Article
Energy & Fuels
Tomas Tamulevicius, Paulius Laurikenas, Mindaugas Juodenas, Rasa Mardosaite, Brigita Abakeviciene, Carlos Javier Pereyra, Simas Rackauskas
Summary: This article presents a scalable method to prepare antireflection coatings from size-sorted ZnO nanowires, which can reduce the optical losses in photovoltaic panels. The experimental results show that the ZnO NW coatings can increase transmittance, decrease reflectance, and improve the short circuit current of PV modules. The reflectance and other optical properties of the coatings can be tuned by varying the length, diameter, and orientation of the nanowires.
Article
Materials Science, Multidisciplinary
Xin Guo, Xiangqian Quan, Zizheng Li, Qiang Li, Binzhi Zhang, Xin Zhang, Chi Song
Summary: A hybrid-structured, anti-reflection coating was developed in this study, combining multi-layer thin films with a single top-oblique deposited layer to enhance photocurrent generation of photovoltaic modules and visibility in optical devices. By introducing a low-refractive index layer, the broadband anti-reflection properties of optical thin films can be improved while simplifying preparation methods.
Article
Materials Science, Ceramics
Ik-Soo Kim, Myung-Yeon Cho, Yohan Jeong, Yun-Cheol Shin, Dong-Won Lee, Chulhwan Park, Sang-Mo Koo, Weon Ho Shin, Won-Jik Yang, Yeol Park, Hiesang Sohn, Jong-Min Oh
Summary: The study demonstrated the successful fabrication of transparent and opaque hydrophobic alumina/polytetrafluoroethylene composite layers using aerosol deposition process, which not only applied to architectural windows, but also exhibited high transmittance and excellent hydrophobic properties.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Munem Ali, Jacob John Mitchell, Gregory Burwell, Klaudia Rejnhard, Cerys Anne Jenkins, Ehsaneh Daghigh Ahmadi, Sanjiv Sharma, Owen James Guy
Summary: The study focuses on creating a dielectric passivation film using molecular vapor deposition technology to protect graphene-based biosensing devices from harsh chemicals. By utilizing the reported healing effect of Al2O3 on graphene, the researchers aim to reduce photoresist residue and graphene defects for improved device homogeneity. This results in more reliable and homogeneous graphene devices that can be fabricated at wafer-scale for sensing and biosensing applications.
Article
Energy & Fuels
Xinyu Wang, Kun Gao, Dacheng Xu, Kun Li, Chunfang Xing, Xinliang Lou, Zhaojun Su, Xinbo Yang
Summary: Surface passivation is improved by using a boron oxide/aluminum oxide stack (BOx/Al2O3) on c-Si surfaces. The BOx/Al2O3 stacks show superior passivation quality compared to Al2O3 single layers after annealing. The optimized BOx/Al2O3 passivation stack achieves very low dark current densities on n-type and p-type Cz wafers, as well as boron-doped p+ emitters.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Multidisciplinary
Honglei Wang, Jun Shi, Jingyu Zhang, Zhehao Tao, Hongguang Wang, Qingqing Yang, Peter A. van Aken, Runfeng Chen
Summary: This study presents a facile and green method for preparing few-layer MoS2 nanosheets and nanocomposites, and demonstrates their potential in high-performance memory devices. The findings reveal the charge trapping and detrapping behaviors of the 2D MoS2-based nanocomposites.
Article
Chemistry, Physical
Adelaide M. Nolan, Darshana Wickramaratne, Noam Bernstein, Yifei Mo, Michelle D. Johannes
Summary: The study investigates the effects of Al2O3 coatings on lithium-ion battery materials, revealing a correlation between the proximity of Li+ to Al3+ and the Li+ migration barrier, as well as the enhancement of Li+ movement in Al-deficient materials.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Naftali Kanovsky, Shlomo Margel
Summary: This study proposes a technique for preparing antifogging coatings through an in situ coating process. The coating exhibits excellent antifogging properties, stability, and durability, making it suitable for a wide range of applications in fields such as plastic packaging, agricultural films, and optical devices.
