Article
Materials Science, Multidisciplinary
J. Olejnicek, A. Hrubantova, L. Volfova, M. Dvorakova, M. Kohout, D. Tvarog, O. Gedeon, H. Wulff, R. Hippler, Z. Hubicka
Summary: Photoactive semiconducting crystalline films of non-stoichiometric tungsten oxides were deposited by DC hollow cathode discharge and analyzed for their potential applications. The layers closest to stoichiometric WO3 and annealed in an argon atmosphere showed the highest photoactivity response.
Article
Materials Science, Coatings & Films
Stephen Muhl, Julio Cruz, Ivan Camps, Angelica Garzon-Fontecha
Summary: Approximately 30 to 40 years ago, the group of Stan Vep.rek at the University of Zurich described the fabrication of silicon thin films using silicon hydride formation and decomposition. They found that exposing silicon to low-pressure hydrogen plasma could promote the formation of volatile silicon hydride, which was then decomposed on a hot substrate to form a silicon film. In another study, the group observed deposition of a metal thin film instead of etching when using a high-density hydrogen plasma to etch quartz. In this paper, they discuss the etching of a water-cooled cylindrical hollow cathode's metal lining by a high-density hydrogen plasma, which results in the thermal decomposition of metal hydride on quartz substrates and the formation of a thin metal film. They also describe a substrate heater to improve experimental reproducibility.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
I. A. Sorokin, D. V. Kolodko
Summary: This article studies a planar hollow cathode discharge (HCD) system with an asymmetric negative potential applied to parallel cathodes. It is found that the hollow cathode effect can be preserved when an additional high voltage bias is applied to one of the cathodes. The performance of the HCD system under different argon pressures was investigated by measuring the current-voltage characteristics of the iron cathode/target. In addition, the iron deposition rate in a sputtering system based on the HCD was studied under different conditions.
Article
Chemistry, Physical
Naveed A. Khan, Behnam Akhavan, Zhong Zheng, Hongwei Liu, Cuifeng Zhou, Haoruo Zhou, Li Chang, Yu Wang, Yanping Liu, Lixian Sun, Marcela M. Bilek, Zongwen Liu
Summary: High entropy alloys (HEAs) are advanced materials with excellent properties, and the fabrication of high entropy oxide (HEO) thin films using radio frequency (RF) reactive magnetron sputtering from a custom-made target with different oxygen flow fractions showed improvements in phase transformation, grain size, and surface roughness. Increasing oxygen flow fraction led to higher oxygen concentration and water contact angle, with the film deposited at the highest oxygen flow fraction of 50% exhibiting the highest values.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Coatings & Films
R. Hippler, M. Cada, P. Ksirova, J. Olejnicek, P. Jiricek, J. Houdkova, H. Wulff, A. Kruth, C. A. Helm, Z. Hubicka
Summary: Cobalt oxide films were deposited using two different magnetron sputtering techniques under different oxygen atmospheres, demonstrating that films produced by HiPIMS process have better performance and lower resistivity. The deposition conditions of magnetron sputtering have a significant impact on the crystal structure and electrical properties of the deposited films.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Mahmoud El-Araby, Moatasem Mostafa Khalefa, Ayan Mukherjee, M. A. Mohaseb, Ahmed A. Aboud
Summary: In this research, cobalt oxide thin films with pure and nickel doping were deposited using spray pyrolysis. Various characterization techniques, including XRD, EDX, XPS, SEM, and optical spectroscopy, were used to analyze the films. The results confirmed the successful doping of nickel and the formation of Co3O4 as the stable phase. The Ni-doped films showed decreased band gap values and exhibited excellent electrochemical properties for potential application in supercapacitor devices.
