Article
Chemistry, Physical
Ruixiang He, Kezhi Li, Longqi Liu
Summary: The ablation resistance of plasma-sprayed NbC-modified ZrC coatings was tested with an oxyacetylene flame. The phase composition of the heat-treated ZrO2-Nb2O5 plates was determined. The results showed that the ZrC-20 mol% NbC coating had the best ablation property, forming a dense oxide layer and a composite film of ZrO2 crystals.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Guanghui Feng, Yulan Yu, Xiyuan Yao, Yujun Jia, Jia Sun, Hejun Li
Summary: The investigation focused on the ablation behavior and thermal stress of monolayered ZrC-SiC coatings with different SiC amounts. An alternate coating with 4 sublayers containing 10 and 70 vol.% SiC was applied on SiC-coated C/C composites. Ablation tests under oxyacetylene torch showed that the alternate coating provided superior ablation properties by enduring mechanical denudation and hindering oxygen transport inward during ablation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Coatings & Films
Xiao Luo, Xin Yang, Qizhong Huang, Anhong Shi, Cunqian Fang, Yuanqi Weng
Summary: The study demonstrates that in high-temperature aerobic environment, the ZrC-TaC/ZrC-SiC coating system can effectively protect carbon materials from oxidation and improve ablation resistance. However, at lower heat flux, inadequate chemical combination between the layers can result in reduced overall resistance to ablation.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Ruixiang He, Kezhi Li, Wenhao Zhang, Longqi Liu
Summary: The ablation resistance of plasma-sprayed NbC-TaC coatings on ZrC/SiC doublelayer-coated C/C composites was tested using an oxyacetylene flame. The phase composition of ZrO2-Ta2O5 systems heat-treated at 2100 degrees C was determined. The formation of a Ta-O film extended the effective ablation time of the TaC coating, and the addition of 37.5 mol% TaC produced the best ablation property.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Guanghui Feng, Hejun Li, Xiyuan Yao, Bin Ren, Yujun Jia
Summary: In this study, a multilayer coating based on ZrC-SiC system was successfully fabricated and its performance was evaluated through ablation tests. The results showed that the coating exhibited excellent ablation resistance, with only shallow ablation pit forming under laser irradiation.
Article
Materials Science, Multidisciplinary
Ruixiang He, Kezhi Li, Qian Liu
Summary: Among NbC-ZrC coatings, an NbC coating modified with 30 mol.% ZrC demonstrates the best ablation-resistant property, forming a thick oxide film primarily composed of NbO and NbxZr1-xO2 phases. Additionally, the reaction-diffusion formed Nb-rich layer acts as a barrier to infiltrating oxygen, providing anti-oxidation protection for the SiC transition layer.
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
Materials Science, Ceramics
Guanghui Feng, Hejun Li, Xiyuan Yao, Lei Chen, Yulan Yu, Hanhui Wang, Miaomiao Chen
Summary: The ablation behavior of ZrC and ZrO2 coatings on SiC-coated carbon/carbon composites was studied under different heat fluxes, demonstrating that ZrO2 coating exhibited denser oxide layer and lower mass consumption compared to ZrC. The differences were attributed to higher surface temperature and lower melting point of ZrO2 coating, leading to easier sintering during ablation.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Yunyu Li, Yichen Liu, Chen Guo, Yibin Chen, Junhao Liang, Jian Zhang, Jiaping Zhang, Lingjun Guo
Summary: The realization of functionalized coating design is an effective means to enhance the ablation resistance. A multi-layer structure coating based on ZrC composite was successfully developed and applied on the surface of SiC coated C/C composites. The coating demonstrated excellent ablation resistance for 240 s under harsh ablation environments with temperatures exceeding 2200 degrees C.
Article
Materials Science, Multidisciplinary
Guanghui Feng, Xiyuan Yao, Yulan Yu, Hejun Li
Summary: In this study, the influence of sublayer numbers on structure evolution and thermal stress level was investigated. An alternate coating with ZrC-10 vol.% SiC and ZrC-70 vol.% SiC sublayers was designed and assessed using oxyacetylene torch. The results showed that the coating with 6 sublayers exhibited the best ablation property and the least thermal stress among all samples. Si-based products were found to contribute to the development of a dense profile on the surface, and the generated alternate dense/porous scale had good toughness.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(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
Metallurgy & Metallurgical Engineering
Ke Zou, Jian-peng Zou, Chun-ming Deng, Min Liu, Xue-zhang Liu, Rui-min Zhao, Shun-hua Li, Ren-bo Zhu, Di Gao
Summary: In this study, TiB2-SiC coating was prepared using supersonic atmospheric plasma spraying (SAPS) with TiB2-SiC powders after spray granulation and vacuum calcination. The effects of spraying power and distance on the coating properties were investigated, and the optimal fabrication processing of SAPS was determined. The coating prepared by calcined powders exhibited uniform particle size distribution, good sphericity, and dense structure with high deposition efficiency.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(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, Multidisciplinary
Zhe Zhou, Furong Niu, Xiangfen Hu, Xianfeng Yang, Peng Liu, Long Zhang, Xizhi Fan, Weiguo Mao, Bei Zhang, Zexu Sun, Maozhong Yi
Summary: A W/ZrC/SiC multilayer coating was prepared on carbon/carbon composites using reactive melt infiltration and atmospheric plasma spray. Microstructure analysis revealed that the coating had a smooth surface morphology, well-defined interfaces, uniform thickness, and high density. The comprehensive effect of the multilayer coating provided the carbon/carbon composites with excellent ablation resistance.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Materials Science, Ceramics
Xiao-long Wang, Yu-xuan Shao, Ming-yan Guo, Yong Yang, Yu-duo Ma, Yu-hang Cui, Wen-wei Sun, Yan-chun Dong, Dian-ran Yan
Summary: The study investigated NbB2-NbC and Nb-B4C composite coatings fabricated by plasma spraying, revealing the reaction mechanism and formation mechanism of Nb-B4C composite powders. NbB2-NbC composite powder underwent melting-depositing during plasma spraying, while Nb-B4C composite powder formed the coating through solid phase diffusion-reaction. The coating obtained by reactive plasma spraying Nb-B4C composite powder showed better properties compared to the coating prepared by NbB2-NbC composite powder.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)