Article
Chemistry, Physical
Raghavendra Sagar, Asha Rao
Summary: This paper demonstrates that deposition of nanoscale TiO2 and Ta2O5 as antireflection coatings on commercial monocrystalline silicon solar cells can significantly enhance the photon to electron conversion efficiency, mainly attributed to the increase in fill factor.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
Jiarui Gong, Zheyang Zheng, Daniel Vincent, Jie Zhou, Jisoo Kim, Donghyeok Kim, Tien Khee Ng, Boon S. S. Ooi, Kevin J. J. Chen, Zhenqiang Ma
Summary: Ultrathin oxides and ultrathin nitrides play a crucial role in lattice-mismatched semiconductor heterostructures formed by semiconducting grafting approach. Available by atomic layer deposition, these dielectrics satisfy the surface passivation and quantum tunneling requirements for semiconductor grafting. Understanding the band parameters between ultrathin oxides or nitrides and GaN can guide the selection of interfacial dielectrics for grafted GaN-based devices.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Christian J. Ruud, Angela Cleri, Jon-Paul Maria, Noel C. Giebink
Summary: This study introduces a sputtering-based sacrificial porogen process to fabricate multilayer nanoporous SiO2 coatings with tunable refractive index. The results demonstrate outstanding performance in antireflection coatings.
Article
Chemistry, Multidisciplinary
Elise R. Ostli, Yonas Tesfamhret, Sigurd Wenner, Matthew J. Lacey, Daniel Brandell, Ann Mari Svensson, Sverre M. Selbach, Nils P. Wagner
Summary: The study demonstrates that even a 1 nm thick Al2O3 coating is detrimental to the cycling performance of LNMO. Complete coverage of LNMO particles by the coating may lead to high overpotentials and reduced reversible capacity. The Al2O3 coating does not provide long-term protection from HF attack, as indicated by severe signs of pitting dissolution in Al2O3-coated LNMO particles.
Article
Nanoscience & Nanotechnology
Mari Napari, Tahmida N. Huq, David J. Meeth, Mikko J. Heikkil, Kham M. Niang, Han Wang, Tomi Iivonen, Haiyan Wang, Markku Leskela, Mikko Ritala, Andrew J. Flewitt, Robert L. Z. Hoye, Judith L. MacManus-Driscoll
Summary: High-performance p-type oxide thin film transistors (TFTs) have great potential for semiconductor applications, but often suffer from low hole mobility and high off-state currents. By applying a thin ALD Al2O3 passivation layer on the Cu2O channel and vacuum annealing, the TFT switching characteristics can be improved. Characterization by TEM-EDX and XPS shows that Al2O3 deposition on Cu2O reduces surface and forms a CuAlO2 interfacial layer. This, along with field-effect passivation, leads to improved TFT performance by reducing trap states and electron accumulation in the off-state.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Coatings & Films
Luciana Mendes Ribeiro de Sousa, Moises das Virgens Santana, Bruno Pereira da Silva, Thays Oliveira Marques, Ramon Pena-Garcia, Angel Alberto Hidalgo, Maria Leticia Vega, Bartolomeu Cruz Viana, Thiago Domingues Stocco, Luana Marotta Reis de Vasconcellos, William Chiappim, Rodrigo Savio Pessoa, Fernanda Roberta Marciano, Anderson Oliveira Lobo
Summary: By using Atomic Layer Deposition (ALD) and simulated body fluid method, Ti6Al7Nb alloy was modified with Al2O3 and coated with apatite. Various techniques including X-Ray Fluorescence (FRX), Energy Scattering X-Ray Spectroscopy (EDS), Scanning Electron Microscopy (SEM), X-Ray Diffraction Spectroscopy (XRD), Raman Spectroscopy, and Atomic Force Microscopy (AFM) were used to determine the chemical and crystallographic composition of Ti6Al7Nb before and after surface modifications. The results showed that the surface modifications improved the bioactivity of the titanium alloy by promoting the formation of microporosity and influencing the nucleation of apatite at the nanoscale. These nanofilms were found to be non-cytotoxic, making them promising for tissue engineering applications.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Optics
Su-Hui Lin, Ming-Chun Tseng, Ray-Hua Horng, Shouqiang Lai, Kang-Wei Peng, Meng-Chun Shen, Dong-Sing Wuu, Shui-Yang Lien, Hao-Chung Kuo, Zhong Chen, Tingzhu Wu
Summary: This study utilized thin p-GaN, ITO, and RPL to improve the performance of DUV-LEDs, resulting in increased WPE and LEE. DUV-LEDs with RPL exhibited lower junction temperature compared to Ref-LED under high injection currents.