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
Engineering, Environmental
Youngmoo Jeon, Jeongyeon Lee, Hakrae Jo, Hwichan Hong, Lawrence Yoon Suk Lee, Yuanzhe Piao
Summary: The study successfully synthesized N-doped hollow carbon composite embedded with well-dispersed Co/Co3O4 nanoparticles via the carbonization of a Zn/Co bimetallic metal-organic frameworks/ZnO nanospheres core-shell structure. The sulfur-infiltrated Co/Co3O4-NHC cathode exhibited excellent rate performance and stability, retaining 87.8% of specific capacity after 250 cycles, showing promise for high-performance Li-S batteries. This work provides insights on designing sulfur host materials for next-generation energy storage technology.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Physics, Fluids & Plasmas
Rainer Hippler, Martin Cada, Zdenek Hubicka
Summary: By using a positively biased external ring anode in combination with a hollow cathode discharge or a magnetron sputtering discharge, both with a Ti cathode and with Ar as working gas, the kinetic energy of argon and titanium ions can be enhanced, allowing for effective energy control of plasma ions.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Vitalii Uvarov, Jozef Krutel, Karel Masek, Josef Myslivecek, Viktor Johanek
Summary: The thermal stability of Co3O4 and CeOx-Co3O4 thin films prepared by various dry physical techniques was studied. It was found that the well-ordered model system exhibited higher thermal stability compared to high surface area oxides. The cerium adlayer can serve as a stabilizing component, protecting cobalt oxide from reduction and decomposition in applications using Co3O4.
APPLIED SURFACE SCIENCE
(2022)
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
Materials Science, Ceramics
Naama Sliti, Emile Fourneau, Thomas Ratz, Saad Touihri, Ngoc Duy Nguyen
Summary: This study successfully synthesized magnesium-doped cuprous oxide thin films using radio frequency magnetron sputtering. By varying the argon plasma pressure during deposition, Mg:Cu2O layers with high crystallinity and optimal electrical and optical properties were obtained.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Chatpawee Hom-on, Napat Triroj, Mati Horprathum, Tossaporn Lertvanithphol, Chanunthorn Chananonnawathorn, Sakson Limwichean, Noppadon Nuntawong, Prayoon Songsiriritthigul, Hideki Nakajima, Annop Klamchuen, Papot Jaroenapibal
Summary: Alumina thin films prepared by pulsed DC reactive magnetron sputtering at different operating pressures exhibited hydrolysis reactions in DI water. The corrosion process involved the presence of hydroxide-containing functional groups on the film surfaces, with increasing porosity at higher operating pressures.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Kouame Boko Joel-Igor N'Djore, Moussa Grafoute, Younes Makoudi, Wael Hourani, Christophe Rousselot
Summary: In this study, reactive magnetron sputtering was used to deposit tungsten oxide films on glass and silicon substrates. The Capacitance meter method was proposed to study the electrical properties of resistive WOx films, and a correlation between the deposition process and WOx physico-chemical properties was established. The films were divided into four zones based on the hysteresis of the W-Ar-O-2 system, and the identification of these zones was confirmed by various film properties. The capacitance-voltage curves of the metal-oxide-semiconductor structures showed a gradual evolution with increasing oxygen flow rate, and the ion density and flat band voltage had an inverse relationship with the oxygen flow rate. The Terman method was used to study the WOx-Si interface trap density distribution.
Article
Chemistry, Physical
Xu Cao, Dongling Zhang, Xingwang Cheng, Qian Xu, Leijie Zhang, Luchao Huang, Yi Tu, Xin Yu, Tianfu Zhang, Yongwang Li, Hans Niemantsverdriet, Junfa Zhu
Summary: The combination of noble metals and reducible metal oxides exhibits excellent catalytic properties in low-temperature CO oxidation reactions. This study investigates the adsorption and activation of CO on submonolayer and monolayer CoOx films deposited on Ir(100). The presence of the interface between the submonolayer CoOx film and Ir significantly enhances the catalytic activity of cobalt oxide for CO oxidation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
J. Olejnicek, A. Hrubantova, L. Volfova, M. Dvorakova, M. Kohout, D. Tvarog, O. Gedeon, H. Wulff, R. Hippler, Z. Hubicka
Summary: Photoactive semiconducting crystalline films of non-stoichiometric tungsten oxides were deposited by DC hollow cathode discharge and analyzed for their potential applications. The layers closest to stoichiometric WO3 and annealed in an argon atmosphere showed the highest photoactivity response.
Review
Chemistry, Multidisciplinary
Kolleboyina Jayaramulu, Soumya Mukherjee, Dulce M. Morales, Deepak P. Dubal, Ashok Kumar Nanjundan, Andreas Schneemann, Justus Masa, Stepan Kment, Wolfgang Schuhmann, Michal Otyepka, Radek Zboril, Roland A. Fischer
Summary: The current review provides a critical overview of the growth, structure, and properties of graphene derivatives, MOFs, and their graphene@MOF composites, with a focus on the structure-property-performance relationships. Different synthetic strategies for preparing graphene@MOF composites and tuning their properties are comprehensively reviewed along with their applications in gas storage/separation, water purification, catalysis (organocatalysis, electrocatalysis, and photocatalysis), and electrochemical energy storage and conversion. Challenges in developing graphene@MOF hybrids and their practical applications are discussed, highlighting areas for future research.
