Article
Chemistry, Physical
Kavita Sahu, Aditi Bisht, Alapan Dutta, Tapobrata Som, Satyabrata Mohapatra
Summary: Plasmonic nanocomposite thin films of Au-Cu2O-CuO were fabricated by RF magnetron co-sputtering and thoroughly analyzed by various techniques. The nanocomposite thin film showed excellent photocatalytic performance for organic pollutants degradation and significant catalytic activity for 4-NP transformation. The presence of Au nanoparticles in the Cu2O-CuO thin film improved charge separation and transport, enhancing the catalytic and photocatalytic features of the nanocomposite.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Hyun Min Kim, Jong Hoon Lee, Ahram Yom, Han Sol Lee, Dong Geun Kim, Dong Wan Ko, Hong Seung Kim, Ji-Hoon Ahn
Summary: SrRuO3 thin films have the potential for use as electrode layers, with key parameters such as oxygen flow ratio and post-deposition conditions needing to be carefully controlled for high-quality films to be deposited on SiO2 substrates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Khan Alam, Mohammad B. Haider, Mohammad F. Al-Kuhaili, Khalil A. Ziq, Bakhtiar Ul Haq
Summary: Chromium nitride thin films were prepared by reactive radio frequency magnetron sputtering, and their properties were studied in relation to the nitrogen to argon flow rate ratio and film composition. The results show that the film composition, band gap, and electronic phase transition are influenced by the gas flow ratio and film composition.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Masami Aono, Masami Terauchi, Kyoji Morita, Tasuku Inoue, Kazuhiro Kanda, Ken Yonezawa
Summary: In this study, a-CNx thin films were deposited through RF magnetron sputtering with increasing nitrogen gas pressure to provide nitrogen radicals at high concentrations. The films' chemical bonding structures were evaluated using XPS, SXES, and NEXAFS, and compared with films deposited under uniform gas pressure. Increasing the gas pressure around the graphite target slightly increased the deposition rate and changed the chemical bonding structure of a-CNx films. However, the nitrogen content did not increase with the nitrogen gas pressure. The nitrogen incorporation in a-CNx films was more effective at higher RF powers, as indicated by SXES and NEXAFS spectra.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Justin Ryan Phelps, Ashwin Kumar Saikumar, Reza Abdolvand, Kalpathy B. B. Sundaram
Summary: This study reports the material properties of gallium-doped zinc oxide grown from a high impulse magnetron sputtering system (HiPIMS) and compares them to those of radio frequency (RF) sputtering deposition. The results show that HiPIMS and RF processes yield similar outcomes under the same average power conditions. RF depositions exhibit slightly higher band gap and deposition rate, as well as lower resistivity and optical absorption coefficient. Both methods show that band gaps and grain size increase with deposition power.
Article
Materials Science, Multidisciplinary
S. S. Oladijo, F. M. Mwema, T. C. Jen, Kipkurui Ronoh, Dinara Sobola, E. T. Akinlabi
Summary: The study investigates the surface morphology and characteristics of CrCoCuFeNi high entropy alloy thin films at different deposition times, substrate temperatures, and RF powers. Fractal characteristics of the films are observed, with average surface roughness and interface width decreasing with time while increasing with RF power.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Giovanni Morello, Stefania Milanese, Maria Luisa De Giorgi, Nicola Calisi, Stefano Caporali, Francesco Biccari, Naomi Falsini, Anna Vinattieri, Marco Anni
Summary: Halide perovskites are recognized as real contenders for the next generation of optoelectronic devices due to their high optical efficiency, low-cost fabrication, and wide variety in composition and bandgap. This study reports the amplified spontaneous emission (ASE) properties of CsPbBr3 films obtained through RF-magnetron sputtering. The films exhibited ASE over a broad temperature range, with the best performance occurring at around 50 K. The results indicate the potential for large-area, high-quality perovskite thin films for optoelectronic applications.