Article
Engineering, Electrical & Electronic
Qi-Zhen Chen, Chun-Yan Shi, Ming-Jie Zhao, Peng Gao, Wan-Yu Wu, Dong-Sing Wuu, Ray-Hua Horng, Shui-Yang Lien, Wen-Zhang Zhu
Summary: This study investigates the transparent indium-gallium-zinc oxide thin film transistor (IGZO-TFT) prepared by all plasma enhanced atomic layer deposition (PEALD). The properties of the IGZO film and IGZO-TFT based on different In2O3 cycle ratios are examined due to the considerable impact of chemical composition on the performance of IGZO TFTs. The IGZO film prepared by PEALD exhibits amorphous state with excellent conformity and uniformity. By applying a-IGZO films with different In2O3 cycle ratios, a satisfactory electrical performance of the transistor is achieved, with a threshold voltage (V-th) of 1.7 V, a saturation mobility (mu(sat)) of 8.8 cm(2)/Vs, a subthreshold swing (SS) of 0.2 V/decade, and an I-ON/I-OFF of 2.2 x 10(8). This work provides a new approach for achieving transparent TFTs that are more suitable for practical commercial applications.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Ming-Hsien Li, Keng-Tien Liang, Ze-Hao Wu, Sang-Hao Lin, Yi-Shiang Chiu, Chang-Hsueh Lee, Ming-Yu Kuo, Chia-Feng Lin, Hsiang Chen, Dong-Sing Wuu, Jung Han
Summary: ZnO/ZnS/BIQ-TIPs nanostructures were fabricated for light/gas dual sensing application. The synergic effects of ZnS shell and organic BIQ-TIPs materials enhanced the photosensing capability of ZnO NRs, and the ZnS shell further extended the photosensing spectrum. In addition, the light-assisted hydrogen gas sensing capability was boosted by the incorporation of ZnS shell and BIQ-TIPs materials.
IEEE SENSORS JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Shicong Jiang, Wan-Yu Wu, Fangbin Ren, Chia-Hsun Hsu, Xiaoying Zhang, Peng Gao, Dong-Sing Wuu, Chien-Jung Huang, Shui-Yang Lien, Wenzhang Zhu
Summary: The application of (In, Al, Ga)N materials in photovoltaic devices has attracted much attention. However, to deposit high-quality GaN material as a foundation is essential. Plasma-enhanced atomic layer deposition (PEALD) combines the advantages of ALD process with plasma utilization and has been used to deposit thin films with various requirements. In this study, NH3-containing plasma was used to eliminate the residual oxygen during the growth of GaN films, which significantly improved the quality of the films. The plasma power controlled NH2, NH, and H radicals showed strong influence on the oxygen content, growth rate, crystallinity, and surface roughness of the GaN films.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Optics
Kang-Wei Peng, Ming-Chun Tseng, Su-Hui Lin, Shaoqiang Lai, Meng-Chun Shen, Dong-Sing Wu, Ray-Hua Horng, Zhong Chen, Tingzhu Wu
Summary: This study investigates deep-ultraviolet light-emitting diodes (DUV LEDs) with different chip sidewall geometries (CSGs). By comparing the characteristics of these LEDs, it is clearly demonstrated that inclined sidewalls provide more possible pathways for photons to increase the light extraction efficiency (LEE) of LEDs. Therefore, DUV LEDs with the CSGs exhibit improved performance.
Article
Engineering, Electrical & Electronic
Chung-Jen Ou, Kai-Ping Chang, Ming-Wei Tasi, Chien-Chih Chen, Yu-Min Chen, Chih-Wei Lo, Dong-Sing Wuu
Summary: This study accurately identifies the major factors associated with manufactured structures and photon emission intensity distribution, and presents a methodology for pixel-level optical simulations. The study reveals the optical effects of each layer in micro-LED design and explores the principal factors for parameter design using a design of experiments method. The specific design factors identified can be used for cost control and performance improvement.
IEEE PHOTONICS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Xiao-Ying Zhang, Jing Han, Duan-Chen Peng, Yu-Jiao Ruan, Wan-Yu Wu, Dong-Sing Wuu, Chien-Jung Huang, Shui-Yang Lien, Wen-Zhang Zhu
Summary: In this study, HfO2 thin films were prepared on silicon using plasma enhanced atomic layer deposition (PEALD) and the effects of substrate temperature on their structure, morphology, and electrical properties were investigated.
Article
Crystallography
Chao-Chun Yen, Anoop Kumar Singh, Yi-Min Chung, Hsin-Yu Chou, Dong-Sing Wuu
Summary: This paper highlights the effects of furnace pressure, crucible rotation, and pulling rate on interstitial oxygen (O-i) concentrations and micro-defects during growth in a Czochralski single-crystal silicon (CZ-Si) growth furnace. Different set-points of furnace pressure and crucible rotation were controlled to achieve different degrees of O-i, which was found to have a positive correlation with furnace pressure and crucible rotation. The influence of different pulling rates on the formation of micro-defects was also investigated, with the transformation from liquid to solid being responsible for their generation. The study concludes that growth using a CZ-Si growth furnace should be carried out with low furnace pressure, low crucible rotation, and low pulling rate to reduce micro-defects.
