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为了进一步优化研制的含硫高温自润滑镍基合金的综合性能，以将其应用于新型高效热引擎和推进系统为目的，利用光学显微镜、扫描电子显微镜、电子探针和Ｘ射线衍射仪等，对一种铸态的含硫高温自润滑镍基合金的显微组织和相结构进行了分析．结果表明：这种合金主要由以合金元素Ｆｅ，Ｃｏ，Ｃｒ和Ｍｏ等固溶强化的镍基固溶体基体相、硫化物相Ｃｒ３Ｓ４和复合碳化物相（Ｍｏ０．９Ｃｒ０．１）２Ｃ所组成，具有三元共晶组织特征的显微组织；这种合金的摩擦磨损性能良好，但因Ｃｒ３Ｓ４多呈粗大网状分布，故其强度和冲击韧性都比较差．这为通过调整合金的成分和制备工艺，或采用适当的热处理及后加工工艺改善合金的性能提供了科学依据
In order to further optimize the comprehensive performance of the developed sulfur-containing high temperature self-lubricating nickel-based alloy, using the optical microscope, the scanning electron microscope, the electron probe and the X-ray diffraction instrument for the purpose of applying the novel high-efficiency thermal engine and propulsion system, The microstructure and phase structure of an as-cast, high temperature, self-lubricating Ni-based alloy were analyzed. The results show that this kind of alloy consists mainly of solid solution-strengthened nickel-base solid solution phase consisting of alloying elements such as Fe, Co, Cr and Mo, sulfide phase Cr3S4 and composite carbide phase (Mo0.9Cr0.1) 2C, The microstructure of the ternary eutectic microstructure; the friction and wear properties of this alloy is good, but the Cr3S4 mostly coarse mesh distribution, so the strength and impact toughness are relatively poor. This provides a scientific basis for improving the performance of the alloy by adjusting the composition and the preparation process of the alloy or by using appropriate heat treatment and post-processing processes