Article
Materials Science, Coatings & Films
Yu-hang Cui, Qi Zhang, Yu-xuan Shao, Yong Yang, Yu-duo Ma, Wen-wei Sun, Yan-wei Wang, Xing-yu Wang, Yan-chun Dong
Summary: Investigated the method of using Zr-B4C powder to synthesize ZrB2-ZrC composite coating, resulting in a dense and fine grain microstructure, improving the quality and properties of the coating.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Bao-Xia Ma, Yang Wang, Si-Cong Zhao, Hao-Nan Wu, Yang Qiao
Summary: The feasibility of in situ synthesis of ZrB2-SiC-ZrC composite coatings on ZrC ceramics by reactive plasma spraying (RPS) was investigated. The phase evolution during the plasma spraying process was understood through careful exploration of the reaction behavior in the ZrH2-Si-B4C system.
Article
Materials Science, Ceramics
Wei Li, Lei Wang, Yong Yang, Xia Zhang, Yu-hang Cui, Yu-duo Ma, Yan-wei Wang, Wen-wei Sun, Xing-yu Wang, Yu-xuan Shao
Summary: Niobium carbide composite coatings were prepared on titanium alloy surface by plasma spraying NbC-Al2O3, Nb-SiC and Nb-SiC-Al composite powders. The Nb-SiC-Al composite coating exhibited a more uniform microstructure, higher hardness, better toughness, and scratch resistance compared to NbC-Al2O3 and Nb-SiC composite coatings.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Coatings & Films
Jing Hu, Peng Liu, Qi Li, Jianliang Xie, Shaoliang Jiang, Xianyu Jiang, Xin Wang, Li Zhang, Liangjun Yin, Haipeng Lu, Longjiang Deng
Summary: The spraying power significantly influences the physical properties and oxidation resistance of ZrB2-LaF3 coatings, with both too low and too high powers leading to deteriorated coating quality. Moderate spraying power is found to be optimal for achieving desired coating characteristics.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Hao Zhang, Min Ge, Huifeng Zhang, Weijia Kong, Shouquan Yu, Weigang Zhang
Summary: The study synthesized continuous SiC-ZrB2 composite ceramic fibers with excellent mechanical properties and high-temperature creep resistance.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Coatings & Films
Yu-xuan Shao, Yong Yang, Ke-ran Li, Ce-ce Zhao, Yan-wei Wang, Xing-yu Wang
Summary: By introducing in-situ reaction between zirconium and silicon carbide in the atmospheric plasma spraying process, a dense microstructure and promising mechanical properties were achieved in the ZrC-ZrSi2 composite coating. Water-quenching experiment revealed the formation mechanism of the target phase, providing valuable references for preparing ultra-high temperature ceramic coatings.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yu-Xuan Shao, Yong Yang, Hao-En Liang, Ce-Ce Zhao, Yan-Wei Wang, Wei Tian
Summary: Dense and nanostructured YSZ-ZrC composite coatings were synthesized by atmospheric plasma spraying. Different YSZ contents in the reactive YSZ-Al-SiC precursors were used, and the phase, microstructure, and mechanical properties of the coatings were fully revealed. The phase transformation of the YSZ component from tetragonal phase to cubic phase in the composite coating was confirmed by experimental evidence. The highest yielding of ZrC phase was 35.4 wt%, and the highest microhardness and fracture toughness of the composite coatings were 823 HV0.1 and 2.79 MPa/m2, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Coatings & Films
Yu-xuan Shao, Yong Yang, Yong-gang Wang, Ce-ce Zhao, Wei Tian, Yan-wei Wang, Xing-yu Wang
Summary: A ZrC anti-ablation composite coating was prepared using atmospheric plasma spraying, by introducing the chemical reaction between Zr and SiC. The as-prepared ZrC coating showed desirable protection for 20 s ablation, with the oxide layer formed after ablation mainly composed of tetragonal zirconia (over 50 wt%). The microstructure evolution of the ablated coating surface was clearly observed. It was found that zirconia and silica exhibited good compatibility and cooperation after 15 s ablation, forming a dense Zr-Si-O anti-ablation layer. The presence of meta-stable zirconia in the oxide layer could be attributed to the smaller grain size and compact arrangement of zirconia particles.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Kalpana Gupta, Qasim Murtaza, N. Yuvraj
