激光焊接不同间距烤瓷合金的质量比较  

Comparative study of technique of laser welding ceramo alloy by different gap distance

作　　者：黎红[1] 赵云凤[2] 李满园 肖茂春[2] 李明哲[2] 

机构地区：[1]西南交通大学摩擦学研究所博士后工作站,610031 [2]华西医科大学口腔医学院修复科,成都610041

出　　处：《中华口腔医学杂志》2000年第2期102-104,I012,共4页Chinese Journal of Stomatology

摘　　要：目的　探讨在一定间距下激光焊接非贵金属烤瓷合金的焊接质量及临床应用的可行性。方法　激光焊接 0 0mm、0 2 5mm、0 5 0mm不同间距的CW PA烤瓷合金试件 ,测试其抗拉强度与显微硬度 ,作场发射扫描电镜断口分析与断面金相分析。结果　结果表明激光焊接 0 0mm、0 2 5mm、0 5 0mm间距的CW PA烤瓷合金后 ,试件的抗拉强度分别是 (44 6 0 5± 82 5 0 )MPa、(485 97±6 2 35 )MPa、(5 0 3 32± 6 5 79)MPa,接近其母材 (42 1 5 3± 2 1 78)MPa。各组间差异无显著性。 0 0mm与 0 2 5mm组试件的微观形貌良好。结论　①激光焊接件应尽可能靠近 ;②焊接间距应在 0 5mm以内 ,以 0 2 5mm较好 ,便于操作。Objective To investigate the quality of laser welded non precious base alloy by different gap distance and its clinic probability Methods Laser welded ceramo alloy CW PA specimens by different gap distance of 0 0 mm, 0 25 mm, 0 5 mm, Tested joined sample's UTS, microhardness; took SEM examination on its tensile fracture surface and metallographic examination on longitudinal cross section Results The study showed that UTS of Laser welded CW PA by different gap distance of 0 0 mm,0 25 mm, 0 5 mm is (446 05±82 50) MPa, (485 97±62 35) MPa, (503 32±65 79) MPa respectively, approach to original rod (421 53±21 78) MPa ( P >0 05) Microimage at tested samples of gap distance at 0 0 mm ,0 25 mm are good Conclusion It revealed that ①Laser welding specimen should be contacted as close as possible ②The gap distance should be less than 0 5 mm, 0 25 mm is better, and easy to handle

关 键 词：激光焊接 烤瓷合金 间距 质量 

分 类 号：R318.51[医药卫生—生物医学工程]