NiCoCrAlYSiB+AlSiY梯度涂层的组织结构  

Effect of the Morphology and Microstructure of Gradient Coating(NiCoCrAlYSiB+AlSiY)

作　　者：王维新[1] 卫广智[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003

出　　处：《现代机械》2011年第3期84-86,共3页Modern Machinery

摘　　要：采用电弧离子镀技术在Ni基单晶高温合金基体上制备了NiCoCrAlYSiB涂层和(NiCoCrAlYSiB+AlSiY)梯度涂层,对比研究了两种涂层沉积态与退火态的组织结构。结果表明:退火处理后,普通涂层以γ'/γ相为主和弥散其中的点状β-NiAl相构成;梯度涂层外层为β-NiAl相,内层和普通涂层的结构相似。Two kinds of coatings, the conventional NiCoCrA1YSiB coating and the gradient coating （NiCoCrAlYSiB ＋ AlSiY）, were prepared using arc ion plating （AlP） on the Ni base single crystal superalloy substrate. Comparative studies of the morphology and mierostructure at as-deposited and as-annealed. The results showed that： after vacuum annealing, the conventional coating consisted of general γ′/γ and a small quantity of β-NiAl while the gradient coating was mainly composed of β-NiAl and dispersed Cr3Si.

关 键 词：梯度涂层 电弧离子镀 互扩散 高温氧化 

分 类 号：TG178[金属学及工艺—金属表面处理]