Dense ZrB2–MoSi2 composite coating fabricated by low pressure plasma spray (LPPS)
Dense ZrB2–MoSi2 composite coating fabricated by low pressure plasma spray (LPPS)
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DOI：
10.1016/j.ceramint.2013.05.038
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发表时间：
2013-12
影响因子：
5.2
通讯作者：
Y. Niu;Hongyan Wang;H. Li;Xuebin Zheng;C. Ding
中科院分区：
文献类型：
--
作者：
Y. Niu;Hongyan Wang;H. Li;Xuebin Zheng;C. Ding
采用低压等离子喷涂技术制备了ZrB 2-MoSi 2复合涂层。对涂层的显微结构和氧化行为进行了表征，并与ZrB 2-SiC涂层进行了比较。ZrB 2-MoSi 2涂层组织致密，孔隙率小于5%，MoSi 2相均匀分布在ZrB 2基体中。ZrB 2 - 30vol%MoSi2涂层的高温抗氧化性能明显优于ZrB 2 - 30vol%SiC涂层。认为ZrB 2-MoSi 2涂层中MoSi 2在基体中的均匀分布和组织致密是其优良抗高温氧化性能的主要原因。
Low pressure plasma spray was applied to fabricate ZrB2–MoSi2composite coatings. Their microstructure and oxidation behavior were characterized and compared with those of the ZrB2–SiC coatings. The ZrB2–MoSi2coating displayed compact and lamellar microstructure with porosity lower than 5%, where MoSi2phase was uniformly distributed in the ZrB2matrix. ZrB2–30 vol% MoSi2coating exihibited much better oxidation-resistance at high temperature compared to the ZrB2–30 vol% SiC coating. It is thought that the fine distribution of sufficient MoSi2in the matrix and dense microstructure of the ZrB2–MoSi2coating contributed to its excellent high temperature oxidation-resistance.