TZP 陶瓷在水润滑下的磨损机制转变图

Wear Mechanisms Transition Map of TZP Ceramics under Water Lubrication

在ＳＲＶ磨损试验机上对ＴＺＰ陶瓷在水润滑条件下的摩擦学行为进行了试验研究，用磨损机制转变图概括了ＴＺＰ陶瓷与５２１００钢在水润滑时于不同运行条件下的磨损机制．结果表明：ＴＺＰ陶瓷发生轻微磨损的主要机制是塑性变形，发生严重磨损的主要机制是表面断裂，在由轻微磨损向严重磨损转变的过渡区域，ＴＺＰ陶瓷发生磨损的主要机制是表面微犁削和微断裂；偶件５２１００钢球发生轻微磨损和严重磨损的主要机制分别是塑性变形和磨粒磨损．

Many applications of TZP ceramics involve prolonged contact with water and/or its solutions. However, until now the wear mechanisms of TZP ceramics under water lubrication has not get the unanimous understanding. The tribological properties of TZP ceramics under water lubrication sliding against 52100 steel have been investigated, and the wear mechanisms of TZP ceramics under water lubrication have been summarized in its wear map. The results obtained indicated that the dominant wear mechanisms of TZP ceramics under mild wear conditions is plastic deformation, whereas under sever wear conditions it is surface fracture. In the transition region, TZP ceramics undergo microploughing and microcracking. The mild and severe wear mechanisms of 52100 steel are plastic deformation and abrasive wear, respectively.