表面技术2017，Vol.46Issue(6)：55-60,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.06.009
石墨增强聚酰亚胺在海水中的摩擦学性能
Tribological Properties of Graphite Reinforced Polyimide Composite in Seawater
摘要
Abstract
The work aims to provide an experimental basis for tribological application of polyimide composites in seawater. Tribological properties of friction pair consisting of 15% graphite-reinforced polyimide composite and 17-4PH stainless steel in seawater were studied using SST-ST pin-on-disk friction tester, the tribological properties under dry friction and pure water lu-brication were compared. The polyimide composites had the highest friction coefficient and wear volume (0.134 and 1.930 mm3, respectively) under dry friction. Material plastic flow and adhesive peeling were present around deep furrows on the worn sur-face of PI composites under dry friction, polyimide composites transferred on the surface of mating plate. The wear mechanism was mainly abrasive wear, plastic deformation, adhesion and peeling under dry friction condition. Provided with pure water lu-brication, the surface was subject to common material adhesion and tearing, shallow and wide furrows on the worn surface of PI composites. The wear mechanism was mainly adhesive and abrasive wear. Provided with seawater lubrication, friction coeffi-cient and wear volume were the minimum (0.086 and 1.235 mm3, respectively). The worn surface was very smooth and only a few slight furrows were present in direction of motion, the wear mechanism was mainly abrasive wear. Graphite reinforced po-lyimide composites have better tribological properties in seawater than those under dry friction and pure water lubrication.关键词
聚酰亚胺/石墨/摩擦学性能/磨损机制Key words
polyimide/graphite/tribological properties/wear mechanism分类
矿业与冶金引用本文复制引用
易蒙,顾卡丽,李健,段海涛..石墨增强聚酰亚胺在海水中的摩擦学性能[J].表面技术,2017,46(6):55-60,6.基金项目
国家自然科学基金(51505341) Supported by the National Natural Science Foundation of China (51505341) （51505341）
