权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development and application of ultra-high strength titanium alloy thin sheet and fine-diameter wire coated with TiN

TiN涂层超高强度钛合金薄板及细径丝材的开发与应用

基本信息

批准号：
13555177
负责人：
OUCHI Chiaki
金额：
$ 5.44万
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：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555177/
关键词：
fine diameter wire thin sheet biocompatibility βtype titanium alloy physical vapor deposition ultra-high strength composite material functional electrical stimulation (FES)生体内マイクロマシン TiN被覆生体用新β型チタン合金 PVDコーテイング生体材料ステンレス鋼 PVD

项目摘要

A high strength titanium thin sheet or fine diameter wire are needed for various medical implant devices or materials such as a metallic stent or a functional electrical stimulation (FES) electrode. This study originated from new discovery that ultra-high strength could he obtained by TiN coating on heavily cold drawn wire with a 25mm diameter. The results were summarized as followed(1) New β type titanium alloy, Ti-14%Mo-3%Nb-1.5%Zr-0.08%[O], fully satisfying target properties was developed, and biocompatibility of this alloy was found to be superior over the Type 316L steel and comparable to Ti-6A1-4V alloy, and in cold workability wan much improved over the practical titanium alloys.(2) A thin sheet with a thickness down to 33mm and a fine diameter wire with 50mm were manufactured in this new alloy. These limiting dimensions of a sheet or wire were due to restriction of rolling mill used and manufacturing technology. In fact, surface oxidation by anodizing process in place of atmosp … More heric heating for prevention from sticking phenomena during hole dies drawing was confirmed to improve markedly cold workability, indicating possibility of manufacturing a finer thickness sheet or a finer diameter wire of this alloy.(3) It was found that an extremely higher strength up over 3100 MPa in the Type 316L steel wire was obtained by very thin TiN coating by PVD, white strength of as-cold drawn wire without TiN coating was 2400 MPa. Because of non-achievement of manufacturing a 25mm diameter wire of new Ti alloy, it was unable to confirm similar strengthening in TiN coating on this alloy wire. An industrial PVD process enabling to practice continuous coating on a fine diameter wire and the optimized conditions for processing parameters of surface coating were proposed.(4) The effect of TiN coating on the Type 316L steel wire rope woven with 19 strands on rotating-bend fatigue property was examined in 0.9% NaCl physiological salt solution at 310K and fatigue strength in the high cycle range was much improved due to suppression of erosion which took place among wires during test for non coated wires. This indicates a fine diameter wire coated by TiN can be utilized as a material for FES electrode. Manufacturing test of a composite material by cladding a fine diameter wire coated with TiN and thin sheet of super-plastic Zn-Al alloy was also performed, but it remained in a preliminary test stage. Less

高强度钛薄片或细直径线需要用于各种医疗植入装置或材料，例如金属支架或功能性电刺激（FES）电极。本研究源于在直径为25 mm的冷拔钢丝上镀TiN可获得超高强度的新发现。结果表明：（1）研制出了一种新型β型钛合金Ti-1 - 4%Mo-3%Nb-1.5%Zr-0.08%[O]，其生物相容性上级316L钢，与Ti-6A 1 -4V合金相当，冷加工性能比实际钛合金有很大改善。(2)用该合金生产了厚度为33 mm的薄板和直径为50 mm的细钢丝。板或线的这些限制尺寸是由于所使用的轧机和制造技术的限制。事实上，用阳极氧化工艺代替大气氧化， ...更多信息证实了在孔模拉拔过程中用于防止粘附现象的赫里克加热显著地改善了冷加工性，表明了制造该合金的更细厚度板或更细直径线材的可能性。(3)结果表明：316 L钢丝经PVD镀TiN层后，强度可达3100 MPa以上，而未镀TiN层的冷拔钢丝的白色强度可达2400 MPa。由于未能生产直径为25 mm的新型钛合金导丝，因此无法证实该合金导丝上TiN涂层的类似强化。提出了一种能够实现细直径线材连续镀覆的工业PVD工艺，并对表面镀覆工艺参数进行了优化。(4)本文研究了TiN涂层对316L型19股钢丝绳在310 K、0.9%NaCl生理盐溶液中弯曲疲劳性能的影响。结果表明，由于TiN涂层抑制了未涂层钢丝在高周疲劳试验中钢丝间的腐蚀，从而大大提高了钢丝绳在高周疲劳范围内的疲劳强度。这表明TiN涂层的细直径丝可以用作FES电极的材料。还进行了通过包覆涂覆有TiN的细直径线和超塑性Zn-Al合金薄片的复合材料的制造试验，但其仍处于初步试验阶段。少