Walter M
Dtsch Zahnarztl Z. 1989 Apr;44(4):248-53.
Samples of palladium-silver and palladium-copper alloys with ceramic veneers were examined under incident light and scanning electron microscopes in terms of their metallographic properties. Both materials showed a fine grain structure. The palladium-silver alloy had inhomogeneous crystallites. The palladium-copper alloy showed several heterogeneous phases. Wavelength dispersive x-ray analysis was used to record concentration profiles and element distribution patterns. An accumulation of nonprecious components and oxygen was observed in the immediate ceramometal interface. Adjacent to this a largely homogeneous zone was visible which is probably due to the diffusion of nonprecious elements during the different stages of baking. The results lead to conclusions concerning the final finishing after application of the ceramic veneer.
对带有陶瓷贴面的钯银合金和钯铜合金样本,在入射光和扫描电子显微镜下检查了它们的金相性能。两种材料均呈现出细晶粒结构。钯银合金有不均匀的微晶。钯铜合金显示出几个异质相。利用波长色散X射线分析记录浓度分布和元素分布模式。在陶瓷-金属直接界面处观察到非贵金属成分和氧的积聚。在此附近可见一个基本均匀的区域,这可能是由于在不同烘烤阶段非贵金属元素的扩散所致。这些结果得出了关于陶瓷贴面应用后最终修整的结论。