汽车发动机气缸热喷涂涂层的现状与发展  

Status and Development of Thermal Spray Coating for Automotive Engine Cylinder

作　　者：魏秋兰[1] 邢亚哲[2] 

机构地区：[1]陕西交通职业技术学院汽车工程系,陕西西安710018 [2]长安大学材料科学与工程学院,陕西西安710064

出　　处：《陕西交通职业技术学院学报》2013年第1期22-27,共6页Journal of Shaanxi College of Communication Technology

摘　　要：为了提高汽车发动机气缸壁热喷涂涂层的耐磨性能并降低燃料消耗，系统分析了该涂层的失效机制，综述了汽车发动机铝合金气缸壁耐磨涂层、气缸盖内表面以及活塞端面耐热涂层的热喷涂制备及发展现状，结果认为通过优化喷涂工艺提高涂层中固体润滑剂含量有助于提高涂层耐磨性，而通过喷涂制备合理结构的梯度涂层有助于提高耐热涂层的寿命。提出通过控制涂层中孔隙及其分布来改善涂层储油能力，通过原位形成具有自润滑功能的氧化物来改善涂层减摩性能，以及通过适当提高基体温度改善粒子问结合来提高涂层抗粒子剥落磨损性能将是该类涂层进一步发展的主要方向。In order to improve the wear - resisting performance of the automobile engine＇s cylinder wall thermal spraying coating and reduce fuel consumption, In this paper, after analysing inefficacy mechanism of coating, the automotive engine aluminum cylinder wall wear - resisting coating, the inside surface of cylinder head and piston end of heat - resisting coating preparation and current situation of the development of thermal spraying are summarized, it turns out optimizing the spraying process increase solid lubricant content in the coatings would help to improve coating wear resistance while the reasonable structure of the gradient coating spraying preparation helps to improve life of the heat resistant coating. Furthermore, the development prospects and direction of the coatings are discussed by controlling its pore and distribution in the coating to improve the coating oil - storage ability, though in - situ forming oxide with self - lubrication functions to improve the coating anti - friction performance, improve combination between the particles to improve the coating particles peeling wear resistance by increasing the substrate temperature.

关 键 词：发动机 气缸 热喷涂 耐磨涂层 耐热涂层 

分 类 号：TK406[动力工程及工程热物理—动力机械及工程]