Article
Materials Science, Multidisciplinary
Giji Skaria, Ashwin Kumar Saikumar, Akshaya D. Shivprasad, Kalpathy B. Sundaram
Summary: Copper indium oxide thin films were deposited using RF magnetron sputtering and annealed at various temperatures, leading to increased grain size and crystallinity. The films exhibited high optical transmission and a small bandgap change during annealing.
Article
Chemistry, Multidisciplinary
Zhenxue Zhang, Mikdat Gurtaran, Xiaoying Li, Hio-Ieng Un, Yi Qin, Hanshan Dong
Summary: In this study, N-type and P-type BiTe-based thin films were deposited on silicon, glass, and Kapton HN polyimide foil using magnetron sputtering technique. The morphology, microstructure, and phase constituents of the thin films were characterized by SEM/EDX, XRD, and TEM. The electrical conductivity, thermal conductivity, and Seebeck coefficient were measured by an advanced in-plane test system. The power output (open-circuit voltage and electric current) of the thin films was measured at different temperature gradients using a custom-built apparatus. The impact of deposition parameters and the dimensions of the thin films on the power output were investigated to optimize the thin-film flexible TE device for thermal energy harvesting.
Article
Chemistry, Physical
Amal Das, Martando Rath, Deleep R. Nair, M. S. Ramachandra Rao, Amitava DasGupta
Summary: Aluminum Nitride (AlN) films with preferential (100) orientation were successfully fabricated on Molybdenum (Mo) coated Silicon substrate, showing good crystallinity and bonding between Al and N. These films have great potential for high frequency resonator and energy harvesting applications due to their excellent properties.
APPLIED SURFACE SCIENCE
(2021)
Article
Physics, Multidisciplinary
Devendra Kumar, Chiranji Lal, Dharm Veer, Deshraj Singh, Pawan Kumar, Ram S. Katiyar
Summary: CdSe and CdSe:Te thin films were grown on glass substrates by RF magnetron sputtering. The doping percentage of Tellurium (Te) in CdSe was 7% for the CdSe:Te thin film. The microscopic images of the films were found to be uniform and homogeneous in nature with a uniform grain and no cracks, and the grain size of CdSe was higher than CdSe:Te thin film. CdSe:Te thin film shows a higher absorption coefficient compared to CdSe in the visible region. The Energy band gaps were found to be 2.01 and 1.73 eV for CdSe and CdSe:Te thin films, respectively. The incorporation of Te atom into the CdSe structure has enhanced the mobility and changed the type of conductivity from n-type to p-type.
Article
Engineering, Electrical & Electronic
Chunhu Zhao, Junfeng Liu, Yixin Guo, Yanlin Pan, Xiaobo Hu, Guoen Weng, Jiahua Tao, Jinchun Jiang, Shaoqiang Chen, Pingxiong Yang, Junhao Chu
Summary: The study optimized aluminum doped ZnO thin films using RF magnetron sputtering, achieving high-quality optical and electrical properties. The optimized films demonstrated excellent optical and electrical characteristics at low resistivity, making them suitable as front contact layers in solar cell applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Geon-Hyeong Kang, Ki Chul Jung, Jongbum Kim, JoonHyun Kang, In Soo Kim, Young-Hwan Kim
Summary: In this study, high-quality KTa1-xNbxO3 thin films were grown using multi-target RF magnetron co-sputtering. The films exhibited a ferroelectric phase at room temperature with a Curie temperature of around 403 K, and their optical constants were similar to those of single crystals. This research provides a simple method for fabricating high-quality perovskite KTN thin films with desired properties.
