Payan J, Moya G E, Meyer J M, Moya F
J Oral Rehabil. 1986 Jul;13(4):329-38. doi: 10.1111/j.1365-2842.1986.tb00667.x.
The hardening ability of a dental palladium-silver (Pd-Ag-Sn-In) bonding alloy has been investigated, and the distribution of the elements along the metal-ceramic interface have been studied by microprobe analysis. The alloy was found to be highly heterogeneous in its 'as-cast' condition, but homogenized alloy was obtained after heating the alloy at 1000 degrees C for 2 h. Hardening occurred after annealing at 650 degrees C for 1 h. A longer thermal treatment caused the hardness to decrease (over-ageing). The change in hardness could be attributed to an internal oxidation phenomenon. The additional elements tin and indium segregated towards the ceramic-metal interface, with a diffusion of indium only into the porcelain. Diffusion of silver in the ceramics, supposed to be the cause of the 'greening' of dental porcelains baked on silver-rich alloys, has not been detected by the microprobe across the interface.
对一种牙科钯银（Pd - Ag - Sn - In）粘结合金的硬化能力进行了研究，并通过微探针分析研究了元素沿金属 - 陶瓷界面的分布情况。发现该合金在“铸态”条件下高度不均匀，但在1000℃加热2小时后获得了均匀化的合金。在650℃退火1小时后发生硬化。较长时间的热处理导致硬度降低（过时效）。硬度的变化可归因于内部氧化现象。额外的元素锡和铟向陶瓷 - 金属界面偏析，只有铟扩散到瓷体中。微探针未检测到银在陶瓷中的扩散，而银在陶瓷中的扩散被认为是在富银合金上烘烤的牙科瓷体出现“泛绿”现象的原因。
