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中文摘要：
以氧化锫和钼粉为原料，在不同烧结工艺下制备了50％Mo-ZrO2金属陶瓷。采用扫描电镜和能谱仪分别分析了试样的微观结构和成分，用四电极法研究了试样高温电阻率。结果表明，增加烧结保温时间和提高烧结温度，可使试样烧结的更加致密，但试样的高温电阻率变化不大，800-1600℃该材料的电阻率与温度的关系为：K=-0．41＋0．006T。试样的电阻率总体上随温度升高而增大，晶粒较大的试样电阻率在1150-1200℃出现峰值。
英文摘要：
50%Mo-ZrO2 cermet was prepared by ZrO2 and Mo powder under different sintering processes. SEM and EDS were adopted to analyze the microstructure and chemical composition of the samples, respectively. High-temperature electrical resistivity of the samples was measured by four-probe methods. The results indicate that increasing sintering time and enhancing the sintering temperature can lead to samples more compact in structure, but the change of high-temperature electrical resistivity of the sample is not obvious, equation about electrical resistivity and temperature within the range of 800- 1600 ℃ is k =-0.41＋0.006T. The electrical resistivity generally increases with the increase of temperature, and a peak value of the electrical resistivity emerges between 1150 ℃ and 1200℃ in the sample with large grain size.
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