A support material with low expansivity and high conductivity, called DG alloy, was prepared by powder metallurgy.The effects of sintering process on its properties and microstructure were studied.

• 采用粉末冶金技术制备了一种低膨胀高导热支撑材料（简称DG合金），研究了烧结工艺对合金组织和性能的影响。