Article
Chemistry, Physical
D. A. Granada-Ramirez, A. Pulzara-Mora, C. A. Pulzara-Mora, A. Pardo-Sierra, A. Cardona-Bedoya, M. Perez-Gonzalez, S. A. Tomas, S. Gallardo-Hernandez, J. G. Mendoza-Alvarez
Summary: InGaN thin films were deposited on silicon substrates using RF magnetron sputtering, and the In content was controlled by adjusting the substrate temperature. The optical and structural properties of the films were analyzed, and it was found that the band gap energy increased with temperature.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Kaushlendra Pandey, Bhaskar Chandra Mohanty
Summary: A rational strategy for phase-pure kesterite CZTS film deposition using RF magnetron sputtering with a thin Cu interlayer was demonstrated to suppress the growth of secondary phases. The films showed excellent photoresponse with a bandgap of 1.58 eV, making them suitable for potential use in thin film solar cells.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Hudson Miranda, Vitor Monken, Joao Luiz E. Campos, Thiago L. Vasconcelos, Cassiano Rabelo, Braulio S. Archanjo, Clara M. Almeida, Sebastian Grieger, Claudia Backes, Ado Jorio, Luiz Gustavo Cancado
Summary: TERS experiments reveal the optical field generated by a nanoplasmonic probe. The TERS intensity profile of nano-objects smaller than the probe's apex resembles a donut shape, similar to the field generated by a point-dipole source, and can be well described by the Dyadic Green's function. By having prior knowledge on the excitation field generated by the TERS probe, the width of shear solitons caused by lattice reconstruction in low-angle twisted bilayer graphene, a prominent platform for twistronics, and the extent of defect-induced light emission from graphene edges can be measured.
Article
Chemistry, Physical
Douglas Rocha, Jessica Luzardo, Daniele Aguiar, Sanair Massafra, Rogerio Valaski, Alexander Silva, Erlon Ferreira, Renata Simao, Braulio Archanjo, Alexei Kuznetsov, Joyce Araujo
Summary: A new approach to synthesize lignin-derived nanocarbon crystals based on lignin depolymerization is proposed in this study. The chemical structure of lignin was modified using a controlled routine involving UV light irradiation, hydrothermal carbonization, vacuum degassing, pyrolysis, and mechanical exfoliation. This method resulted in a lignin-based nanocarbon with a nanoporous framework structure and oxygenated functional groups. The catalyst-free route used in this study showed high nanocarbon yields and is an eco-friendly strategy for synthesizing low-cost carbon materials. The characterization of the lignin-derived nanocarbon included X-ray diffraction, infrared, Raman, and X-ray photoelectron spectroscopies, as well as scanning and transmission electron microscopy. The developed transformation method has the potential to provide large amounts of carbon-based materials for industrial applications, and it can be adapted to various biomass feedstocks with suitable aromatic groups for high yield polycondensation. The achieved nano-carbon yield ranged from 50 wt% to 70 wt% when starting from a commercial purified lignin.
Article
Electrochemistry
Yeshy F. Ascencio-Flores, Saira M. Carhuayal-Alvarez, Ulises Quiroz-Aguinaga, Sandy L. Calderon-Zavaleta, Elvis O. Lopez, Miguel Ponce-Vargas, Andy A. Cardenas-Riojas, Angelica M. Baena-Moncada
Summary: An electrochemical sensor based on carbon nanofibers (CNF) modified with silver nanoparticles (AgNP) was developed for simultaneous detection of sunset yellow (SY) and tartrazine (Tz) food dyes. The sensor exhibited excellent selectivity, reproducibility, and stability in the presence of various interferents. The simultaneous detection of SY and Tz was achieved by square wave voltammetry (SWV) and cyclic voltammetry (CV), with nanomolar sensitivity and a wide linear range. The sensor's performance was validated by UV-visible spectrophotometry.
