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Study on joining of orthodontic titanium-based materials using laser-welding

正畸钛基材料激光焊接连接研究

基本信息

批准号：
17592145
负责人：
IIJIMA Masahiro
金额：
$ 2.3万
依托单位：
Health Sciences University of Hokkaido
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17592145/
关键词：
archwire be ta-Ti Ni-Ti laser-welding Micro-XRD tension test

项目摘要

Laser welding 0.016×0.022 inch beta-Ti, Ni-Ti and Co-Cr-Ni orthodontic wires was investigated by measuring joint tensile strength, measuring laser penetration depth, determining metallurgical phases using Micro-XRD, and examining microstructures with an SEM. Welding was performed at voltages from 150 to 230 V. Mean tensile strength for Ni-Ti groups was significantly lower (P < 0.05) than for most other groups of laser-welded specimens. Although mean tensile strength for beta-Ti and Co-Cr-Ni was significantly lower than for control specimens joined by silver soldering, it was sufficient for clinical use. The beta-Ti orthodontic wire showed deeper penetration depth from laser welding than the Ni-Ti and Co-Cr-Ni orthodontic wires. Micro-XRD patterns of laser-welded beta-Ti and Ni-Ti obtained 2 mm from the boundary were similar to as-received specimens, indicating that original microstructures were maintained. When output voltages of 190 V and higher were used, most peaks from joint areas disappeared or were much weaker, perhaps because of a directional solidification effect, evidenced by SEM observation of fine striations in welded beta-Ti. Laser welding beta-Ti and Co-Cr-Ni wires may be acceptable clinically, since joints had sufficient strength and metallurgical phases in the original wires were not greatly altered

对0.016×0.022英寸的β-钛、镍-钛和钴-铬-镍正畸丝进行了激光焊接，测量了接头的抗拉强度，测量了激光穿透深度，用显微X射线衍射仪测定了金相组成，用扫描电子显微镜观察了显微组织。焊接在150~230V的电压下进行，镍钛组的平均抗拉强度显著低于大多数其他激光焊接试件组(P&lt；0.05)。虽然贝塔钛和钴铬镍的平均抗拉强度明显低于银焊连接的对照试件，但仍足以满足临床使用的要求。β-钛正畸焊丝激光焊接熔深大于镍-钛正畸焊丝和钴-铬-镍正畸焊丝。激光焊接的贝塔钛和镍钛在距边界2 mm处的显微X射线衍射图与原始样品相似，表明原始组织保持不变。当输出电压为190V或更高时，焊缝区的大部分峰消失或变弱，这可能是由于定向凝固效应，扫描电子显微镜观察到焊接的β-Ti中有细小的条纹。激光焊接贝塔钛和钴铬镍焊丝可能在临床上是可以接受的，因为接头具有足够的强度，并且原始焊丝中的冶金相没有太大变化

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Laser welding investigation of orthodontic titanium-based wires

正畸钛基丝激光焊接研究

DOI：
发表时间：
2005
期刊：
The Journal of Hokkaido Orthodontic Society 33(1)
影响因子：
0
作者：
Masahiro Iijima;Mikio Kuwabara;Toshihiro Yuasa;Takeshi Muguruma;Itaru Mizoguchi
通讯作者：
Itaru Mizoguchi

Joining Titanium-based Orthodontic Archwires with Laser Welding

用激光焊接连接钛基正畸弓丝