Summary: The aim of this research is to investigate the potential of ZrB2-SiC-based ceramic coatings as a protective layer for Inconel 718 substrates. The study focuses on using shrouded plasma spraying technology and examining the effect of exposure to molten sulfate-vanadate salts on the coating's properties. The results show that the ZrB2-SiC coating exhibits resistance to hot corrosion and interacts with the molten salt mixture, forming binary oxide phases. Despite the leaching of B2O3 from the coating, the physical properties of ZrB2-SiC prevent the penetration of the molten salt, reducing its corrosive effect.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Ashok Meghwal, Steven Matthews, Hugo Howse, Christopher C. Berndt, Andrew Siao Ming Ang
Summary: Thermal spray chromium carbide-based composites are extensively used in industry due to their superior oxidation resistance at high temperatures. This study compared the performance of HVOF sprayed coatings from an atomized chromium carbide-based feedstock with those from a conventional agglomerated and sintered feedstock. The coatings were exposed to high temperatures in air and steam environments to simulate industrial power plant working conditions. The results showed that the chromium carbide content remained stable in the atomized feedstock, while carbide dissolution was observed in the conventional feedstock. Air oxidation resulted in the formation of a coarse oxide surface, while steam treatment formed a finer and more uniform Cr2O3 surface. The Cr23C6-40NiCr coating exhibited an intact and crack-free oxide scale, and its microhardness was comparable to that of the Cr3C2-25NiCr coating.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Ceramics
Shahla Torabi, Zia Valefi, Naser Ehsani
Summary: This study investigates the effect of oxy-acetylene flame angle on the erosion resistance of SiC/ZrB2-SiC/ZrB2 multilayer coatings. The results show that the destruction mechanism of these coatings is controlled by both mechanical and chemical factors. Chemical erosion becomes dominant at higher flame angles, while mechanical erosion prevails at lower angles. The SiC/ZrB2-20% wt. SiC/ZrB2 coating exhibits the best erosion resistance among the coatings tested.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Coatings & Films
Rui-qiang Wang, Shi-zhen Zhu, Hou-bing Huang, Ze-feng Wang, Yan-bo Liu, Zhuang Ma, Feng Qian
Summary: The TaSi2 modified ZrB2-SiC coatings were prepared to improve density and ablation resistance. Ta element was mainly present in the form of fine particles with nanoscale in the coatings, contributing to the reduction of porosity and enhancement of mechanical properties and ablation resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Xueting Xu, Xiaohui Pan, Yaran Niu, Hong Li, Dewei Ni, Shangsong Huang, Xin Zhong, Xuebin Zheng, Jinliang Sun
Summary: The study found that the ablation resistance of ZrB2-based coating was better than that of ZrC-based coating under the same environment, exhibiting lower surface temperature, thinner thickness of both the total oxide layer and the SiC-depleted layer. Possible reasons for these phenomena were speculated based on microstructure characters and thermodynamic analysis.
Article
Materials Science, Coatings & Films
Benjamin W. Lamm, Jake W. McMurray, Ercan Cakmak, Michael J. Lance, David J. Mitchell
Summary: In this study, the CALPHAD approach was used to investigate zirconium carbide deposition. Phase equilibria were calculated and used to explore the chemical vapor deposition (CVD) processing space in the ZrCl4-CH3SiCl3-CH4-H-2 system. The results showed that the most important factor in controlling the composition was the ratios of CH4:ZrCl4, which determined the nature of the composition - either carbide or silicide.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Wei Li, Yong Yang, Han Li, Xia Zhang, Yan-wei Wang, Wei Tian
Summary: Niobium carbide composite coatings with Nb2C, NbC, Nb3Si as the main phases were prepared in situ on the surface of TC4 titanium alloy by plasma spraying Nb-SiC composite powder. The microstructure of the coating was characterized in detail by TEM, and the reaction mechanism of Nb-SiC was revealed. The formation of sub-micron and nano-scale NbC grains dispersed in Nb3Si region, nano-Nb/Nb3Si cellular eutectic region, and equiaxed Nb2C nano-grains region in the coating was observed. The investigation provides a reference for the reaction synthesis of advanced nanocomposites using Nb-SiC system.
CERAMICS INTERNATIONAL
(2023)
