高速火焰喷涂高质量NiCoCrAlTaReSiY抗氧化涂层  

Deposition of High-Quality NiCoCrAlTaReSiY Oxidation Resistance Coatings by HVOF

作　　者：王开圣[1] 赵力东[2] 赵志敏[1] 

机构地区：[1]南京航空航天大学,江苏南京211100 [2]德国亚琛工业大学,德国亚琛d52070

出　　处：《稀有金属材料与工程》2010年第11期2027-2029,共3页Rare Metal Materials and Engineering

基　　金：欧共体资助项目(COST501)

摘　　要：研究了用高速火焰喷涂(HVOF)替代低压等离子喷涂(LPPS)沉积高质量的MCrAlY涂层。试验用粉料为NiCoCrAlTaReSiY,采用以煤油为燃料的K2型HVOF系统沉积涂层,研究喷嘴长度、喷涂工艺参数对粉末沉积工艺过程以及涂层性能的影响;测量涂层的孔隙率及氧含量,观察涂层经真空热处理以及高温空气氧化后的显微结构,测量了Al、O等元素在氧化涂层中的分布。结果表明,所沉积的NiCoCrAlTaReSiY涂层具有优越的抗氧化性。High quality MCrAlY coatings were deposited by a high velocity oxy-fuel (HVOF) spraying process as a substitute for low pressure plasma spraying (LPPS). A kerosene-driven HVOF system K2 was used with NiCoCrAlTaReSiY as powder lot. The influences of the nozzle length and spraying parameters on the deposition process and coating properties were studied. The coating porosity and oxygen content were determined. The microstructure of the coating after vacuum heat treatment and high-temperature oxidation in air was observed. The distribution of Al and O in the coating was measured. The result shows that the obtained NiCoCrAlTaReSiY coatings have excellent oxidation resistance.

关 键 词：高速火焰喷涂 高质量 抗氧化涂层 HVOF 沉积 低压等离子喷涂 高温空气氧化 真空热处理 MCRALY涂层 显微结构 涂层性能 抗氧化性 工艺过程 工艺参数 测量 氧含量 试验用 孔隙率 元素 系统 

分 类 号：TG174.4[金属学及工艺—金属表面处理]