Investigation of stiffness and microstructure of joints soldered with gas-oxygen torch infrared methods

Ansgar C. Cheng, John Y. Chai, Jeremy Gilbert, Lee M. Jameson

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The stiffness of soldered connectors fabricated with the gas-oxygen torch technique was compared with those fabricated with the infrared technique. Untreated solder materials were used as controls. Untreated solder materials of gold-palladium, palladium-silver, and chromium-cobalt alloys exhibited significantly higher stiffness than the soldered specimens fabricated with either method. There was no significant difference between the gas-oxygen torch and the infrared groups of the gold-palladium and palladium-silver alloys. Photomicrographs revealed that the soldered specimens displayed porosities. For the chromium-cobalt alloy, the infrared group demonstrated significantly higher stiffness than the gas-oxygen torch group. Photomicrographs also disclosed that the chromium-cobalt alloy soldered with the gas-oxygen torch technique had a significant heat-affected zone.

Original languageEnglish (US)
Pages (from-to)8-15
Number of pages8
JournalThe Journal of Prosthetic Dentistry
Volume72
Issue number1
DOIs
StatePublished - Jul 1994

ASJC Scopus subject areas

  • Oral Surgery

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