Enhanced corrosion and wear resistance properties of carbon fiber reinforced Ni-based composite coating by laser cladding

被引：204

作者：

Lei, Jianbo ^{[1
]}

Shi, Chuan ^{[1
]}

Zhou, Shengfeng ^{[1
]}

Gu, Zhenjie ^{[1
]}

Zhang, Lai-Chang ^{[2
]}

机构：

[1] Tianjin Polytech Univ, Laser Technol Inst, Tianjin 300387, Peoples R China

[2] Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Perth, WA 6027, Australia

来源：

SURFACE & COATINGS TECHNOLOGY | 2018年 / 334卷

基金：

中国国家自然科学基金;

关键词：

Laser cladding (LC); Carbon fibers; Nickel based coating; Electrochemical corrosion; Wear mechanisms; COPPER-MATRIX COMPOSITES; MELTED TI-6AL-4V ALLOY; MICROSTRUCTURAL EVOLUTION; MECHANICAL-PROPERTIES; GRAIN-SIZE; BEHAVIOR; WC; NANOTUBE; OXIDE; LAYER;

D O I：

10.1016/j.surfcoat.2017.11.051

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

To enhance the wear resistance and corrosion resistance of Ni-based coatings, carbon fibers reinforced nickel based composite coatings (CFs/Ni) were fabricated on the surface of 1Cr13 stainless steel by laser cladding (LC). The microstructure characteristics, microhardness, wear and corrosion performances of the composite coatings were investigated. The results show that CFs can effectively improve the corrosion and wear resistances of Ni-based coatings. With increasing laser scanning speed, the morphology of CFs in composite coatings is more integral and the corrosion and wear resistances of the composite coatings are improved. Especially, when laser scanning speed is increased to 8 mm/s, the average microhardness of the composite coating reaches up to 405 HV0.2, which is about 1.3 times higher than that of Ni-based coating. Moreover, the corrosion current density and the wear rate of the composite coating are only 7% and 55% of those of the Ni-based coating, respectively, which is attributed to the good properties and homogeneous distribution of CFs and finer microstructure of composite coating.

引用

页码：274 / 285

页数：12

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