1600℃下Mo合金-W涂层的互扩散行为研究  

Interdiffusion Behavior of W Coating and Mo Alloy at 1600 ℃

作　　者：陈博[1] 郑剑平[1] 张华锋[1] 王振东[1] 雷华桢[1] 姜玮[1] 王卫军[1] 钟武烨 饶立强 

机构地区：[1]中国原子能科学研究院,北京102413 [2]中国舰船研究院,北京100192

出　　处：《稀有金属材料与工程》2014年第4期932-935,共4页Rare Metal Materials and Engineering

摘　　要：对w涂层和Mo合金在1600℃下的互扩散行为进行了研究，单晶样品长期（最长5000h）高温退火后仍然保持单晶形貌，多晶材料w晶界多垂直于Mo表面方向。由线扫描结果：w向Mo基体的扩散深度大于Mo向w涂层的扩散深度。根据电子探针数据使用DenBroeder方法对Mo．W的互扩散系数进行了计算，1600℃时Mo-W的互扩散系数在10^-15-10^-16cm2／s量级，且lnD与yw成线性关系，斜率为-1．82。The interdiffusion behavior of W coating with Mo alloy at 1600 ℃ was studied, the monocrystal samples remained monocrystal feature without after long time （maximum of 5000 h） annealed, and grain boundary of polycrystal W was perpendicular to the surface of Mo. As the result of line scan of SEM： the diffusion depth of W in Mo was larger than that of Mo in W. The interdiffusion coefficient D of monocrystal Mo-W system was calculated with EPMA datas by the method of Den Broeder, and as the result： D was 10^-15 10^-16 cm2/s at 1600 ℃, lnD was linear relationship inverse of concentration of W, and the slope was - 1.82.

关 键 词：Mo-Nb单晶 W涂层 互扩散系数 

分 类 号：TG111.6[金属学及工艺—物理冶金]