新型水润滑轴承材料的摩擦学性能研究

Study on the Tribological Properties of New Water Lubricated Bearing Materials

针对目前有较好应用前景的新型水润滑轴承材料,利用环-块摩擦磨损试验机试验研究了赛龙、飞龙、超高分子量聚乙烯在淡水介质和人工海水介质中的滑动摩擦磨损性能,结合扫描电子显微、白光共焦三维形貌仪等检测手段,探讨材料的摩擦磨损机理。结果显示:在两种试验介质中,赛龙/GCr15摩擦副的摩擦系数最高,超高分子量聚乙烯/GCr15摩擦副的摩擦系数最小;超高分子量聚乙烯的磨损体积最小,飞龙最大,赛龙居中。磨损机制主要为磨粒磨损。在海水介质中,飞龙材料表面粘附有大量结晶盐颗粒,在摩擦磨损过程中有增加磨损的作用。

New water lubricated bearing materials （UHMWPE, Thordon and Tenmat） is commonly used in propeller shaft system of the ship, the tribological properties of UHMWPE, Thordon and Tenrnat in tap water and artificial sea water were respectively investigated on the block-on-disc wear tester. It went on to discuss the mechanisms of wear surface through the analyses of three-dimensional morphologies and SEM micrographs investigations. This study demonstrates that the friction coefficient of Thordon/GCrl5 pair is highest than the other two materials in tap water and artificial sea water, UHMWPE/GCr15 pair is lowest. UHMWPE＇s wear volume is smallest than that two materials, and the Tenmat＇s wear volume is biggest. The wear mechanism involved is mainly of abrasive wear. There are many salt particles on the wear surface of Tenmat, and increased the wear volume of the Tenmat during the sliding.