Improved hardness and corrosion resistance of iron by Ti/TiN multilayer coating and plasma nitriding duplex treatment

被引:24
作者
Chen, Chang-Zi [1 ,2 ]
Li, Qiang [1 ]
Leng, Yong-Xiang [1 ]
Chen, J. Y. [1 ]
Zhang, Peng-Cheng [3 ]
Bai, Bin [3 ]
Huang, Nan [1 ]
机构
[1] SW Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Peoples R China
[2] Guizhou Aerosp Precis Prod Co Ltd, Zunyi 536006, Guizhou, Peoples R China
[3] State Key Lab Phys Chem Surfaces, Jiangyou 621700, Sichuan, Peoples R China
关键词
Plasma nitriding; Plasma immersion ion implantation; Magnetron sputtering; Corrosion resistance; TiN; Adhesion; TRIBOLOGICAL PROPERTIES; MECHANICAL-PROPERTIES; SURFACE-PROPERTIES; ION-IMPLANTATION; TIN COATINGS; FILMS;
D O I
10.1016/j.surfcoat.2010.03.017
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A duplex treatment of plasma nitriding followed by deposition of a Ti/TiN multilayer coating was performed on commercial pure iron. Plasma nitriding was carried out using high frequency low bias voltage plasma immersion ion implantation (HLPIII), and the Ti/TiN multilayer films were deposited using unbalanced magnetron sputtering on the nitrided iron surface. The plasma nitriding layer was 4 mu m thick, consisting of mainly epsilon-Fe3N and gamma-Fe4N. The microhardness of the iron with Ti/TiN multilayer coating + plasma nitriding duplex treatment was over 18 GPa, somewhat harder than that of iron with a Ti/TiN multilayer film but without plasma nitriding, and almost 5 times that of the (only) nitrided iron. The film-cohesion for Ti/TiN multilayer film on the nitrided substrate was much better than that on the substrate without nitriding treatment. Comparing with the Ti/TiN film on bare iron, the samples with Ti/TiN multilayer coating + plasma nitriding duplex treatment have better corrosion resistance. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:3082 / 3086
页数:5
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