大气等离子喷涂纳米粉体热障涂层及其抗热震性能研究

doi:10.3969/j.issn.1001-1935.2025.04.003

耐火材料 ›› 2025, Vol. 59 ›› Issue (4): 289-296.DOI: 10.3969/j.issn.1001-1935.2025.04.003

大气等离子喷涂纳米粉体热障涂层及其抗热震性能研究

张松婷¹⁾, 赵世贤¹⁾, 李虹屿¹⁾, 李红霞¹⁾, 司瑶晨¹⁾, 李凌锋¹⁾, 刘广华²⁾

1)中钢集团洛阳耐火材料研究院有限公司先进耐火材料全国重点实验室河南洛阳 471039
2)中国联合重型燃气轮机技术有限公司北京 100045

收稿日期:2024-11-15 发布日期:2025-08-18
通讯作者: 赵世贤,男,1981年生,博士,正高级工程师。E-mail:zhaosx@lirrc.com
作者简介:张松婷:男,1999年生,硕士。E-mail:zhangsongting2021@163.com
基金资助:
国家重点研发计划(2023YFB3711200)。

Thermal barrier coatings fabricated by atmospheric plasma spraying nano powder and their thermal shock resistance

Zhang Songting, Zhao Shixian, Li Hongyu, Li Hongxia, Si Yaochen, Li Lingfeng, Liu Guanghua

First author's address:State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China

Received:2024-11-15 Published:2025-08-18

摘要/Abstract

摘要： 基于超音速火焰喷涂的NiCoCrAlYTa黏结层,采用大气等离子喷涂技术制备纳米8%(w)氧化钇部分稳定氧化锆陶瓷层,探索热障涂层结构中团聚纳米颗粒的调控方式及其对涂层性能的影响。通过调整喷涂距离、基体温度和枪移动速度来实现涂层的结构调控,借助Image J分析孔隙率和未熔区域相对含量,采用对偶拉伸法和水淬法分别评价了NiCoCrAlYTa+YSZ涂层的结合强度和抗热震性能。结果表明,当送粉量为25 g·min^-1,喷涂距离为115 mm,枪移动速度为500 mm·s^-1,基体温度调控为200～300 ℃时,涂层能够获得高含量的未熔颗粒团聚体和合适的孔隙率。虽然该工艺下所获得的涂层结合强度最低,约为26.8 MPa,但抗水冷热震性能最佳,表面失效面积为20%时循环寿命可达到43次。

关键词: 热障涂层, 大气等离子喷涂, 氧化钇部分稳定氧化锆, 结合强度, 抗热震性能

Abstract: Based on the supersonic flame sprayed NiCoCrAlYTa bonding coating,8 mass% nano yttria-partially stabilized zirconia ceramic coatings were prepared by atmospheric plasma spraying to explore the regulation of agglomerated nano particles in the thermal barrier coating structure,and their influence on the coating performance.The structural regulation of the coatings was achieved by adjusting the spraying distance,substrate temperature and gun moving speed.The porosity and relative content of the unfused regions of the coatings were analyzed through Image J.The bonding strength and thermal shock resistance of the NiCoCrAlYTa+YSZ coatings were evaluated by the pairwise tensile method and water quenching method,respectively.The results show that the coating has high contents of unfused particle agglomerates and a suitable porosity when the powder delivery is 25 g·min^-1,the spraying distance is 115 mm,the gun moving speed is 500 mm·s^-1,and the substrate temperature is regulated at 200-300 ℃.Although the coating shows the lowest bonding strength by this process,about 26.8 MPa,it has the best resistance to thermal shock by water quenching,reaching 43 cycles at a surface failure area of 20%.

Key words: thermal barrier coatings, atmospheric plasma spraying, yttria-partially stabilized zirconia, bonding strength, thermal shock resistance

中图分类号:

TG174.442

张松婷, 赵世贤, 李虹屿, 李红霞, 司瑶晨, 李凌锋, 刘广华. 大气等离子喷涂纳米粉体热障涂层及其抗热震性能研究[J]. 耐火材料, 2025, 59(4): 289-296.

Zhang Songting, Zhao Shixian, Li Hongyu, Li Hongxia, Si Yaochen, Li Lingfeng, Liu Guanghua. Thermal barrier coatings fabricated by atmospheric plasma spraying nano powder and their thermal shock resistance[J]. Refractories, 2025, 59(4): 289-296.

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大气等离子喷涂纳米粉体热障涂层及其抗热震性能研究

Thermal barrier coatings fabricated by atmospheric plasma spraying nano powder and their thermal shock resistance

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