Preparation and Characterization of 8YSZ Thermal Barrier Coatings on Rare Earth-Magnesium Alloy
Preparation and Characterization of 8YSZ Thermal Barrier Coatings on Rare Earth-Magnesium Alloy
复制标题
稀土镁合金8YSZ热障涂层的制备及表征
DOI：
10.1007/s11666-011-9616-2
复制
发表时间：
2011-02
期刊：
影响因子：
--
通讯作者：
Zhenhua Xu
中科院分区：
文献类型：
--
作者：
Xizhi Fan;Yangjia Liu;Zhenhua Xu
由8wt.%稳定的氧化锆制成的热障涂层（TBC）采用大气等离子喷涂技术在稀土镁合金表面制备了氧化钇（8YSZ）涂层。采用不同的冷却介质，包括冷水、压缩空气和沉积过程中的自然冷却，通过控制基底温度制备了三种涂层。研究了涂层的相组成、力学性能和抗热震性能。这些涂层对提高镁合金的耐蚀性、耐磨性和热防护性能具有重要意义。在等离子喷涂过程中，基体温度影响基体组织和涂层与基体的结合强度。等离子喷涂时采用压缩空气冷却基体的涂层具有良好的抗热震性。涂层失效主要是由基体氧化和涂层与基体热膨胀失配引起的。
Thermal barrier coatings (TBCs) of zirconia stabilized by 8 wt.% yttria (8YSZ) on top of rare earth-magnesium alloy were fabricated by atmospheric plasma spraying. Three coatings were prepared by controlling the substrate temperature with different cooling media including cold water, compressed air, and natural cooling during deposition. The phase compositions, mechanical properties, and thermal shock resistance of these coatings were investigated. These coatings are very helpful to the improvement of corrosion and wear resistances and thermal protection of magnesium alloy. During plasma spraying, the substrate temperature affects the microstructure of substrate and the bonding strength between the coating and the substrate. The coating whose substrate was cooled by compressed air during plasma spraying has a good thermal shock resistance. The coating failure is mainly induced by the substrate oxidation and thermal expansion mismatch between the coating and the substrate.
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影响因子：
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