High temperature oxidation behavior of Ti-Ni-Hf shape memory alloy

被引：28

作者：

Kim, Kyong Min ^{[1
,2
]}

Yeom, Jong Taek ^{[1
]}

Lee, Hak-Sung ^{[1
]}

Yoon, Seog-Young ^{[2
]}

Kim, Jeoung Han ^{[1
,3
]}

机构：

[1] Korea Inst Mat Sci, Light Met Div, Chang Won 642831, South Korea

[2] Pusan Natl Univ, Sch Mat Sci & Engn, Pusan 609735, South Korea

[3] Hanbat Natl Univ, Dept Adv Mat Engn, Taejon 305719, South Korea

来源：

THERMOCHIMICA ACTA | 2014年 / 583卷

关键词：

Shape memory alloy; Oxidation; Hafnium; Thermogravimetric analyses; Diffusion;

D O I：

10.1016/j.tca.2014.02.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The effect of Hf addition on the high temperature oxidation behavior and oxide structure of Ti-49Ni-12Hf high temperature shape memory alloy was investigated. Thermogravimetric analyses (TGA) were conducted at temperatures ranging from 800 to 1000 degrees C for 100 h in dry air.The kinetic curves of the oxidation were measured by TGA, and then the microstructure and chemical elements distribution in the different regions of the specimens were analyzed by SEM/EDS and XRD after oxidation. The experimental results showed that the oxidation rate in the primary stage was high, and then the mass-gaining-rate decreased gradually with the oxidation time. The oxidation behavior of Ti-50.5Ni alloy obeys parabolic rate law for whole oxidation period while the Ti-49Ni-12Hf alloy showed initially parabolic rate law followed by linear rate law. The Hf-rich oxide layer that formed beneath the outer oxide layer can impede the diffusion of Ti ions, resulting in a notable improvement of oxidation resistance of Ti-49Ni-12Hf alloy at high temperature. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1 / 7

页数：7

共 16 条

[1] A study on the mechanical behavior and microstructure of NiTiHf shape memory alloy under hot deformation [J].

Belbasi, Majid ;

Salehi, Mohammad T. ;

Mousavi, Seyed Ali Asghar Akbari ;

Ebrahimi, Seyed Mohammad .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 560 :96-102

[2]

Birks N, 2006, INTRODUCTION TO THE HIGH-TEMPERATURE OXIDATION OF METALS, 2ND EDITION, P39

[3] Oxidation behavior of equiatomic TiNi alloy in high temperature air environment [J].

Chu, CL ;

Wu, SK ;

Yen, YC .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 216 (1-2) :193-200

[4] High-temperature shape memory alloys some recent developments [J].

Firstov, GS ;

Van Humbeeck, J ;

Koval, Y .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 378 (1-2) :2-10

[5] Oxygen diffusion and reactions in Hf-based dielectrics [J].

Goncharova, L. V. ;

Dalponte, M. ;

Starodub, D. G. ;

Gustafsson, T. ;

Garfunkel, E. ;

Lysaght, P. S. ;

Foran, B. ;

Barnett, J. ;

Bersuker, G. .

APPLIED PHYSICS LETTERS, 2006, 89 (04)

[6] High-temperature oxidation of Cu-30 wt.% Ni-15 wt.% Fe [J].

Haugsrud, R ;

Norby, T ;

Kofstad, P .

CORROSION SCIENCE, 2001, 43 (02) :283-299

[7]

Hirnyj S. I., 2012, PSCIMFS10

[8] Characterization of HfO2 dielectric films with low energy SIMS [J].

Jiang, Z. X. ;

Kim, K. ;

Lerma, J. ;

Sieloff, D. ;

Tseng, H. ;

Hegde, R. I. ;

Luo, T. Y. ;

Yang, J. Y. ;

Triyoso, D. H. ;

Tobin, P. J. .

APPLIED SURFACE SCIENCE, 2006, 252 (19) :7172-7175

[9]

Kekare S.A., 1993, OXIDATION HIGH TEMPE, P325

[10]

Kocich R., 2013, Shape Memory Alloys - Processing, Characterization and Applications

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