Surface hardening of biomedical Ti-29Nb-13Ta-4.6Zr and Ti-6Al-4V ELI by gas nitriding

被引：60

作者：

Nakai, Masaaki ^{[1
]}

Niinomi, Mitsuo ^{[1
]}

Akahori, Toshikazu ^{[1
]}

Ohtsu, Naofumi ^{[1
]}

Nishimura, Hideki ^{[2
]}

Toda, Hiroyuki ^{[2
]}

Fukui, Hisao ^{[3
]}

Ogawa, Michiharu ^{[4
]}

机构：

[1] Tohoku Univ, Mat Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Toyohashi Univ Technol, Dept Prod Syst Engn, Toyohashi, Aichi 4418580, Japan

[3] Aichi Gakuin Univ, Sch Dent, Chikusa Ku, Nagoya, Aichi 4648650, Japan

[4] Daido Steel Co Ltd, R&D Lab, Minami Ku, Nagoya, Aichi 4578545, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 486卷 / 1-2期

基金：

日本学术振兴会;

关键词：

biomaterial; titanium alloy; Ti-29Nb-13Ta-4.6Zr; Ti-6Al-4V; surface hardening; nitriding;

D O I：

10.1016/j.msea.2007.08.065

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and hardness near the surface of a biomedical titanium alloy, Ti-29Nb-13Ta-4.6Zr (TNTZ), subjected to gas nitriding at 1023-1223 K was investigated in comparison with the conventional biomedical Ti-6Al-4V ELI (Ti64). After gas nitriding, the microstructure near the specimen surface was observed by optical microscopy, X-ray diffraction (XRD), Auger electron spectroscopy (AES), and X-ray photoelectron spectroscopy (XPS). In both alloys, two types of titanium nitrides (TiN and Ti(2)N) are formed and the a phase is precipitated by gas nitriding. Furthermore, the oxygen impurity in the gas nitriding atmosphere reacts with the titanium nitrides; thus, TiO(2) is formed at the outermost titanium nitride layer. The surface hardening was also evaluated by Vickers hardness measurement. The Vickers hardness near the surface of TNTZ and Ti64 increases significantly by gas nitriding. (c) 2007 Published by Elsevier B.V.

引用

页码：193 / 201

页数：9

共 21 条

[1] Improvement in fatigue characteristics of newly developed beta type titanium alloy for biomedical applications by thermo-mechanical treatments [J].

Akahori, T ;

Niinomi, M ;

Fukui, H ;

Ogawa, M ;

Toda, H .

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2005, 25 (03) :248-254

[2]

Barin I., 1989, Thermochemical Data of Pure Substances

[3] SURFACE CHARACTERIZATION OF PLASMA-NITRIDED TITANIUM - AN XPS STUDY [J].

BERTOTI, I ;

MOHAI, M ;

SULLIVAN, JL ;

SAIED, SO .

APPLIED SURFACE SCIENCE, 1995, 84 (04) :357-371

[4] OXIDATION MECHANISM OF TITANIUM NITRIDE IN OXYGEN [J].

DESMAISON, J ;

LEFORT, P ;

BILLY, M .

OXIDATION OF METALS, 1979, 13 (06) :505-517

[5] Enhanced wear resistance of titanium surfaces by a new thermal oxidation treatment [J].

Dong, H ;

Bell, T .

WEAR, 2000, 238 (02) :131-137

[6]

Hanawa T, 2001, STRUCTURAL BIOMATERIALS FOR THE 21ST CENTURY, P145

[7] A STUDY OF THE IMPROVED WEAR PERFORMANCE OF NITROGEN-IMPLANTED TI-6AL-4V [J].

HUTCHINGS, R ;

OLIVER, WC .

WEAR, 1983, 92 (01) :143-153

[8] Aging behavior of the Ti-29Nb-13Ta-4.6Zr new beta alloy for medical implants [J].

Ikeda, M ;

Komatsu, SY ;

Sowa, I ;

Niinomi, M .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2002, 33 (03) :487-493

[9]

KOFSTAD P, 1972, NONSTOICHIOMETRY DIF, P137

[10] Design and mechanical properties of new β type titanium alloys for implant materials [J].

Kuroda, D ;

Niinomi, M ;

Morinaga, M ;

Kato, Y ;

Yashiro, T .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 243 (1-2) :244-249

← 1 2 3 →