Lenz E, Płonka B
Stomatol DDR. 1979;29(10):783-91.
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.
研究了三种银钯合金（Sipal 306、Spall WT 52、Bego Gold-EWL G）在铸态、均匀化处理后以及盐浴硬化后的内部结构和硬度。从所得结果得出，Sipal 306和Spall WT 52的最佳加工条件为：在850摄氏度下均匀化处理2小时以上，在430 - 450摄氏度下硬化15分钟。由此获得的硬度值符合FDI第7号规范IV类指标的要求；然而，结构不均匀导致抗变色能力较低。
