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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β-Ti、Ni-Ti和Co-Cr-Ni正畸丝的激光焊接进行了研究，测量了接头抗拉强度、激光熔深、显微X射线衍射（Micro-XRD）分析金相组织和扫描电镜（SEM）观察显微组织。在150至230 V的电压下进行焊接。Ni-Ti组的平均拉伸强度显著低于（P < 0.05）大多数其他激光焊接样本组。尽管β-Ti和Co-Cr-Ni的平均拉伸强度显著低于通过银焊接连接的对照样本，但其足以用于临床。β-Ti正畸丝的激光焊接穿透深度大于Ni-Ti和Co-Cr-Ni正畸丝。从边界处2 mm处获得的激光焊接β-Ti和Ni-Ti的微观XRD图案与原样试样相似，表明原始显微组织保持不变。当使用190 V及更高的输出电压时，接头区域的大多数峰消失或弱得多，这可能是由于定向凝固效应，焊接β-Ti中细条纹的SEM观察证明了这一点。激光焊接β-Ti和Co-Cr-Ni丝在临床上是可以接受的，因为接头具有足够的强度，并且原始丝中的冶金相没有发生很大改变

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