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将松散的石墨粉末导入到面接触摩擦副间隙中,对粉末层形成和破坏过程的宏、微观现象进行了跟踪和分析.通过对粉末层的电子、光学显微镜观察及能谱分析发现粉末层典型的生命周期包含完整、轻微破损、严重剥落和完全破坏4个阶段.利用光学显微镜观察到粉末层的鼓包、部分剥落、分层剥落和擦伤等微观现象,这些现象代表粉末层不同阶段的破坏状态和磨损程度.鼓包、部分剥落、分层剥落是粉末层破坏的早期形式.擦伤是粉末层破坏的严重形式,表明上试件和下试件发生了表面的直接接触并产生磨损,通常能够在粉末层完全破坏之前观察到.
The loose graphite powder was introduced into the surface contact friction pair gap to trace and analyze the macroscopic and microscopic phenomena during the formation and destruction of the powder layer.According to the electron and optical microscope observation and energy spectrum analysis of the powder layer, Life cycle includes four stages of complete, minor damage, severe spalling and complete destruction.Microscopic phenomena such as bulging, partial exfoliation, delamination and abrasion of the powder layer are observed by light microscopy, which represent the destruction of different phases of the powder layer Condition and degree of wear Drum, partial peeling, delamination Peeling is the early form of damage to the powder layer, which is a severe form of powder layer failure that indicates direct surface contact and wear of the upper and lower specimens, It can be observed before the powder layer is completely destroyed.