摘要
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 HV_(0.2)) are 1.26 times higher than that of the C276 alloy(356 HV_(0.2)).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.
作者
黄昭祯
张志臣
澹台凡亮
田洪芳
顾振杰
郗涛
钱铸
方艳
Zhao-Zhen Huang;Zhi-Chen Zhang;Fan-Liang Tantai;Hong-Fang Tian;Zhen-Jie Gu;Tao Xi;Zhu Qian;Yan Fang(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China;Shandong Energy Heavy Equipment Group Dazu Remanufacturing Co.,Ltd,Xintai 271219,China;Laser Technology Institute,Tiangong University,Tianjin 300387,China;Tianjin Zhujin Technology Development Co.,Ltd,Tianjin 300230,China)
基金
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)
the Scientific Research Program of Tianjin Municipal Education Commission,China(Grant No.2018KJ206)。
