引用本文:邵宇轩,王磊,杨勇,赵策策,王彦伟,马玉夺,崔宇航.纳米Al2O3对等离子喷涂ZrC-ZrSi2复合涂层结构与性能的影响∗[J].中国表面工程,2021,34(4):30~37
SHAO Yuxuan,WANG Lei,YANG Yong,ZHAO Cece,WANG Yanwei,MA Yuduo,CUI Yuhang.Effects of Nano-Al2O3 on the Microstructure and Properties of ZrC-ZrSi2 Composite Coating Prepared by Plasma Spraying[J].China Surface Engineering,2021,34(4):30~37
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纳米Al2O3对等离子喷涂ZrC-ZrSi2复合涂层结构与性能的影响∗
邵宇轩1,2, 王磊1, 杨勇1,2, 赵策策1, 王彦伟1, 马玉夺1, 崔宇航1
1.河北工业大学材料科学与工程学院 天津 300401;2.河北省新型功能材料重点实验室 天津 300401
摘要:
大气等离子喷涂 ZrC-ZrSi2 陶瓷涂层的孔隙率高,提高等离子喷涂 ZrC-ZrSi2 陶瓷涂层的致密度成为亟待解决的问题。 在 TC4 钛合金表面采用大气等离子喷涂 ZrC-ZrSi2 复合粉和 ZrC-ZrSi2-Al2O3 复合粉分别制备两种复合涂层。 研究纳米 Al2O3 对等离子喷涂 ZrC-ZrSi2 复合涂层组织结构与性能的影响。 结果表明,添加了 Al2O3 的 ZrC-ZrSi2 复合涂层的组织结构更为致密,相较于 ZrC-ZrSi2 复合涂层具有更优异的力学性能。 熔点相对较低的 Al2O3 能够在喷涂焰流中先熔化,熔融态的 Al2O3 能够填充在 ZrC-ZrSi2 复合涂层的孔洞处,提高复合涂层的致密度,改善涂层的力学性能。 研究成果可为提高大气等离子喷涂制备含高熔点组分复合涂层的致密度提供指导。
关键词:  大气等离子喷涂  ZrC-ZrSi2 复合涂层  Al2O3 添加剂
DOI：10.11933/j.issn.1007-9289.20210421002
分类号:TQ174
基金项目:国家自然科学基金资助项目(52072110)
Effects of Nano-Al2O3 on the Microstructure and Properties of ZrC-ZrSi2 Composite Coating Prepared by Plasma Spraying
SHAO Yuxuan1,2, WANG Lei1, YANG Yong1,2, ZHAO Cece1, WANG Yanwei1, MA Yuduo1, CUI Yuhang1
1.School of Material Science and Engineering, Hebei University of Technology, Tianjin 300401 , China;2.Key Lab.for New Type of Functional Materials in Hebei Province, Tianjin 300401 , China
Abstract:
There is still a pressing need for improving the densification of ZrC-ZrSi2 ceramic composite coating prepared by atmospheric plasma spraying. Two kinds of composite coatings were prepared on TC4 (Ti6Al4V) substrate by plasma spraying ZrC-ZrSi2 and ZrC- ZrSi2 -Al2O3 composite powders. Effects of nano-Al2O3 on the microstructure and properties of ZrC-ZrSi2 composite coating prepared by plasma spraying were investigated. Al2O3 -contained composite coating possessed denser microstructure compared to ZrC-ZrSi2 composite coating. Correspondingly, enhanced mechanical properties were observed in ZrC-ZrSi2 -Al2O3 composite coating. Al2O3 with relatively low melting point which could firstly melt in the plasma jet is postulated to fill the pores formed during the spraying process. Therefore, Al2O3 is considered as the promising candidate for improving the microstructure and properties of ZrC-ZrSi2 composite coating. A guidance is provided for improving the densification of the composite coating containing high-melting point component prepared by plasma spraying.
Key words:  atmospheric plasma spraying  ZrC-ZrSi2 composite coating  Al2O3 additive
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