ELECTROCHIMICA ACTA
(2023)
Article
Food Science & Technology
Fabio Silvestre Bazilio, Lisia Maria Gobbo dos Santos, Cristiane Barata Silva, Santos Alves Vicentini Neto, Carlos Alberto Senna, Braulio Soares Archanjo, Silvana do Couto Jacob, Shirley de Mello Pereira Abrantes
Summary: This study investigated the antimicrobial function of five materials with added silver, evaluating the total silver concentration and migration of silver nanoparticles in contact with food. Migration testing was conducted by contacting plastic material with food simulant. Mass spectrometry with inductively coupled plasma was used to determine migration concentrations and average silver particle sizes. The study found detectable total silver concentrations and migration of silver nanoparticles in all samples, with concentrations ranging from 0.00433 to 1.35 ng kg(-1). The presence of silver nanoparticles in all food simulants, with sizes below 95 nm, was confirmed by the migration study. Scanning electron microscopy and energy-dispersive X-ray spectroscopy further revealed the presence of spherical silver nanoparticles, ranging in size from 17 to 80 nm. These findings are important for health risk assessments and food safety regulation regarding materials with antimicrobial properties.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2023)
Article
Chemistry, Inorganic & Nuclear
Juan Francisco Garcia-Valencia, Nathalia La Salvia, Andre Linhares Rossi, Jean-Guillaume Eon
Summary: This study investigates the oxidative dehydrogenation of ethane using mixed molybdenum vanadium and tungsten oxides. The prepared oxides exhibit stability and selectivity in the reaction process.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Gabriela de Souza Castro, Wanderson de Souza, Thais Suelen Mello Lima, Danielle Cabral Bonfim, Jacques Werckmann, Braulio Soares Archanjo, Jose Mauro Granjeiro, Ana Rosa Ribeiro, Sara Gemini-Piperni
Summary: This study compares the effects of different concentrations of TiO2 NPs on the differentiation and mineralized matrix production of human osteoblasts in a monolayer or 3D model. The internalization of nanoparticles and their impact on cell morphology are evaluated. The results demonstrate a dose-dependent increase in mineralized matrix in both the monolayer and 3D models, with higher levels observed in the 3D model after high exposure to TiO2 NPs, suggesting its potential as a model for testing the effect on bone osteointegration.
Article
Chemistry, Physical
Mauricio A. Melo, Igor M. Brito, Joao V. S. B. Mello, Pamela S. M. Rocha, Isabela A. A. Bessa, Braulio S. Archanjo, Fabio S. Miranda, Ricardo J. Cassella, Celia M. Ronconi
Summary: Producing solar fuels through semiconductor-based photocatalytic water splitting is a promising solution for global adoption of renewable energy sources. This study introduces a simple method for preparing nanostructured hematite and niobium-doped hematite nanoparticles, which can be assembled into thin films for use as photoanodes in photoelectrochemical cells. The optimization of film composition and thickness significantly improves the photocurrent and enhances the efficiency of water splitting, making these materials more economically competitive.
Article
Materials Science, Multidisciplinary
Jessica Nogueira da Cunha, Brenno Danho Veras Evangelista, Amanda Vieira Xavier, Talis Uelisson da Silva, Sanair Massafra de Oliveira, Joyce Rodrigues de Araujo, Braulio Soares Archanjo, Sergio de Paula Machado, Michelle Jakeline Cunha Rezende, Tatiana das Chagas Almeida, Oscar Rosa Mattos, Eliane 'Elia
Summary: The anticorrosive activity of furfural derivatives on mild steel immersed in CO2-saturated formation water solution was evaluated. Furfural thio-semicarbazone showed high inhibition efficiency of 90.2% for 72 hours of immersion. In-situ synthesis of the same molecule in the corrosive medium also demonstrated good efficiency of 82.2% for 24 hours of immersion, but it decreased over time due to incomplete conversion of the precursors.
