SrZrO热障涂层的大气等离子喷涂工艺优化及高温性能研究

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中图分类号：TG174 文献标识码：A 文章编号：1004-8901（2025）05-0053-03

Study into the Optimization of Atmospheric Plasma Spraying Process of SrZrO3 Thermal Barrier Coatingsand their High-Temperature Performance

WANG Wen-bin （NanyangInstituteof Technology，NanyangHenan 473o04，China）

Abstract：To address the temperature limitation of conventional YSZ thermal barrier coatings， SrZrO3 thermal barrier coatings are prepared by optimizing the atmospheric plasma spraying process （with current 550A Ar/H240/10L/min ，spray distance 100mm ）through Taguchi experiments.Results indicate that after aging at 1600∘C for 360 hours，them 1-ZrO2 phase in the coating reached 27% ，with the thermal expansion coefficient （8～10×10-6K-1 ）decreasingwith the phase transformation. Thermal conductivity stabilized at 1.82W/（m⋅K） after agingat 1 000°C . By constructing a SrZrO3 /YSZ bilayer structure，thermal cycling life is increased to 548 cycles—a 54.8-fold improvement overthmonolarsstemfectielyitigatingtralmismatchstreseetwnthcamiclarandondoatingiseseahprovides a novel coating solution for protecting high-temperature components in aeroengines.

Keywords： SrZrO3 thermal barrier coating；atmospheric plasma spraying；thermal cycling life doi：10.3969/j.issn.1004-8901.2025.05.015

热障涂层是将低导热、耐高温的陶瓷材料与金属基体复合，用以降低高温环境中金属表面温度的关键防护技术[1-3]。（剩余4354字）