Objective: To study comparatively on the effect of repeated casting on the as-cast microstructures of a precious metal ceramic alloy.

目的：观察比较反复多次铸造对贵金属烤瓷合金金相结构的影响。

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Objective to study the microsegregation phenomenon in as-cast micro structure of a precious metal ceramic alloy so as to provide theoretic basis for study on this kind of alloy.

目的观察贵金属烤瓷合金铸态组织成分偏析情况，为该合金性能研究提供理论依据。

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