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Tribological properties of NiCr-ZrO2(Y2O3)-SrSO4 composites at elevated temperatures

机译:NiCr-ZrO2(Y2O3)-SrSO4复合材料在高温下的摩擦学性能

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摘要

The effect of SrSO4 content on the tribological properties of NiCr-30wt%ZrO2(Y2O3) (NC30Z) cermet was evaluated over a wide temperature range from room temperature to 1000 degrees C. The results indicated that the inclusion of SrSO4 effectively improved the friction coefficients and wear rates of NC30Z cermet above 400 degrees C. NC30Z-5SrSO(4) composite against alumina ball exhibited satisfactory tribological performance, which was attributed to synergistic lubrication of pseudocubic-SrZrO3 and NiCr2O4 between 400 degrees C and 800 degrees C and cubic-SrZrO3, NiCr2O4, NiO and Cr2O3 at 1000 degrees C. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
机译:在室温至1000摄氏度的宽温度范围内,评估了SrSO4含量对NiCr-30wt%ZrO2(Y2O3)(NC30Z)金属陶瓷的摩擦学性能的影响。结果表明,加入SrSO4可有效改善摩擦系数NC30Z-5SrSO(4)复合材料对氧化铝球的摩擦磨损性能良好。NC30Z-5SrSO(4)复合材料对氧化铝球的摩擦性能令人满意,这归因于伪立方SrZrO3和NiCr2O4在400至800摄氏度和立方SrZrO3的协同润滑,1000摄氏度下的NiCr2O4,NiO和Cr2O3。(C)2016 Elsevier Ltd和Techna Group Srl版权所有。

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