Development of titanium wire ropes for implantable stimulation electrode and their evaluation

植入式刺激电极用钛钢丝绳的研制及其评价

基本信息

批准号：
16360342
负责人：
IGUCHI Yasutaka
金额：
$ 4.54万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

项目摘要

1. Development of titanium wore for implantable stimulation electrodes(1) α+β type Ti-4.5Al-6Nb-2Fe-2M titanium alloy was drawn to the wire with 100 μm in diameter. Anodic oxidation was effective to the oxide formation on the surface for wire drawing. In the atmospheric oxidation for oxide formation process, it was suggested that the low temperature process was preferred.(2) β type Ti-14Mo-3Nb-1.5Zr titanium alloy was drawn to the wire with 42 μm in diameter. The low temperature atmospheric oxidation was used for oxide formation process on the surface. In addition to that, the β type alloy was drawn to 100 μm in diameter using anodic oxidation, which showed the smooth surface after drawing.(3) CP titanium (4N) was drawn to the wire with 47 μm in diameter. The surface morphology of this wire was better than that of commercially available CP titanium wire with 46 μm in diameter.(4) α type Ti-10Zr titanium alloy was drawn to the wire with 51 μm in diameter, which exhibited the excellent surface smoothness and mechanical properties. The wire ropes with 7 and 7x7 strands made of Ti-10Zr titanium alloy were successfully developed.2. Evaluation(1) The maximum tensile strength and total elongation of CP titanium wire with 47 μm in diameter were 980 MPa and 3.5 %. The mechanical properties of the β type Ti-14Mo-3Nb-1.5Zr titanium alloy wire and the α type Ti-10Zr titanium alloy wire were measured.(2) The fatigue limits of the developed CP titanium wire with 47 μm in diameter and commercially available CP titanium wire with 46 μm in diameter were 200 MPa and 300 MPa, respectively. The difference of fatigue limit may be caused by the surface roughness after fatigue testing. The commercially available CP titanium wire exhibited the smoother surface than developed CP titanium wire after 10^7 cycles.

1。钛的发育用于植入刺激电极（1）α+β型TI-4.5AL-6NB-2FE-2FE-2FE-2FE-2M-2FE-2M钛合金合金被直径为100μm。阳极氧化可有效地表面上的氧化物形成。在氧化物形成过程的大气氧化中，建议首选低温过程。（2）β型Ti-14mo-3NB-1.5ZR钛合金被吸引到直径42μm的电线上。低温大气氧化用于表面上的氧化物形成过程。除此之外，使用阳极氧化将β型合金绘制为直径为100μm，该氧化在绘制后显示了光滑的表面。（3）CP钛（4N）的直径为47μm。该线的表面形态比直径为46μm的市售CP钛金属丝的表面形态要好。（4）α型Ti-10zr钛合金被直径为51μm的电线吸引到电线上，从而暴露了出色的表面平滑度和机械性能。成功开发了由Ti-10zr钛合金制成的7条和7x7链的电线绳。2。评估（1）直径47μm的CP钛金属丝的最大拉伸强度和总伸长率为980 MPa和3.5％。测量了β型Ti-14mo-3NB-1.5ZR钛合金线和α型Ti-10zr钛合金线的机械性能。（2）发达的CP Titanium的疲劳极限，直径为47μm，直径为47μm，并具有46μm和36μm的cp Titanium cop cp titanium cop titanium cip and。疲劳极限的差异可能是由于疲劳测试后的表面粗糙度引起的。在10^7周期后，商业上可用的CP钛金属丝暴露于光滑的表面。