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[Studies on the proper processing of silver-palladium casting alloys].

Authors
  • Lenz, E
  • Płonka, B
Type
Published Article
Journal
Stomatologie der DDR
Publication Date
Jan 01, 1979
Volume
29
Issue
10
Pages
783–791
Identifiers
PMID: 392819
Source
Medline
License
Unknown

Abstract

The internal structure and the hardness of three silver-palladium alloys (Sipal 306, Spall WT 52, Bego Gold-EWL G) were investigated in the as-cast condition, after homogenization and after salt-bath hardening. From the results obtained it is concluded that the optimal processing conditions for Sipal 306 and Spall WT 52 are: homogenization at 850 degrees C for more than 2 hours, and hardening at 430--450 degrees C for 15 minutes. The hardness values thus obtained meet the requirements of the type IV indication of the FDI specification no. 7; however, the inhomogenous structure causes a lower resistance to tarnish.

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