Micro-hardness and elastic modulus of Ti-30Nb-8Zr-2Mo alloy for dental implants
10.3969/j.issn.1673-8225.2009.16.043
- VernacularTitle:种植牙用钛合金Ti-30Nb-8Zr-2Mo硬度及弹性模量
- Author:
Jiayin DENG
;
Chunxiang CUI
;
Shuangjin LIU
;
Yumin QI
;
Wei YANG
;
Ping GAO
;
Cheng PENG
;
Miyazaki TAKASHI
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2009;13(16):3189-3192
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND: As dental implants, pure titanium and Ti-6Al-4V has achieved broad clinical applications, but they also contain toxic vanadium and aluminum element. Moreover, their elastic modulus is so high as to produce stress shield. OBJECTIVE: To examine the micro-hardness and elastic modulus of the self-made Ti-30Nb-8Zr-2Mo titanium alloy. DESIGN, TIME AND SETTING: An observational experiment was performed at the laboratory of College of Material Science and Engineering at Hebei University of Technology between March 2003 and February 2006. MATERIALS: Titanium alloy was prepared using titanium sponge (≥ 99% purify), niobium strip (≥ 99.9% purify), molybdenum powder (≥ 99% purify) and zirconium sponge (≥ 99.4% purify).METHODS: The micro-hardness of the specimens was determined after uniformly annealing, hot-forging and solution. Compression test was conducted on post-aging samples. MAIN OUTCOME MEASURES: Hardness and stress-strain curve.RESULTS: The maximal alloy strength was obtained after solution under 800 ℃ for 0.5 hours. Post-aging alloy's hardness was improved significantly although little change occurred on solution alloy. Compressive strength of alloy samples was 1 054 MPa, while elastic modulus reached 16.5 GPa. CONCLUSION: Both micro-hardness and elastic modulus of the self-made Ti-30Nb-8Zr-2Mo titanium alloy have satisfied performance requirements for dental implant materials.
