Laser welding of titanium in dentistry.
Laser welding of titanium in dentistry.
复制标题
牙科中钛的激光焊接。
DOI：
10.3109/00016358809004774
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发表时间：
1988
影响因子：
2
通讯作者：
M. Bergman
中科院分区：
文献类型：
--
作者：
G. Sjögren;M. Andersson;M. Bergman
通过Brånemark方法用于骨结合种植体的非合金钛有时也用于固定装置上的修复体上部结构的金属部分以及传统类型的牙冠和牙桥。使用不同的激光接头变量，对40根钛棒进行激光焊接，其中8根为ASTM B 348 1级质量，32根为ASTM B 348 2级质量。测量焊接棒的抗拉强度、0.2%屈服应力和延伸率，并与交货时钛棒的相应值和类似尺寸的钎焊3型金合金棒的相应值进行比较。根据断口照片评价断裂类型。结果表明，在焊接过程中使用某些定义的激光接头变量产生的机械性能研究的值，这是更有利的比从钎焊金条。钛试件的断裂是韧性的，在断裂表面出现韧窝。
Unalloyed titanium of the quality used for osseointegrated implants by the method of Brånemark is also sometimes used for the metallic part of the prosthetic superstructure placed on the fixtures and for crowns and bridges of conventional type. Forty bars of titanium, 8 of ASTM B 348 grade-1 quality and 32 of ASTM B 348 grade-2 quality, were laser-welded, using dissimilar laser joint variables. Tensile strength, 0.2% proof stress, and percentage elongation of the welded bars were measured and compared with the corresponding values for the titanium bars as delivered and with those of brazed type-3 gold alloy bars of similar dimensions. The type of fracture was evaluated from fractographs. The results showed that the use of certain defined laser joint variables during welding produced values for the mechanical properties studied which were more favorable than those obtained from the brazed gold bars. The fracture of the titanium specimens was ductile, with dimples occurring at the fracture surfaces.