Synthesis and characterisation of a new superelastic Ti-25Ta-25Nb biomedical alloy

被引：106
作者：
Bertrand, E. [1 ]
Gloriant, T. [1 ]
Gordin, D. M. [1 ]
Vasilescu, E. [2 ]
Drob, P. [2 ]
Vasilescu, C. [2 ]
Drob, S. I. [2 ]
机构：
[1] INSA Rennes, CNRS, UMR SCR Chim Met 6226, F-35043 Rennes, France
[2] Inst Phys Chem Ilie Murgulescu, Bucharest 060021, Romania
来源：
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS | 2010年 / 3卷 / 08期
关键词：
Titanium alloy; Microstructure; Mechanical properties; Corrosion tests; TITANIUM-ALLOYS; SHAPE-MEMORY; TI-ALLOYS; BIOCOMPATIBILITY; TRANSFORMATION; MARTENSITE; BIOFLUIDS; ELEMENTS; TA;
D O I：
10.1016/j.jmbbm.2010.06.007
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
In this study, a new Ti-25Ta-25Nb (mass%) beta alloy was synthesised by cold crucible semi-levitation melting. This technique made it possible to obtain homogeneous ingots although the elements used have very different melting points. After melting, a thermo-mechanical treatment was applied in order to obtain a perfectly recrystallised beta microstructure. For this alloy composition, the tensile tests showed a very low Young's modulus associated with an important super-elastic behaviour, which contributes to decrease the elastic modulus under stress and to increase the recoverable strain. On the other hand, the corrosion tests, which were carried out in a neutral Ringer solution, indicated a corrosion resistance higher than that of the commercially pure CP Ti alloy. These results show that this new alloy possesses all the characteristics necessary for its long-term use in medical implants. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：559 / 564
页数：6
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