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采用SRV-Ⅳ高精度微动磨损试验机研究核电材料Inconel600合金的高温微动磨损行为和机制.温度升高有利于黏着区的形成,抑制微滑区的产生,促使摩擦系数和磨损量逐渐减小.摩擦氧化主要发生在环状滑动区,中心黏着区相对很少.高温下氧元素分布较室温下的更加聚集.中心黏着区表面氧含量较低,表层大量存在Ni、Cr和Fe的单质.磨痕表面氧化物由Ni O、Cr2O3和Fe3O4组成.室温和高温条件下磨痕表面中心黏着区和环状滑动区交界处产生了微裂纹,高温下裂纹萌生在微滑区,与室温下相比,高温下裂纹萌生的数量更少,长度更短.
The high-temperature fretting wear behavior and mechanism of Inconel600 alloy were studied by using SRV-Ⅳ high-precision fretting wear tester. The temperature increase is conducive to the formation of adhesion zone, the formation of micro-slip zone, and the decrease of friction coefficient and wear rate The frictional oxidation occurs mainly in the annular sliding zone with relatively few central adhesion zones.The oxygen distribution is more concentrated under high temperature than at room temperature.The oxygen content on the surface of the central zone is relatively low and there is a large amount of elemental Ni, Cr and Fe The surface oxide of wear scar was composed of NiO, Cr2O3 and Fe3O4.The microcracks were formed at the interface between the center and annular slippery area at room temperature and high temperature, and the crack initiation occurred in the micro-slip area at room temperature and high temperature, Compared to the crack initiation under high temperature, the number of fewer, shorter length.