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    薛茂权. 含二硫化钼镍铬基高温复合材料的高温氧化行为[J]. 机械工程材料, 2008, 32(9): 67-69.
    引用本文: 薛茂权. 含二硫化钼镍铬基高温复合材料的高温氧化行为[J]. 机械工程材料, 2008, 32(9): 67-69.
    shu
    XUE Mao-quan. Oxidation Behavior of Ni-Cr Based Powder Metallurgy Composites Containing MoS2 at High Temperatures[J]. Materials and Mechanical Engineering, 2008, 32(9): 67-69.
    Citation: XUE Mao-quan. Oxidation Behavior of Ni-Cr Based Powder Metallurgy Composites Containing MoS2 at High Temperatures[J]. Materials and Mechanical Engineering, 2008, 32(9): 67-69.
    shu

    含二硫化钼镍铬基高温复合材料的高温氧化行为

    Oxidation Behavior of Ni-Cr Based Powder Metallurgy Composites Containing MoS2 at High Temperatures

      摘要
    • 摘要: 采用粉末冶金方法制备了添加质量分数为6%二硫化钼的镍铬基复合材料;对其在800,900和950 ℃的高温氧化行为进行了研究,绘制了氧化动力学曲线;用扫描电镜对其氧化表面形貌和横截面组织进行了观察.结果表明:该镍铬基复合材料在800 ℃以及900 ℃氧化100 h后,其氧化动力学符合抛物线规律,在材料表面生成了Cr2O3和NiCr2O4氧化膜,具有一定的抗氧化性能;在950 ℃氧化时,表面氧化膜出现剥落.

       

      Abstract: Ni-Cr based composite material containing 6wt% MoS2 and 15wt% tungsten was prepared by powder metallurgy method.Oxidation behavior of the composite was studied in air at 800,900 and 950 ℃ and oxidation kinetics curves were gained.The oxide morphology and microstructure were analyzed by X-ray diffraction (XRD) and SEM.The scales formed at 800 and 900 ℃ were complicated,with a layer mainly composed of Cr2O3 and a small amount of NiCr2O4.The oxidation kinetics of the composite nearly followed the parabolic oxidation law.At 950 ℃,the oxide scales formed on the oxidized composite were found to be loose.

       

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