| Cathodic micro-arc electrodeposition of yttrium stabilized zirconia (YSZ) coatings on FeCrAl alloy |
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| 作者姓名： | YANG Xiaozhan HE Yedong WANG Deren & GAO Wei . State Key Laboratory of New Ceramics and Fine Processing Depart-ment of Materials Science and Engineering Tsinghua University Beijing China . Beijing Key Laboratory for Corrosion Erosion and Surface Technol-ogy University of Science and Technology Beijing Beijing China . School of Engineering The University of Auckland New Zealand Correspondence should be addressed to Yang Xiaozhan |
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| 作者单位： | YANG Xiaozhan(State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;Beijing Key Laboratory for Corrosion, Erosion and Surface Technology, University of Science and Technolog);HE Yedong,WANG Deren(Beijing Key Laboratory for Corrosion, Erosion and Surface Technology, University of Science and Technology Beijing, Beijing 100083, China);GAO Wei(School of Engineering, The University of Auckland, New Zealand) |
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| 基金项目： | 国家自然科学基金，北京市重点实验室基金 |
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| 摘 要： | Zirconia-based coatings, especially yttrium stabilized zirconia (YSZ), are the best ceramic coatings for high temperature applications due to their superior mechanical and thermal behavior1]. And YSZ is of considerable in-terest for applications in solid-oxide fuel cells due to its high oxygen-ion conductivity and stability in oxidizing and reducing atmospheres, oxygen sensors and microelec-tronic devices2]. The traditional methods to produce the YSZ coatings are plasma spray, electron be…
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Cathodic micro-arc electrodeposition of yttrium stabilized zirconia (YSZ) coatings on FeCrAl alloy |
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| YANG Xiaozhan,,HE Yedong,WANG Deren & GAO Wei . State Key Laboratory of New Ceramics and Fine Processing,Depart-ment of Materials Science and Engineering,Tsinghua University,Beijing ,China, . Beijing Key Laboratory for Corrosion,Erosion and Surface Technol-ogy,University of Science and Technology Beijing,Beijing ,China . School of Engineering,The University of Auckland,New Zealand Correspondence should be addressed to Yang Xiaozhan.Cathodic micro-arc electrodeposition of yttrium stabilized zirconia (YSZ) coatings on FeCrAl alloy[J].Chinese Science Bulletin,2003,48(8). |
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| Authors: | YANG Xiaozhan HE Yedong WANG Deren GAO Wei |
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| Institution: | e-mail:yxz002 @mail.tsinghua.edu.cn |
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| Abstract: | The formation of ceramic coatings on metal substrate by cathodic electrolytic deposition (CELD) has received more attention in recent years. But only thin films can be prepared via CELD. Yttrium stabilized zirconia (YSZ) ceramic coatings were deposited on FeCrAl alloy by a novel technique--cathodic micro-arc electrodeposition (CMED). The result shows that, when a high pulse electric field is applied to the cathode which was pre-deposited with a thin YSZ film, dielectric breakdown occurs and micro-arc discharges appear. Coatings with reasonably thickness of ～300μm and crystalline structure can be deposited on the cathode by utilizing the energy of the micro-arc. The thickness of the as-deposited coating is dominated by the voltage and the frequency. Y2O3 is co-deposited with ZrO2 when Y(NO3)3 was added to the electrolyte, which stabilize t-phase, t′- phase and c-phase of ZrO2 at room temperature. The amount of the m-ZrO2 in the coating is diminished by increasing the concentration of Y(NO3)3 in the electrolyte. This report describes the processing of CMED and studies the microstructure of the deposited YSZ coatings. |
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| Keywords: | cathodic micro-arc electrodeposition oxide coating yt-trium stabilized zirconia (YSZ) |
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