Electrochemical and Reaction Bonding Processing of Thick ZrO2/Al2O3 Composite Coatings
来源期刊：材料热处理学报2004年第5期
论文作者：WANG Zhou-cheng XIAO Ping
关键词：Electrophoretic deposition; reaction bonding process; composite coating; Al2O3; ZrO2;
摘 要：A novel technique combining electrophoretic deposition (EPD) and reaction bonding process (RBP) is developed to fabricate thick ZrO2/Al2O3 composite coatings. Mixed organic solvents are used here to make suspension containing yttria stablised zirconia (YSZ) and aluminium (Al). The results show that densely packed green form coatings are deposited using a mixture of ethanol and acetylacetone as suspension medium and ball milling for 48 hours. On subsequent heat treatment, melting and oxidation of aluminium in the green forms promote densification during sintering. By these means,thick, uniform and crack-free ZrO2/Al2O3 composite coatings have been fabricated on metal substrate.
WANG Zhou-cheng1，XIAO Ping2
(1.Dept. of Materials Science and Engineering, Xiamen University, Xiamen, China;
2.Manchester Materials Science Centre, University of Manchester, Manchester, UK)
摘要:A novel technique combining electrophoretic deposition (EPD) and reaction bonding process (RBP) is developed to fabricate thick ZrO2/Al2O3 composite coatings. Mixed organic solvents are used here to make suspension containing yttria stablised zirconia (YSZ) and aluminium (Al). The results show that densely packed green form coatings are deposited using a mixture of ethanol and acetylacetone as suspension medium and ball milling for 48 hours. On subsequent heat treatment, melting and oxidation of aluminium in the green forms promote densification during sintering. By these means,thick, uniform and crack-free ZrO2/Al2O3 composite coatings have been fabricated on metal substrate.
关键词:Electrophoretic deposition; reaction bonding process; composite coating; Al2O3; ZrO2;
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