在试验温度为20~25℃（air）、300℃（air）、300℃（N 2），法向载荷为（F n ）50和100 N，位移幅值为60~200μm的条件下，采用PLINT高温微动磨损试验机研究核电蒸汽发生器传热管材Inconel690与1Cr13不锈钢圆柱配对副在滑移区的微动磨...在试验温度为20~25℃（air）、300℃（air）、300℃（N 2），法向载荷为（F n ）50和100 N，位移幅值为60~200μm的条件下，采用PLINT高温微动磨损试验机研究核电蒸汽发生器传热管材Inconel690与1Cr13不锈钢圆柱配对副在滑移区的微动磨损特性。结果表明：当法向载荷一定时，随位移幅值增加，在高温大气中，微动摩擦因数逐渐升高；而高温氮气中，摩擦因数降低。当载荷和位移相同时，Inconel690在高温大气中磨损较轻，在高温氮气中损伤较严重。在高温大气和高温氮气中磨痕表面均出现不同程度摩擦氧化，主要生成Fe、Ni、Cr等合金元素的氧化物。Inconel690的磨损机制主要表现为磨粒磨损、摩擦氧化和剥层磨损的共同作用。展开更多
The fretting wear behavior of 0Cr20Ni32AlTi alloy was investigated with crossed cylinder contact under 80 N at 300 and 400 °C.Wear scar and debris were analyzed systematically by scanning electron microscopy and ...The fretting wear behavior of 0Cr20Ni32AlTi alloy was investigated with crossed cylinder contact under 80 N at 300 and 400 °C.Wear scar and debris were analyzed systematically by scanning electron microscopy and X-ray photoelectron spectroscopy.The results show that the friction logs are mixed fretting regime and gross slip regime with the magnitudes of displacement of 10 and 20 μm,respectively.Severe wear and friction oxidation occur on the material surface.A large number of granular debris produced in the fretting process can be easily congregated and adhered at the contact zone after repeated crushes.The resultant of friction oxidation is mainly composed of Fe3O4,Fe2O3,Cr2O3 and NiO.Temperature and friction are the major factors affecting the oxidation reaction rate.The fretting friction effect can enhance the oxidation reaction activity of surface atoms of 0Cr20Ni32AlTi alloy and reduce the oxidation activation energy.As result,the oxidation reaction rate is accelerated.展开更多
文摘在试验温度为20~25℃（air）、300℃（air）、300℃（N 2），法向载荷为（F n ）50和100 N，位移幅值为60~200μm的条件下，采用PLINT高温微动磨损试验机研究核电蒸汽发生器传热管材Inconel690与1Cr13不锈钢圆柱配对副在滑移区的微动磨损特性。结果表明：当法向载荷一定时，随位移幅值增加，在高温大气中，微动摩擦因数逐渐升高；而高温氮气中，摩擦因数降低。当载荷和位移相同时，Inconel690在高温大气中磨损较轻，在高温氮气中损伤较严重。在高温大气和高温氮气中磨痕表面均出现不同程度摩擦氧化，主要生成Fe、Ni、Cr等合金元素的氧化物。Inconel690的磨损机制主要表现为磨粒磨损、摩擦氧化和剥层磨损的共同作用。
基金Project (51075342) supported by the National Natural Science Foundation of ChinaProject (2007CB714704) supported by the National Basic Research Program of China
文摘The fretting wear behavior of 0Cr20Ni32AlTi alloy was investigated with crossed cylinder contact under 80 N at 300 and 400 °C.Wear scar and debris were analyzed systematically by scanning electron microscopy and X-ray photoelectron spectroscopy.The results show that the friction logs are mixed fretting regime and gross slip regime with the magnitudes of displacement of 10 and 20 μm,respectively.Severe wear and friction oxidation occur on the material surface.A large number of granular debris produced in the fretting process can be easily congregated and adhered at the contact zone after repeated crushes.The resultant of friction oxidation is mainly composed of Fe3O4,Fe2O3,Cr2O3 and NiO.Temperature and friction are the major factors affecting the oxidation reaction rate.The fretting friction effect can enhance the oxidation reaction activity of surface atoms of 0Cr20Ni32AlTi alloy and reduce the oxidation activation energy.As result,the oxidation reaction rate is accelerated.
