摘要
采用大气等离子喷涂技术,分别使用传统的纳米氧化钇部分稳定的氧化锆(下文简称YSZ)和在YSZ中加入25wt.%CeO_2(下文简称CSZ)在高温合金钢表面制备两种热障涂层。将两种涂层在900℃下进行热震试验,使用SEM和EDS技术分析YSZ和CSZ陶瓷涂层的抗热震性能。结果表明,CSZ在热循环第63次时失效,而YSZ在第21次失效,新型的CSZ涂层抗热震性能明显优于YSZ。CeO_2可以提高Y_2O_3部分稳定ZrO_2的抗热震性能。
An atmospheric plasma spraying technology was used to prepare two thermal barrier coatings on the surface of high-temperaturealloy, in which the conventional nanosized yttria-partially-stabilized zirconia (YSZ) and YSZ + 25wt.% CeO2 (CSZ) were applied,respectively. The thermal shock test was carried out at 900 ℃ and SEM and EDS technologies were used to analyze the thermal shockresistanceof YSZ and CSZ ceramic coatings. The results showed that the CSZ coating failed at the 63rd thermal shock test and the YSZcoating failed at the 21st test, indicating that the thermal shock-resistance of the new CSZ coating should be significantly superior to that ofthe YSZ coating under the same condition and CeO2 could improve the thermal shock-resistance of yttria-partially-stabilized zirconia.
出处
《陶瓷学报》
CAS
北大核心
2016年第5期478-481,共4页
Journal of Ceramics
基金
总装备部武器预研基金项目(51461020201JW1301)
关键词
氧化钇稳定的氧化锆
等离子喷涂
陶瓷涂层
热震性能
yttria stabilized zirconia
air plasma spray
ceramic coating
thermal shock resistance