Article
Chemistry, Physical
Rambabu Yalavarthi, Olivier Henrotte, Stepan Kment, Alberto Naldoni
Summary: The use of metal composites based on plasmonic nanostructures combined with catalytic counterparts has shown promise in plasmon-enhanced electrocatalysis. This study explores the effect of surface morphology, size, and anchored site of Pd catalysts on plasmonic metasurfaces for formic acid electro-oxidation reaction. The results demonstrate that site-selective deposition of Pd nanoparticles enhances catalytic activity and reduces CO poisoning on the Pd surface.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Materials Science, Coatings & Films
Jiri Vyskocil, Pavel Mares, Zdenek Hubicka, Martin Cada, Tomas Mates
Summary: A new hybrid PVD deposition system combining HiPIMS pulsed glow discharge and pulsed cathodic arc discharge has been developed. The researchers successfully controlled the transition from glow discharge to arc discharge by modifying the power supply. The system was used to deposit ta-C thin films with promising results.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hyo-Jin Ahn, Stepan Kment, Alberto Naldoni, Radek Zboril, Patrik Schmuki
Summary: In this article, a simple ex situ Sn-doping method on hematite nanoflakes (coded as MSnO2-H) is reported, which can protect the nanoflake morphology against high-temperature annealing and activate the photoresponse of hematite up to 800 nm wavelength. SnO2 nanoparticles synthesized on hematite nanoflakes effectively prevent shape deformation and enable heavy Sn ion doping. Moreover, SnO2 nanoparticles act as a passivation layer, reducing the onset potential of hematite for water splitting reactions.
Article
Chemistry, Multidisciplinary
Sourav Rej, S. M. Hossein Hejazi, Zdenek Badura, Giorgio Zoppellaro, Sergu Kalytchuk, Stepan Kment, Paolo Fornasiero, Alberto Naldoni
Summary: This study presents a strategy for preparing and applying titanium dioxide nanosheets for photocatalytic hydrogen (H2) production. It was found that 2D semiconductor nanosheets decorated with single atomic species (SAs) showed high activity under light illumination, successfully forming widely dispersed SAs and exhibiting self-activation and amplification behavior beneficial for enhancing H2 production rate.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Kveta Jiratova, Martin Cada, Iryna Naiko, Alina Ostapenko, Jana Balabanova, Martin Kostejn, Jaroslav Maixner, Timur Babii, Pavel Topka, Karel Soukup, Zdenek Hubicka, Frantisek Kovanda
Summary: Hollow cathode plasma sputtering is a beneficial method for preparing catalysts in the form of thin oxide films on supports, which is especially suitable for catalytic total oxidation of volatile organic compounds (VOCs), offering an economically feasible and environmentally friendly approach to VOC abatement.
Article
Chemistry, Multidisciplinary
Olivier Henrotte, Eva Yazmin Santiago, Artur Movsesyan, Luca Mascaretti, Morteza Afshar, Alessandro Minguzzi, Alberto Vertova, Zhiming M. Wang, Radek Zboril, Stepan Kment, Alexander O. Govorov, Alberto Naldoni
Summary: The investigation of photocatalytic systems at the nanoscale is crucial for understanding their fundamental principles, improving their design, and enhancing their applicability. A photochemical nanoscopy technique has been developed to detect the molecular products of plasmonic hot-carrier-driven photocatalytic reactions with nanometric precision. Applying this methodology to Au/TiO2 plasmonic photocatalysts, it was discovered that smaller and denser Au nanoparticle arrays have lower optical contribution but higher quantum efficiency in hot-hole-driven photocatalysis, which is closely related to population heterogeneity. This study also revealed the areas of oxidation and reduction product evolution in a single plasmonic nanodiode, demonstrating the bipolar behavior of such nanosystems. These findings enable quantitative investigations at the nanoscale to evaluate the photocatalytic reactivity of low-dimensional materials in various chemical reactions.
