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文献标识码:A Al2O3- based multiphase ceramic coating of Al-CuO system prepared by SHS reaction thermal spraying on AZ91D MA Zhuang, LIN Peng, DONG Shi-zhi, LI Zhi-chao (College of Materials Science and Engineering, Liaoning Technical University, Fuxin12300, China) Abstract: With SHS reaction flame spraying, Al2O3-based multiphase ceramic coating was prepared on AZ91D......
) Abstract:SiC-YAG(Y3Al5O12) ceramic composite powders were prepared by co-precipitation coating method. Mechanism of co-precipitation coating of SiC powders with Y3+ and Al3+ precursors was investigated... powders was also studied. The results show that co-precipitation coating can be realized at a final pH of 9 and a precipitant titration rate of 5 ml·min-1. Key words:ceramic materials; co......
Mechanical Behaviors of ZrO2-Al2O3 Ceramic Composites with Y2O3 as Stabilizer WANG Yuchun1,QIU Tai1,Shen Chun1 (1.College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China) Abstract:The ZrO2-Al2O3 ceramic composites were prepared by appropriate techniques with commercial ZrO2 and Al2O3 powders as raw materials and Y2O3 as stabilizer. The results......
in the ceramic coating sminish while the aperture largen in the micro-arc oxidation process, and the surface of the ceramic coatingmelted and solidified in the process.XRD studies of ceramic coatings...Microstructures and Composition of Ceramic Coatings on Aluminum Produced by Micro-Arc Oxidation SHEN De-jiu1,WANG Yu-lin1,XING Guang-zhong1,Gu Wei-Chao1 (1.Key Laboratory of Metastable Materials......
Multilayer ceramic coating for impeding corrosion of sintered NdFeB magnetsK.M.Deen22. Department of Metallurgy and Materials Engineering CEET,University of the Punjab摘 要:ceramic coating applied through cathodic arc physical vapour deposition(CAPVD) for protection of sintered NdFeB permanent magnets.The performance of ceramic coating......
ZrO2热障涂层残余应力分析 孔德军1,邹世坤2,张永康3,朱伟1 (1.江苏工业学院机械工程系,江苏,常州,213016;2.北京航空制造工程研究所,北京,100024;3.江苏大学机械工程学院,江苏,镇江,212013) 摘要:用扫描电子显微镜(SEM)观察了等离子喷涂ZrO2涂层的显微结构,并用X射线衍射法(XRD)测试了ZrO2涂层相的组成和残余应力.同时测试了激光冲击处理和激光热处理后的ZrO2涂层残余应力分布,分析了热障涂层残余应力形成机理.结果表明,等离子喷涂ZrO2涂层表面残余应力均为拉应力,其均值为179.2MPa,经激光表面处理后的ZrO2涂层残余应力均表现为压应力;热应力对涂层残余应力贡献最大,当热应力超过涂层结合强度时,涂层脱落,通过控制涂层残余应力可以提高涂层界面结合强度. 关键词:ZrO2涂层; X衍射法(XRD); 残余应力; 激光冲击处理; 激光热......
Flame Pyrolysis Spraying of Alumina-Yttria Ceramic Coating李正伟,何业东,齐慧滨,朱日彰摘 要:Ｆｉｇ．１Ｓｃｈｅｍａｔｉｃｄｉａｇｒａｍｏｆｔｈｅｔｅｓｔｅｑｕｉｐｍｅｎｔ(１)ｃｏｍｐｒｅｓｅｄａｉｒ；(２)ｅｔｈａｎｏｌｓｏｌｕｔｉｏｎ；(３)ｆｌｏｗｍｅｔｅｒ；(４)ｐｒｅｓｕｒｅｇａｕｇｅ；(５)ｓｐｒａｙｎｏｚｌｅ；(６)ｓｔａｉｎ...关键词:......
of the coating with the substrate is more than 17.5 MPa. Key words: LY12 aluminum alloy; micro-arc oxidation; ZrO2 ceramic coating; adhesive strength 1 Introduction Micro-arc oxidation is a novel surface... and morphology of the coatings were studied by XRD and SEM. The adhesive strength of ceramic coatings was assessed by thermal shock test and tensile test. The results show that the coating is composed of m-ZrO2......
Institute of Technology, Harbin 150001, PRC) 摘要:Micro-plasma oxidation (MPO) technique is a new technique by which compound ceramic coating can be grown in situ on Al, Ti, Mg and many other valve..., and the porosity of the outer layer of the coating are increased while the compactness of the inner layer of the coatings are improved. 关键词:Micro-plasma oxidation; Ceramic coatings; EIS; Ti alloy......
treatment could be attributed to the formation of hard ceramic coatings. Fig.2 EDAX spectra of loose layer(a) and dense layer(b) in microarc oxidation coating Fig.3 XRD patterns... is strengthened. This is caused by the character difference between metal and ceramic oxide coating. Their distortion is not concurrent in tensile process. The thicker the oxide coating is, the more brittle......
