Preparation and characterization of Cr/CrC multilayer on γ-TiAl alloy by the double glow plasma surface alloying technology

被引：37

作者：

Chen Xiaohu ^{[1
]}

Zhang Pingze ^{[1
]}

Wei Dongbo ^{[1
]}

Ding Feng ^{[1
]}

Li Fengkun ^{[1
]}

Wei Xiangfei ^{[1
]}

Ma Shijian ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Nanjing 210016, Jiangsu, Peoples R China

来源：

MATERIALS LETTERS | 2018年 / 215卷

关键词：

Cr/CrC multilayer; Double glow plasma surface alloying technology; Wear; Oxidation resistance; Metallurgy; OXIDATION BEHAVIOR; CHROMIUM CARBIDE; COATINGS; TITANIUM; MICROSTRUCTURE; STEEL;

D O I：

10.1016/j.matlet.2017.12.104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hard ceramic and ductile metal materials combined in multilayered structures provide superior wear and oxidation resistance to the single layer, which has been applied extensively to components subjected to high-temperature oxidation and wear. In this paper, the oxidation and wear properties of Cr/CrC multilayer coating obtained on c-TiAl alloy by an emerging technology, that is double glow plasma surface alloying technology, were reported. Sliding wear and oxidation tests were performed on Cr/CrC multilayer as well as on chromising reference coating. The friction coefficients of Cr/CrC multilayer at room and high temperature were 0.2 and 0.175 respectively, about only 22.2% and 35% of the c-TiAl substrate. The Cr/CrC multilayer oxidized approximately parabolically, with lower oxidation rate than the chromising coating. The oxidation mechanism of the Cr/CrC multilayer was mainly dominated by carbide oxidation and dense Cr2O3 scale oxide development. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：292 / 295

页数：4

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