Development of Ti-Ni alloy as a stress shielding biomaterial

开发钛镍合金作为应力屏蔽生物材料

• 批准号: 10480242
• 负责人: YONEYAMA Takayuki
• 金额: $ 5.12万
• 依托单位: Tokyo Medical and Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10480242/
• 关键词: Titanium-nickel alloy; Impact test; Hopkinson pressure-bar; Heat treatment; Phase transformation

The purpose of this research was to evaluate the impact stress transmission of Ti-Ni alloy for biomedical stress shielding. An impact compression test was carried out with use of split-Hopkinson pressure-bar technique with cylindrical specimens of Ti-Ni alloy, titanium and stainless steel. As a result, the transmitted pulse through Ti-Ni alloy was considerably depressed as compared with those through titanium and stainless steel. The initial stress reduction was large through Ti-Ni alloy and titanium, but the stress reduction through Ti-Ni alloy was much more continuous than titanium. The maximum value in the stress difference betweeen incident and transmitted pulses throgh Ti-Ni alloy or titanium was higher than that through stainless steel, while the stress reduction in the maximum stress through Ti-Ni alloy was statistically larger than that through titanium or stainless steel. Ti-Ni alloy transmitted less impact stress than titanium or stainless steel, which suggested that the loading stress to adjacent tissues could be decreased with use of Ti-Ni alloy as a component material in an implant system. Transformation behavior of the alloy, which is an important factor on the stress transmission, were alos investigated by means of DSC.

本研究的目的是评估生物医学应力屏蔽用钛镍合金的冲击应力传递。采用劈裂-霍普金森压杆法对钛镍合金、钛和不锈钢圆柱试样进行了冲击压缩试验。结果表明，通过Ti-Ni合金的传输脉冲比通过钛和不锈钢的传输脉冲明显降低。Ti-Ni合金和钛的初始应力降低幅度较大，但Ti-Ni合金的应力降低幅度要比钛大得多。通过Ti-Ni合金或钛的入射脉冲与透射脉冲的应力差最大值高于通过不锈钢的应力差最大值，而通过Ti-Ni合金的最大应力减小量在统计学上大于通过钛或不锈钢的应力减小量。Ti-Ni合金传递的冲击应力比钛和不锈钢要小，这表明Ti-Ni合金作为构件材料可以降低对邻近组织的加载应力。利用DSC对影响应力传递的重要因素合金的相变行为进行了研究。

项目成果

T.Yoneyama: "Stress transmission through Ti-Ni alloy, titanium and stainless steel in impact compression test"Journal of Materials Science : Materials in Medicine. 11. 333-336 (2000)

T.Yoneyama：“冲击压缩试验中钛镍合金、钛和不锈钢的应力传递”材料科学杂志：医学材料。

T.Yoneyama: "Stress transmission through Ti-Ni alloy, titanium and stainless steel in impact compression test"J.Mater.Sci.Mater.Med.. 11. 333-336 (2000)

T.Yoneyama：“冲击压缩试验中 Ti-Ni 合金、钛和不锈钢的应力传递”J.Mater.Sci.Mater.Med.. 11. 333-336 (2000)

T.Yoneyama: "Stress transmission through Ti-Ni alloy. titanium and stainless steel in impact compression test"Journal of Materials Scienec : Materials in Medicine. 11(6). 333-336 (2000)

T.Yoneyama：“冲击压缩试验中通过钛镍合金、钛和不锈钢的应力传递”材料科学杂志：医学材料。