Article
Environmental Sciences
Cassiano Augusto Rolim Bernardino, Claudio Fernando Mahler, Julia Oliveira Fernandes, Claudio Sabbatini Capella Lopes, Bernardo Ferreira Braz, Braulio Soares Archanjo, Ricardo Erthal Santelli, Fernando Henrique Cincotto
Summary: The study aimed to evaluate the adsorption levels of PET microplastic when exposed to high amounts of Ni, Cu, and Co. The results showed that the surface area, presence of pores, and functional groups influenced the adsorption of metals on the surface of PET microplastic. The Langmuir isotherm and pseudo-second order models adequately described the adsorption of metals by the PET microplastic, indicating a predominantly chemical and fast adsorption process.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Electrochemistry
Andy A. Cardenas-Riojas, Sandy L. Calderon-Zavaleta, Ulises Quiroz-Aguinaga, Elvis O. Lopez, Miguel Ponce-Vargas, Angelica M. Baena-Moncada
Summary: An electrochemical sensor based on a carbon paste electrode (CPE) with gold nanoparticles (AuNP) anchored in carbon nanofibers (CNF) was developed for the detection of tartrazine (Tz). The sensor exhibited excellent sensibility, selectivity, and stability in the presence of various interferents commonly found in commercial soft drinks. A computational study suggested that noncovalent interactions contributed to the stabilization of the Tz-AuNP assemblies. This sensor offers a promising option for analytical purposes.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Geochemistry & Geophysics
Camila Wendt, Andre L. Rossi, Jefferson Cypriano, Cleo Dilnei de Castro Oliveira, Corinne Arrouvel, Jacques Werckmann, Marcos Farina
Summary: In this study, the structure of the spicules of Caudofoveatan mollusks Falcidens sp. was revealed and characterized using various imaging and analytical methods. This included the use of electron microscopy techniques, as well as physicochemical analysis. The wavy appearance of the spicules' dorsal surface was observed using atomic force microscopy. The findings support the use of Caudofoveata spicules as a model for biomineralization studies.
Article
Chemistry, Physical
Amra A. Alhassni, Jorlandio F. Felix, John Fredy R. Marroquin, Sultan Alhassan, Haifa Alghamdi, Amjad Almunyif, Walter M. de Azevedo, Juliana Lunz, Braulio S. Archanjo, Mohamed Henini
Summary: This work investigated the effect of gamma radiation on the structural and optical properties of diluted GaAs1_xBix epitaxial layers with different Bismuth contents. XRD, Raman spectroscopy, and photoluminescence measurements were used to examine the influence of radiation. The results showed that gamma radiation affected the optical properties of GaAs1_xBix epitaxial layers, leading to an increase in hole concentration and improvement in optical performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Physics, Applied
V. M. Andrade, N. R. Checca, V. G. de Paula, K. R. Pirota, A. L. Rossi, F. Garcia, A. Vovk, S. A. Bunyaev, G. N. Kakazei
Summary: In this study, Fe2CrAl Heusler nanoparticles with good crystallographic features were obtained using pulsed laser deposition technique. The structural, morphological, and magnetic properties of these nanoparticles were investigated, revealing slightly off-stoichiometric grains with two distinct morphologies. The magnetic behavior was found to be influenced by chemical disorder and inhomogeneity. The nanoparticles exhibited a superparamagnetic behavior and a Gilbert damping comparable to standard materials used in magnonics applications. The complex magnetostructural coupling in the nanoparticle system was discussed in comparison with the stoichiometric Fe2CrAl bulk target behavior.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Multidisciplinary
Astrid Ali, Rubem Caetano, Jade Barreto, Guilherme Felix, Braulio Soares Archanjo, C. A. Achete, Fernando Stavale, Emilia Annese
Summary: In this study, MnO thin films grown on Cu(111) were investigated using various characterization techniques. The formation of oxidized Cu region at the interface and the influence of the Cu substrate on the properties of the MnO films were revealed through spectroscopic analysis.
Article
Materials Science, Multidisciplinary
Alisson S. Thill, Dirleia S. Lima, Oscar W. Perez-Lopez, Robinson L. Manfro, Mariana M. V. M. Souza, Daniel L. Baptista, Braulio S. Archanjo, Fernanda Poletto, Fabiano Bernardi
Summary: This study reports on the non-complex synthesis of NiO nanofoams and their use for hydrogen storage applications. The results show an improved hydrogen storage capacity at room temperature and ambient pressure compared to Ni-based systems in the literature. DFT calculations suggest a quasi-molecular bonding of the H-2 molecule at the surface of the NiO nanofoams. These findings open new possibilities for the design of future smart materials for hydrogen storage applications and other fields.
MATERIALS ADVANCES
(2023)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)