Influence of Oxidation on the High-Temperature Tribological Properties of Tungsten-Carbide-Reinforced Cu-Ni-Mn Composite Coatings

被引：4

作者：

Yang, Shuai ^{[1
]}

Meng, Xuewei ^{[1
]}

Liu, Jun ^{[1
]}

Gui, Chibin ^{[1
]}

Xia, Weisheng ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2019年 / 50A卷 / 04期

关键词：

WEAR-RESISTANCE; BEHAVIOR; MICROSTRUCTURE; ALLOY; WC; FRICTION; MECHANISMS;

D O I：

10.1007/s11661-019-05126-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cu-Ni-Mn alloy coatings and their associated composite coatings reinforced with tungsten-carbide (WC) particles were deposited onto a steel substrate using the manual oxy-acetylene weld hardfacing method. The sliding wear behaviors in air at 350 degrees C were investigated. The relative wear-resistance values of the as-deposited and the age-hardened WC/Cu-Ni-Mn hardfacing coatings with regard to the commercial Fe-Cr-C hardfacing coatings at 350 degrees C were 1.90 and 2.39, respectively. The excellent sliding wear-resistance performance of the WC/Cu-Ni-Mn hardfacing coatings was mainly ascribed to the hard and thermally stable WC particles embedded uniformly in the Cu-Ni-Mn metal matrix. The high-temperature wear mechanisms of the coatings were determined to be mainly abrasion and adhesion. The oxidation of the metal matrix improved sliding wear-resistance performance at high temperatures. Compared to the results at room temperature, the friction coefficients of the coating decreased, whereas the sliding wear volume loss increased slightly under dry sliding wear conditions at high temperatures.

引用

页码：1936 / 1942

页数：7

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