中国机械工程 ›› 2021, Vol. 32 ›› Issue (15): 1854-1860.DOI: 10.3969/j.issn.1004-132X.2021.15.011

• 增材制造 • 上一篇    下一篇

双送粉激光熔覆CoCrAlSiY/YSZ梯度涂层微观组织及热振性能

王涛1;朱磊1;唐杰1;王浩2;吴军1   

  1. 1.中国民航大学航空工程学院,天津,300300
    2.中国民航大学工程技术训练中心,天津,300300
  • 出版日期:2021-08-10 发布日期:2021-09-08
  • 通讯作者: 王浩(通信作者),男,1985年生,副教授。研究方向为航空部件数字化制造与修复、激光制造技术。E-mail:hbgdwh@vip.126.com。
  • 作者简介:王涛,男,1979年生,教授、博士。研究方向为激光熔覆、增材制造、数字化制造等。E-mail:wangtaotdme@163.com。
  • 基金资助:
    国家自然科学基金民航联合基金(U1633104);
    中央高校科研基本业务费专项资金(3122017017);
    天津市教委科研计划(2019KJ119);
    中国民航大学研究生科技创新项目(10502729)

Microstructure and Thermal Shock Properties of CoCrAlSiY/YSZ Gradient Coatings by Double-powder-feeding Laser Cladding#br#

WANG Tao1;ZHU Lei1;TANG Jie1;WANG Hao2;WU Jun1   

  1. 1.College of Aeronautical Engineering,Civil Aviation University of China,Tianjin,300300
    2.Engineering Technology Training Center,Civil Aviation University of China,Tianjin,300300
  • Online:2021-08-10 Published:2021-09-08

摘要: 采用双送粉方式,利用激光熔覆技术在TC4基体上制备CoCrAlSiY/Y2O3-ZrO2(YSZ)梯度涂层。对CoCrAlSiY/YSZ梯度涂层的微观组织、元素分布、显微硬度及热振性能进行了分析与研究,结果表明:梯度涂层与基体结合紧密,各梯度亚层之间不存在明显的界面,梯度涂层无明显裂纹,形成了良好的冶金结合;随着YSZ含量的提高,梯度涂层显微硬度呈梯度变化。在750 ℃下进行了不同循环周期的热振试验,试验结果表明CoCrAlSiY/YSZ梯度涂层具有一定的抗热振性。

关键词: 激光熔覆, 梯度涂层, 显微硬度, 热振性能

Abstract: CoCrAlSiY/Y2O3-ZrO2(YSZ)gradient coatings were prepared on TC4 substrates by double-powder-feeding laser cladding. The microstructure, element distribution, microhardness and thermal shock properties of the CoCrAlSiY/YSZ gradient coatings were analyzed. The results show that the gradient coatings are firmly bonded to the substrates. There are no obvious interfaces between the gradient sublayers and cracks in the coatings, indicating that a good metallurgical bond is formed. The microhardness of the gradient coatings change progressively with the increase of YSZ contents. The thermal shock tests at 750 ℃ in different cycle periods show that the CoCrAlSiY/YSZ gradient coating have certain thermal shock resistance. 

Key words: laser cladding, gradient coating, microhardness, thermal shock performance

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