Corrosion resistance of liquid zinc of FeB/Co cermet coating deposited by AC-HVAF

被引：0
|
作者：
Ye P. [1 ,2 ]
Yin F.-C. [1 ,2 ]
Liu Y. [1 ,2 ,3 ]
Ouyang X.-M. [1 ,2 ]
Xie X.-L. [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Xiangtan University, Xiangtan
[2] Key Laboratory of Materials Design and Preparation Technology of Hunan Province, Xiangtan University, Xiangtan
[3] State Key Laboratory of Powder Metallurgy, Central South University, Changsha
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2018年 / 28卷 / 04期
基金：
中国国家自然科学基金;
关键词：
AC-HVAF; Coating; Corrosion of liquid zinc; FeB/Co;
D O I：
10.19476/j.ysxb.1004.0609.2018.04.17
中图分类号：
学科分类号：
摘要：
FeB/Co cermet powder was prepared by the sintered and crushed process. The effects of Co on the porosity, hardness, adhesion, thermal shock resistance and the abrasive wear persistance of the FeB/Co coating deposited by AC-HVAF were investigated. Both the corrosion condition and failure mechanism of FeB/Co coating in the molten zinc were studied detailedly. The results show that the powder density increases with increasing Co content. With Co content ranging from 8% to 17% (mass fraction), the porosity of the coating reduces while the adhesive strength is improved, both the hardness and the shock resistance firstly increase and then decrease. In addition, compared with the base material of 316L stainless steel, the FeB/Co coating shows excellent corrosion resistance in liquid zinc and abrasive wear property. Because the wetting property of FeB/Co coating in liquid zinc is poor, FeB/Co coating shows high durability in it. Also, the coating with 12% Co has the best corrosion resistance compared with those coatings with 8% Co and 17% Co, the macroscopic crack emerges with the passage of time, which results in the formation of brittleness (Fe,Co)Zn13 phase, and liquid zinc will lead to peeling the coating and then drifting into the liquid zinc, as a result, the coating is failed. © 2018, Science Press. All right reserved.
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页码：782 / 791
页数：9
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