Microstructure and Performance of NiTi-Based Intermetallic Compound Coatings by Laser Melting Deposition

被引：2

作者：

Dai Xiaoqin ^{[1
]}

Shi Quanju ^{[1
]}

Zhao Yu ^{[1
]}

Xu Yongbo ^{[1
]}

Lei Jianbo ^{[1
]}

Zhou Shengfeng ^{[1
]}

机构：

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

来源：

CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG | 2018年 / 45卷 / 07期

关键词：

laser technique; laser melting deposition; intermetallic compound; corrosion resistance; pitting; titanium alloys;

D O I：

10.3788/CJL201845.0702008

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The NiTi-based intermetallic compound coating is in-situ synthesized on the surface of Ti-6Al-4V (TC4) substrate by the laser melting deposition (LMP) technique. The microstructure characteristics, microhardness and electrochemical corrosion resistance of this coating arc investigated. The research results show that, this coating is mainly composed of the intermetallic compounds as NiTi, Ni3Ti, NiTi2, Ni-4 Ti-3 and so on. The microhardness of this coating is up to 800 HV, which is about 1. 3 times higher than that of the TC4 substrate. Inhomogeneous passive films arc formed on the surface of the coating and there also exist many pittings, and thus there is a slight decrease in corrosion resistance of this coating compared with that of the TC4 substrate.

引用

页数：8

共 24 条

[1] Improved corrosion behaviour of electron beam melted Ti-6Al-4V alloy in phosphate buffered saline [J].

Bai, Yun ;

Gai, Xin ;

Li, Shujun ;

Zhang, Lai-Chang ;

Liu, Yujing ;

Hao, Yulin ;

Zhang, Xing ;

Yang, Rui ;

Gao, Yongbo .

CORROSION SCIENCE, 2017, 123 :289-296

[2] Titanium alloys and processing for high speed aircraft [J].

Brewer, WD ;

Bird, RK ;

Wallace, TA .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 243 (1-2) :299-304

[3] Laser alloying of zinc with aluminum: Solidification structures [J].

Carvalho, PA ;

Vilar, R .

SURFACE & COATINGS TECHNOLOGY, 1997, 91 (03) :158-166

[4] Effect of TiNi in dry sliding wear of laser melt deposited Ti2Ni/TiNi alloys [J].

Gao, F. ;

Wang, H. M. .

MATERIALS CHARACTERIZATION, 2008, 59 (09) :1349-1354

[5] Corrosion behaviour of thermal sprayed nitinol coatings [J].

Guilemany, J. M. ;

Cinca, N. ;

Dosta, S. ;

Benedetti, A. V. .

CORROSION SCIENCE, 2009, 51 (01) :171-180

[6] Corrosion resistance of Ti and Ti-Pd alloy in phosphate buffered saline solutions with and without H2O2 addition [J].

Handzlik, P. ;

Fitzner, K. .

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2013, 23 (03) :866-875

[7] Nanostructured Ti-based multi-component alloys with potential for biomedical applications [J].

He, G ;

Eckert, J ;

Dai, QL ;

Sui, ML ;

Loser, W ;

Hagiwara, M ;

Ma, E .

BIOMATERIALS, 2003, 24 (28) :5115-5120

[8] Corrosion behaviors of TiNi/Ti2Ni matrix coatings in the environment rich in Cl ions [J].

Hu, L. F. ;

Li, J. ;

Tao, Y. F. ;

Lv, Y. H. .

SURFACE & COATINGS TECHNOLOGY, 2017, 311 :295-306

[9]

Jin J., 1988, ACTA METALL SIN, V24, P66

[10]

Li L Q, 2017, CHINESE J LASERS, V44

← 1 2 3 →