等离子喷涂Al_2O_3-TiO_2-ZrO_2涂层及其耐磨损性能  

Preparation of Plasma-Sprayed Al_2O_3-TiO_2-ZrO_2 Coating and Its Wear Resistance

作　　者：高杨[1] 张建新[1] 阎殿然[1] 张乾[1] 

机构地区：[1]河北工业大学材料学院,天津300130

出　　处：《材料保护》2009年第11期43-45,共3页Materials Protection

摘　　要：采用液相喷雾造粒法将准微米Al2O3,TiO2,纳米ZrO2颗粒团聚成微米粉体,并用等离子喷涂技术制备了含纳米颗粒的Al2O3-TiO2-ZrO2陶瓷涂层。在MM200型环块磨损试验机上进行了常温干摩擦试验,比较了含有纳米颗粒的Al2O3-TiO2-ZrO2涂层和传统Al2O3-TiO2陶瓷涂层的耐磨损性能,并用扫描电镜观察磨损后的磨痕形貌。结果表明,含有纳米颗粒的涂层耐磨损性能明显优于传统的陶瓷涂层。Quasi-micro-sized particulates of Al2O3and TiO2, together with nano-sized particulates of ZrO2 were ag-gregated into micro-sized powders by using liquid-phase sprayingand granulating. The granulated particulates were then plasmasprayed to fabricate Al2O3-TiO2-ZrO2 ceramic coating containingnano-sized particulates. The wear resistance of the resulting plas-ma sprayed ceramic coating was evaluated and compared with thatof conventional Al2O3-TiO2 coating using an MM-200 friction andwear tester. And the worn surfaces of the ceramic coatings wereobserved using a scanning electron microscope. Results show thatthe plasma sprayed Al2O3-TiO2-ZrO2 coating has much betterwear resistance than conventional Al2O3-TiO2 coating.

关 键 词：等离子喷涂 Al2O3-TiO2-ZrO2涂层 耐磨性 

分 类 号：TG174.44[金属学及工艺—金属表面处理]