界面接触温度对等离子喷涂封严涂层性能的影响  

Impact of Interface Contact Temperature on the APS Seal Coating

作　　者：陈志坤[1] 刘自敬[1] 朱晖朝[1] 张忠诚[1] 

机构地区：[1]广州有色金属研究院材料表面研究所,广州510650

出　　处：《中国表面工程》2012年第6期73-78,共6页China Surface Engineering

摘　　要：用等离子喷涂制备航空封严涂层。通过改变冷却气压力的方式,调节喷涂过程中的基体温度,从而研究界面接触温度对涂层性能的影响。用OM和SEM观察封严涂层的组织形貌,用XRD分析封严涂层的物相组成,并对封严涂层进行摩擦磨损试验和冲蚀试验,研究界面接触温度对封严涂层的磨损性能和冲蚀性能的影响。试验结果表明,等离子喷涂封严涂层能够获得典型的蜂窝状组织结构。提高喷涂过程中接触温度能够提高涂层的显微硬度、沉积率与抗冲蚀性能,但涂层的可磨耗性能有所降低。The seal coating were prepared by air plasma spray （APS）. The interface contact temperature was adjusted by changing the cooling blast in the spraying process. Optical microscope and scan electron micro- scope are used to observe the micrograph of the seal coating. The X-ray diffraction is used to analyze the phase in the seal coating. The abradable property and anti-erosion test were performed to investigate the im- pact of the interface contact temperature on the sea[ coating property. Results show that plasma spaying seal coating can obtain the typical cellular microstructure. With increasing interface contact temperature, the micro -hardness, deposit rate, and the anti-erosion performance are improved; however, the abradablity is reduced.

关 键 词：等离子喷涂 封严涂层 界面接触温度 沉积率 可磨耗性能 抗冲蚀性能 

分 类 号：TG174.442[金属学及工艺—金属表面处理]