Article
Chemistry, Physical
Hsin-Yu Chou, Chih-Wei Lo, Kai-Ping Chang, Wei-Yi Shi, Chao-Chun Yen, Dong-Sing Wuu
Summary: Cadmium-free perovskite quantum dots (QDs) with a new structure of CsPbBr3/Cs4PbBr6 were synthesized using a chemical solution method. The perovskite QDs were passivated with a SiO2 layer and dispersed in a polar solvent to maintain their luminous properties. A photolithography process was used to fabricate pixelated perovskite QDs on a glass substrate, and a black matrix was employed to reduce crosstalk between pixels. Applying these pixelated perovskite QDs as a color conversion layer in blue light micro-LED display, excess blue light was reflected back to the QDs using a 23-layer distributed Bragg reflector (DBR), resulting in increased luminous intensity of green light and decreased transmittance of blue light. Ultimately, the attachment of graph pixelated perovskite QDs to the blue light display enabled monochrome/area color and full-color micro-LED display.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Kai-Ping Chang, Yu-Wun Chien, Po-Hsiang Wang, Chao-Chun Yen, Ying-Xiang Lin, Ying-Jie Gao, Wan-Yu Wu, Dong-Sing Wuu
Summary: In this study, a blue transparent micro-LED display with a chip size of 20 μm × 20 μm, a pixel density of 152 PPI, a pixel spacing of 150 μm, and a resolution of 64 × 32 has been successfully fabricated. ITO/Ag/ITO transparent layers were deposited by high-power impulse magnetron sputtering. The electrical properties of the indium tin oxide (ITO) layers were analyzed using sheet resistance, while surface morphology was examined using scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. The results show that the ITO/Ag/ITO structure with 20 nm thick Ag has a lower sheet resistance (3.36 Cl/sq) and sufficient visible light transmittance (80.45%). The visible light transmittance of the ITO/Ag/ITO layers increased to 86% after rapid thermal annealing. Furthermore, surface roughness was minimized and sheet resistance was further reduced, resulting in ohmic contact on n-GaN for transparent micro-LED display applications.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Anoop Kumar Singh, Chao-Chun Yen, Chun-Fan Wen, Ray-Hua Horng, Dong-Sing Wuu
Summary: Researchers have developed a NO gas sensor with high sensing response for measuring NO gas levels. The sensor is made of ZnO:ZnGa2O4 dual-phase films and exhibits high selectivity and quick response time.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Ting -Yu Chang, Anoop Kumar Singh, Jhih-Hong Shao, Chiung-Yi Huang, Jia-Min Shieh, Dong-Sing Wuu, Po-Liang Liu, Ray-Hua Horng
Summary: Gas sensors play a crucial role in various industrial and environmental monitoring applications. This study investigates the impact of plasma surface treatment on the performance of ZnGa2O4-based NO gas sensors, and the results show that Ar plasma treatment significantly improves the sensor's response. These findings provide valuable insights into enhancing the performance of gas sensors through surface modification techniques.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Zhi-Xuan Zhang, Shi-Cong Jiang, Wan-Yu Wu, Peng Gao, Linqin Jiang, Yu Qiu, Dong-Sing Wuu, Feng-Min Lai, Wen-Zhang Zhu, Lien SY
Summary: In this paper, Si derived from the SiNx sub-cycle in plasma-enhanced atomic layer deposition (PEALD) was used as a dopant to improve the ohmic contact resistance of GaN. The highest carrier concentration and lowest resistivity were achieved in a Si-doped GaN film deposited at a SiNx sub-cycle ratio of 20%.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Chun-Yan Shi, Qi-Zhen Chen, Zhi-Xuan Zhang, Chia-Hsun Hsu, Ming-Jie Zhao, Xiao-Ying Zhang, Peng Gao, Wan-Yu Wu, Dong-Sing Wuu, Chien-Jung Huang, Shui-Yang Lien, Wen-Zhang Zhu
Summary: In this study, indium-free GZO thin films were successfully deposited using plasma-enhanced atomic layer deposition (PEALD) and used as the channel layer in thin film transistors (TFTs). Modifying the cycle ratio of Ga2O3 to ZnO can affect the film properties, with the 7.5% cycle ratio GZO film showing low carrier concentration and high Hall mobility.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Chia-Hsun Hsu, Zhi-Xuan Zhang, Chun-Yan Shi, Pao-Hsun Huang, Wan-Yu Wu, Dong-Sing Wuu, Peng Gao, Chien-Jung Huang, Shui-Yang Lien, Wen-Zhang Zhu
Summary: In this study, high-performance ITO thin films were prepared using PEALD method. The film thickness and tin content can be controlled by adjusting the cycle ratio, leading to low resistivity, high mobility, and high doping efficiency.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
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)