摘要
采用大气等离子喷涂法在Q2 35钢基材表面制备了Fe基非晶合金涂层 ,研究表明 ,涂层基本上由非晶相组成 ,在涂层中分布着少量的尺寸为 2～ 5 μm的淬态核结晶相 ,涂层中氧化物的含量较少。涂层由条带状粒子相互搭接、逐层堆积而成 ,具有典型的层状结构形貌。尺寸约为 6 0 μm的球形喷涂粒子在涂层中变形为高度尺寸约为6 μm扁平状粒子 ,保证了高非晶相含量涂层的顺利形成。在涂层中的粒子边界还包含着少量的孔隙、微细的球形粒子等缺陷。涂层与基材、涂层中粒子间主要以机械结合为主 ,涂层与基材的结合区为涂层 -基材体系中的最薄弱处。
Fe-based amorphous alloy coating was fabricated on A3 steel substrate by air plasma spraying technology. The coating consists of amorphous phase and a few crystallized quenching cores which size is about 2-5 μm, little oxide has been found in the coating. The coating is formed by high-deformed bond-type particles heaping up each other and has laminar structure. The particles deforming from spherical (the size is about 60 μm) to bond-type (the thickness is about 6 μm) ensures the amorphous alloy coating' s forming. A few pores and tiny spherical particles exist at the boundary of bond-type particles in the coating. The adherence between coating and substrate and the coherence of coating are mechanical combination, and the interface between coating and substrate is the weakest zone.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2003年第1期48-50,54,共4页
Transactions of The China Welding Institution
基金
广东省自然科学基金资助项目 ( 0 0 0 480 )
