马伯乐,马文,黄威,白玉,贾瑞灵,董红英.大气等离子喷涂SrZrO3热障涂层工艺与性能的研究[J].装备环境工程,2019,16(1):17-23. MA Bo-le,MA Wen,HUANG Wei,BAI Yu,JIA Rui-ling,DONG Hong-ying.Process and Properties of SrZrO3 Thermal Barrier Coating Prepared by Atmospheric Plasma Spray[J].Equipment Environmental Engineering,2019,16(1):17-23.
大气等离子喷涂SrZrO3热障涂层工艺与性能的研究
Process and Properties of SrZrO3 Thermal Barrier Coating Prepared by Atmospheric Plasma Spray
投稿时间:2018-06-12  修订日期:2019-01-25
DOI:10.7643/ issn.1672-9242.2019.01.004
中文关键词:  大气等离子喷涂  SrZrO3  热障涂层  相变
英文关键词:atmospheric plasma spraying  SrZrO3  thermal barrier coating  phase transition
基金项目:国家自然基金(No. 51462026, 51672136);内蒙古自然基金(No. 2017MS0503)
作者单位
马伯乐 1.内蒙古工业大学 a.材料科学与工程学院,b.化工学院,呼和浩特 010051 
马文 1.内蒙古工业大学 a.材料科学与工程学院,b.化工学院,呼和浩特 010051 
黄威 1.内蒙古工业大学 a.材料科学与工程学院,b.化工学院,呼和浩特 010051 
白玉 1.内蒙古工业大学 a.材料科学与工程学院,b.化工学院,呼和浩特 010051 
贾瑞灵 1.内蒙古工业大学 a.材料科学与工程学院,b.化工学院,呼和浩特 010051 
董红英 1.内蒙古工业大学 b.化工学院,呼和浩特 010051;2.内蒙古自治区薄膜与涂层重点实验室,呼和浩特 010051 
AuthorInstitution
MA Bo-le 1. a. School of Materials Science and Engineering, b. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China 
MA Wen 1. a. School of Materials Science and Engineering, b. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China 
HUANG Wei 1. a. School of Materials Science and Engineering, b. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China 
BAI Yu 1. a. School of Materials Science and Engineering, b. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China 
JIA Rui-ling 1. a. School of Materials Science and Engineering, b. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China 
DONG Hong-ying 1. b. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;2. Inner Mongolia Key Laboratory of Thin Film and Coatings Technology, Hohhot 010051, China 
摘要点击次数:
全文下载次数:
中文摘要:
      目的 探究大气等离子喷涂制备SrZrO3涂层的融化状态最好、沉积效率最高的最优工艺,研究SrZrO3热障涂层的热物理性能及其热循环寿命。方法 采用大气等离子喷涂技术制备SrZrO3热障涂层,通过设计田口实验研究不同的喷涂工艺对粉末融化状况和沉积效率的影响,采用扫描电镜观察涂层融化状况等。采用优化后的工艺制备厚涂层,使用高温热膨胀仪和激光导热仪测试涂层的热膨胀系数、抗烧结性能以及热扩散系数。结果 当喷涂距离为90 mm时,SrZrO3涂层沉积效率最高,最大单遍喷涂厚度达到15.3 μm;当喷涂距离为100 mm时,涂层的熔化状态最好。制备态SrZrO3涂层中出现第二相t-ZrO2,1600 ℃热处理条件下,随着热处理时间的延长,t-ZrO2逐渐消失,热处理360 h后,m-ZrO2的质量分数逐渐增加至27%。SrZrO3涂层热膨胀系数为(8~10)×10?6 K?1(200~1400 ℃),随着热处理时间的延长,涂层的热膨胀系数逐渐降低。SrZrO3涂层的热导率随着热处理时间的延长先增加后减小,热处理360 h后SrZrO3涂层的热导率为1.82 W/(m?K)(1000 ℃)。SrZrO3/YSZ双层涂层炉内循环548次后,涂层整体脱落。结论 SrZrO3涂层最优喷涂工艺为电流550 A、氩气流量40 L/min、氢气流量10 L/min、喷涂距离100 mm、功率35.8 kW。随着热处理时间的延长,涂层中的第二相m-ZrO2能够降低涂层的热膨胀系数和热导率。SrZrO3/YSZ双层涂层的循环次数远高于SrZrO3单层涂层。
英文摘要:
      Objective To explore the optimum spray parameters of the SrZrO3 coating prepared by atmospheric plasma spray to obtain the better melted coating with higher deposition efficiency and research the thermophysical properties and thermal cycling behavior of the SrZrO3 coatings. Methods The SrZrO3 thermal barrier coatings were prepared by atmospheric plasma spray (APS). Taguchi design of experiments (DOE) was employed to investigate the effect of different spray parameters on powder melting and coating deposition efficiency; and a scanning electron microscopy (SEM) was used to analyze the melting status of the SrZrO3 coating. Thick coating was prepared with the optimized spray parameters. And the thermal expansion coefficients, sintering shrinkage kinetics and thermal diffusivities of the SrZrO3 coating were measured with high-temperature dilatometer and laser flash method, respectively. Results The highest deposition efficiency of the SrZrO3 coating was obtained at a spray distance of 90 mm, with a maximum single-pass coating thickness of 15.3 μm; while the coating melted more completely at a spray distance of 100 mm. The content of the secondary phase t-ZrO2 developed in the as-sprayed SrZrO3 decreased and disappeared gradually upon heat-treatment at 1600 ℃; while the content of m-ZrO2 gradually increased to 27 wt.% after heat-treatment at 1600 ℃ for 360 h. The thermal expansion coefficients of the SrZrO3 coating was 8-10×10?6 K?1(200 ℃- 1400 ℃), that decreased gradually upon heat-treatment. The thermal conductivity of the SrZrO3 coating increased first and then decreased with the prolonged heat-treatment time, that was 1.82 W?m?1?K?1 (1000 ℃) after heat-treatment for 360 h. The furnace cycling lifetime of the SrZrO3/YSZ double ceramic layer coating was 548 cycles with the fully spallation of the coating. Conclusion The optimum spray parameters of the SrZrO3 coating are as follows: arc current 550 A, argon flow rate 40 L/min, hydrogen flow rate 10 L/min, spray distance 100 mm, power 35.8 kW. The thermal expansion coefficient and thermal conductivity of the SrZrO3 coating decrease with an increase of the secondary phase m-ZrO2 with the prolonged heat-treatment time. The thermal cycling lifetime of the SrZrO3/YSZ double ceramic layer coating is much longer than that of the SrZrO3 single ceramic layer coating.
查看全文  查看/发表评论  下载PDF阅读器
关闭

关于我们 | 联系我们 | 投诉建议 | 隐私保护 | 用户协议

您是第11709475位访问者    渝ICP备15012534号-5

版权所有:《装备环境工程》编辑部 2014 All Rights Reserved

邮编:400039     电话:023-68792835    Email: zbhjgc@163.com

视频号 公众号