作　　者： ; ; ; ; ;

机构地区： 郑州轻工业学院材料与化学工程学院

出　　处： 《材料保护》 2007年第12期25-28,共4页

摘　　要： 为探讨纳米SiO2对火焰喷涂尼龙1010涂层性能的影响,采用示差扫描量热仪(DSC)、傅立叶红外光谱仪对涂层的热性能进行了分析;利用MRH-3型环-块摩擦磨损试验机对不同纳米SiO2添加量的复合涂层的干摩擦磨损性能进行测试,并用扫描电子显微镜(SEM)对涂层的磨损表面进行观察。结果表明,纳米SiO2的加入能明显提高尼龙1010涂层的结晶温度和结晶度,降低过冷度,改善涂层的耐磨性,降低摩擦系数及磨损量,且疲劳磨损、粘附磨损及犁切现象明显减轻;当纳米SiO2质量分数为1.5%时复合涂层综合性能最佳。 To investigate the effects of nano-SiO2 on the structure and dry sliding wear of flame spray nylon 1010 composite coatings, the friction andwear behaviors of the nylon 1010/n-SiO2 composite coatings were examined using a MRH-3 friction and wear tester. The effects of the processing parameters on the molecular structure and crystal-linity of composite coatings were analyzed by using IR and DSC. Based on the morphological observation of the worn surfaces, a possible wear mechanism was discussed. The results showed that nano-SiO2 particles in the composite coatings increased the wear resistance of the nylon 1010 matrix. The composite coatings were dominated by abrasive and mild adhesion wear as they slid against the steel counlerpart in dry ambient condition.

关 键 词： 纳米 火焰喷涂 尼龙 复合涂层 摩擦磨损性能

领　　域： [金属学及工艺] [金属学及工艺]