Article
Physics, Fluids & Plasmas
R. Hippler, M. Cada, A. Mutzke, Z. Hubicka
Summary: The study investigates the relationship between the pulse length and discharge characteristics of a reactive HiPIMS discharge with a tungsten cathode in an argon+oxygen gas mixture. The discharge is operated with pulse lengths varying from 20-500 μs. Measurements of discharge current, optical emission spectroscopy, and energy-resolved ion mass spectrometry were conducted. The results show a significant dependence of discharge current on pulse length, as well as a decrease in ion ratios due to target cleaning. Simulation results reveal the formation of a non-stoichiometric sub-surface compound layer, which depends on the impinging ion composition and pulse length.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Kveta Jiratova, Petr Soukal, Anna Kapran, Timur Babii, Jana Balabanova, Martin Kostejn, Martin Cada, Jaroslav Maixner, Pavel Topka, Zdenek Hubicka, Frantisek Kovanda
Summary: A novel method was studied to prepare Ni-Cu oxide catalysts by deposition on stainless steel meshes using hollow cathode plasma jet sputtering. This method allows the preparation of thin oxide films, making the whole volume of the active phase readily accessible for reactants in catalytic reactions. The activity of the sputtered catalyst was significantly higher in ethanol and toluene oxidation compared to the granular catalyst. This outstanding performance was attributed to the synergistic effect between copper and nickel components.
Article
Chemistry, Physical
Olivier Henrotte, Stepan Kment, Alberto Naldoni
Summary: The impact of surface defects on the photoactivity of plasmonic hybrid nanostructures was investigated using scanning photoelectrochemical microscopy (SPECM). It was found that mild reduction treatment significantly enhances the photoactivity of TiO2 ultrathin films under visible light. Plasmonic photoactivity mapping using Au nanoparticle arrays deposited on different reduced TiO2 films revealed the effect of interfacial defects on hot charge carriers and the role of electron leakage.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Coatings & Films
A. Pisarikova, J. Olejnicek, I. Venkrbcova, L. Nozka, S. Cichon, A. Azinfar, R. Hippler, C. A. Helm, M. Maslan, L. Machala, Z. Hubicka
Summary: In this study, CuFeO2 thin films were prepared using radio frequency reactive sputtering and reactive high-power impulse magnetron sputtering combined with electron cyclotron wave resonance plasma. The films showed promising photocatalytic activity for solar photocatalytic water splitting.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Materials Science, Multidisciplinary
Anna Kapran, Rainer Hippler, Harm Wulff, Jiri Olejnicek, Aneta Pisarikova, Martin Cada, Zdenek Hubicka
Summary: In this experiment, a hollow cathode discharge with a CuNi cathode is used to study the plasma ions in a vacuum chamber with Ar and O2 gases. It is found that Ar+ and O+2 ions are the most abundant species. The deposition rate and heat flux increase with the discharge current, and at high pressures, the directional gas flow further enhances the deposition rate. X-ray diffraction and Raman spectroscopy analysis reveal that the deposited films are composed of a mixed CuxNi1-xO cubic phase with a preferred (111) orientation. Upon annealing, the CuxNi1-xO phase separates into NiO and CuO sub-phases. The annealed films exhibit photoelectrochemical activity as a photocathode, but this activity deteriorates over time due to the reduction of CuO to Cu2O.
Article
Chemistry, Physical
Yu Zhang, Luca Mascaretti, Michele Melchionna, Olivier Henrotte, Stepan Kment, Paolo Fornasiero, Alberto Naldoni
Summary: A fabrication approach was developed to create TiN/F-doped carbon hybrids with high catalytic activity for H2O2 production. These hybrids showed a maximum H2O2 selectivity of 90% and achieved a H2O2 productivity of 207 mmol g(TiN) (-1) h(-1) at 0.2 V vs RHE. The formation of nanocomposites played a key role in achieving high currents, with increased TiO x N y surface content promoting higher H(2)O(2) selectivity and fluorinated nanocarbon imparting good stability to the electrodes due to their superhydrophobic properties.
Article
Nanoscience & Nanotechnology
Morteza Afshar, Andrea Schirato, Luca Mascaretti, S. M. Hossein Hejazi, Mahdi Shahrezaei, Giuseppe Della Valle, Paolo Fornasiero, Stepan Kment, Alessandro Alabastri, Alberto Naldoni
Summary: We report the development of high aspect ratio, nanoporous titanium oxynitride nanotubes with quasi-unitary broadband absorption. The efficient light-heat conversion is explained in terms of localized field distribution and heat dissipation within the nanopores. A numerical model is developed to describe the space-dependent electric permittivity distribution, which can explain the large broadband absorption observed. The potential application of these nanotubes as solar absorbers is explored through photothermal experiments.
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)
