金属热处理 ›› 2021, Vol. 46 ›› Issue (4): 167-170.DOI: 10.13251/j.issn.0254-6051.2021.04.030

• 表面工程 • 上一篇    下一篇

稀土CeO2改性Ni60/50%WC涂层的制备及性能

张蕾涛1,2, 段理2, 刘德鑫1,2, 张伟樯1, 王雪松1, 戴娇燕1, 徐金富1,2   

  1. 1.宁波工程学院 材料科学与化学工程学院, 浙江 宁波 315211;
    2.长安大学 材料科学与工程学院, 陕西 西安 710061
  • 收稿日期:2020-10-02 出版日期:2021-04-25 发布日期:2021-05-08
  • 通讯作者: 徐金富(1965—),男,博士,教授,研究生导师,主要研究方向为激光表面改性,E-mail:xjf7413@sina.com
  • 作者简介:张蕾涛(1995—),男,硕士研究生,主要研究方向为激光表面改性,E-mail:1290231131@qq.com。
  • 基金资助:
    宁波市2025重大专项(2019B10084);宁波市科技计划项目(2016B100023)

Preparation and properties of rare earth CeO2 modified Ni60/50%WC coating

Zhang Leitao1,2, Duan Li2, Liu Dexin1,2, Zhang Weiqiang1, Wang Xuesong1, Dai Jiaoyan1, Xu Jinfu1,2   

  1. 1. School of Materials Science and Chemical Engineering, Ningbo University of Technology, Ningbo Zhejiang 315211, China;
    2. School of Materials Science and Engineering, Chang'an University, Xi'an Shaanxi 710061, China
  • Received:2020-10-02 Online:2021-04-25 Published:2021-05-08

摘要: 通过添加稀土CeO2对Ni60/50%WC涂层进行改性,制备了不同CeO2含量的涂层,研究了CeO2含量对涂层表面裂纹的影响。结果表明,随着CeO2含量的增大,涂层的表面裂纹先逐渐减少,后又逐渐增多,在添加1%CeO2时,Ni60/50%WC涂层无裂纹,且涂层组织均匀且致密,WC粒子圆润,其物相含有γ-(Fe, Ni)、M23C6、M7C3、Fe3W3C、Ni4W、W2C、CeNi5和CeNi2等。与未添加CeO2的涂层相比,在添加1%CeO2后涂层的硬度提高了11.88%,磨损率降低了26%。

关键词: 激光熔覆, 稀土改性, CeO2, WC, 裂纹

Abstract: Through adding rare earth CeO2 to modify the Ni60/50%WC coating and preparing the coatings with different CeO2 content, the influence of CeO2 content on surface cracks of the coating was studied. The results show that with the increase of CeO2 content, the surface cracks of the coating first gradually decreases and then gradually increases. When adding 1% CeO2, the Ni60/50% WC coating has no cracks, the microstructure is homogeneous and dense, which containing round WC particles, γ-(Fe, Ni), M23C6, M7C3, Fe3W3C, Ni4W, W2C, CeNi5 and CeNi2, etc. Compared with the coating without CeO2, the hardness of the coating containing 1%CeO2 increases by 11.88% and the wear rate decreases by 26%.

Key words: laser cladding, rare earth modifying, CeO2, WC, crack

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