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热喷涂技术:2021,13(1):43-52
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Y3Al5O12 掺杂对 YSZ 热障涂层微观结构和高温相稳定性的影响
(1.玉柴联合动力股份有限公司;2.安徽工业大学 先进金属材料绿色制备与表面技术教育部重点实验室;3.矿冶科技集团有限公司)
Effect of Y3Al5O12 Doping on Microstructure and High-temperature Phase Stability of YSZ Thermal Barrier Coatings
(1.Y&C Engine Co., Ltd;2.Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials,Ministry of Education, Anhui University of Technology;3.BGRIMM Technology Group)
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中文摘要: 本文采用大气等离子喷涂技术制备了不同 Y3Al5O12 含量的 YSZ@Y3Al5O12/NiCrAlY 热障涂层, 研究了 Y3Al5O12 对 YSZ@Y3Al5O12 热障涂层的微观组织结构和高温相稳定性的影响。 结果表明: 等离子喷涂 YSZ@ Y3Al5O12 涂层呈典型的层状结构, Y3Al5O12 和 YSZ 交替沉积。 随着 Y3Al5O12 含量的升高, 层与层之间的柱状晶结 构逐渐消失。制备态的YSZ@Y3Al5O12涂层主要含有c-ZrO2晶相。1250℃下烧结50h后YSZ涂层发生了明显的相变, 而 1150℃和 1250℃热处理后 YSZ@Y3Al5O12 涂层含有相同的 c-ZrO2 和 Y3Al5O12 两种晶相, 表明 Y3Al5O12 可以改 善 YSZ 的高温相稳定性。
Abstract:YSZ@Y3Al5O12/NiCrAlY thermal barrier coatings with different contents of Y3Al5O12 were prepared by air plasma spraying. The effect of Y3Al5O12 on microstructure and high-temperature phase stability of YSZ@ Y3Al5O12 coatings were investigated. The results showed that the plasma-sprayed YSZ@Y3Al5O12 coating had a typical lamellar structure, and alternate deposition of YSZ and Y3Al5O12. With the increase of the content of Y3Al5O12, the columnar crystal structure between layers gradually disappeared. The as-deposited YSZ@ Y3Al5O12coatings were mainly composed of c-ZrO2 phase. After sintering at 1250℃ for 50h, YSZ coating had obvious phase transformation, while YSZ@Y3Al5O12 coating contained two crystal phases of c-ZrO2 and Y3Al5O12 after heat-treatment at 1150°C and 1250°C, indicating that Y3Al5O12 could improve the high-temperature phase stability of YSZ.
文章编号:     中图分类号:TG174.4    文献标志码:
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引用文本:
梁和平,王鑫,薛召露,张鑫,汪榆海,钱立宏,张世宏.Y3Al5O12 掺杂对 YSZ 热障涂层微观结构和高温相稳定性的影响[J].热喷涂技术,2021,13(1):43-52.
Liang Heping,Wang Xin,Xue Zhaolu,Zhang Xin,Wang Yuhai,Qian Lihong,Zhang Shihong.Effect of Y3Al5O12 Doping on Microstructure and High-temperature Phase Stability of YSZ Thermal Barrier Coatings[J].Thermal Spray Technology,2021,13(1):43-52.

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