| Electrochemical and Reaction Bonding Processing of Thick ZrO_2/Al_2O_3 Composite Coatings |
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| 作者姓名： | WANG Zhou-cheng XIAO Ping . Dept. of Materials Science and Engineering Xiamen University Xiamen China . Manchester Materials Science Centre University of Manchester Manchester UK |
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| 作者单位： | 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 |
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| 摘 要： | CERAMIC coatings are currently of much interest forapplications in high-temperature and highly corrosiveenvironments.Formation of ceramic coatings byelectrochemical processing is a relatively newtechnique.'1'It presents several advantages overalternative coating techniques.'2'Recently wedeveloped a novel fabrication technique for theproduction of ceramic/ceramic and metal/ceramiccomposite coatings by electrochemical processing.'31The technique combined two electrochemicaldeposition methods,…
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Electrochemical and Reaction Bonding Processing of Thick ZrO2/Al2O3 Composite Coatings |
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| WANG Zhou-cheng,XIAO Ping . Dept. of Materials Science and Engineering,Xiamen University,Xiamen,China . Manchester Materials Science Centre,University of Manchester,Manchester,UK.Electrochemical and Reaction Bonding Processing of Thick ZrO_2/Al_2O_3 Composite Coatings[J].Transactions of Materials and Heat Treatment,2004,25(5). |
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| Authors: | WANG Zhou-cheng XIAO Ping |
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| Affiliation: | 1. Dept. of Materials Science and Engineering, Xiamen University, Xiamen, China
2. Manchester Materials Science Centre, University of Manchester, Manchester, UK |
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| Abstract: | 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 ZrtVA^Oa composite coatings have been fabricated on metal substrate. |
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| Keywords: | Electrophoretic deposition reaction bonding process composite coating A12O3 ZrO2 |
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