Journal of Oral Science
Online ISSN : 1880-4926
Print ISSN : 1343-4934
ISSN-L : 1343-4934
Original
Effect of laser irradiation conditions on the laser welding strength of cobalt-chromium and gold alloys
Hisaji KikuchiTomoko KurotaniMasahiro KaketaniHisako HiraguchiHideharu HiroseTakayuki Yoneyama
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2011 Volume 53 Issue 3 Pages 301-305

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Abstract

Using tensile tests, this study investigated differences in the welding strength of casts of cobalt-chromium and gold alloys resulting from changes in the voltage and pulse duration in order to clarify the optimum conditions of laser irradiation for achieving favorable welding strength. Laser irradiation was performed at voltages of 150 V and 170 V with pulse durations of 4, 8, and 12 ms. For cobalt-chromium and gold alloys, it was found that a good welding strength could be achieved using a voltage of 170 V, a pulse duration of 8 ms, and a spot diameter of 0.5 mm. However, when the power density was set higher than this, defects tended to occur, suggesting the need for care when establishing welding conditions. (J Oral Sci 53, 301305, 2011)

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© 2011 by Nihon University School of Dentistry
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