中国物理B ›› 2021, Vol. 30 ›› Issue (1): 16802-.doi: 10.1088/1674-1056/abb223

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  • 收稿日期:2020-06-11 修回日期:2020-08-02 接受日期:2020-08-25 出版日期:2020-12-17 发布日期:2020-12-23

Effects of WC-Co reinforced Ni-based alloy by laser melting deposition: Wear resistance and corrosion resistance

Zhao-Zhen Huang(黄昭祯)1, Zhi-Chen Zhang(张志臣)1,†, Fan-Liang Tantai(澹台凡亮)2, Hong-Fang Tian(田洪芳)2, Zhen-Jie Gu(顾振杰)3, Tao Xi(郗涛)1, Zhu Qian(钱铸)4, and Yan Fang(方艳)1,‡   

  1. 1 School of Mechanical Engineering, Tiangong University, Tianjin 300387, China; 2 Shandong Energy Heavy Equipment Group Dazu Remanufacturing Co., Ltd, Xintai 271219, China; 3 Laser Technology Institute, Tiangong University, Tianjin 300387, China; 4 Tianjin Zhujin Technology Development Co., Ltd, Tianjin 300230, China
  • Received:2020-06-11 Revised:2020-08-02 Accepted:2020-08-25 Online:2020-12-17 Published:2020-12-23
  • Contact: †Corresponding author. E-mail: Zhangzhichen66@sina.com ‡Corresponding author. E-mail: yanfang1108@163.com
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB1103604), the Industrial Transformation and Upgrading Funds of the Ministry of Industry and Information Technology, China (Grant No. RZJC-XM19-004), the Tianjin Municipal Special Program of Talents Development for Excellent Youth Scholars, China (Grant No. TJTZJH-QNBJRC-2-15), the National Natural Science Foundation of China (Grant No. 61475117), and the Scientific Research Program of Tianjin Municipal Education Commission, China (Grant No. 2018KJ206).

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Abstract: WC-Co reinforced C276 alloy composite coatings are fabricated on Q235 steel by laser melting deposition. The microstructure, hardness, wear performance, and electrochemical corrosion behavior of composite coating are studied. The results show that WC-Co particles are mostly uniformly distributed in the coating and provide favorable conditions for heterogeneous nucleation. The microstructure of C276/WC-Co composite coatings is composed of γ-Ni solid solution dendrites and MoNi solid solution eutectics. The WC-Co particles can effectively improve the hardness and wear resistance of C276 alloy. The average hardness of the composite coating containing 10-wt% WC-Co (447 HV0.2) are 1.26 times higher than that of the C276 alloy (356 HV0.2). The wear rate of composite coating containing 10-wt% WC-Co (6.95 × 10 -3 mg/m) is just 3.5% of that of C276 coating (196.23× 10 -3 mg/m). However, comparing with Hastelloy C276，the corrosion resistance of C276/WC-Co composite coating decreases.

Key words: WC-Co, wear resistance, corrosion resistance, laser melting deposition

中图分类号:  (Metals and alloys)

  • 68.35.bd
81.05.Je (Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)) 81.40.Pq (Friction, lubrication, and wear) 82.45.Bb (Corrosion and passivation)