摘要
利用中间过渡层的作用 ,在镁基金属复合材料上激光熔覆了不锈钢合金层 ,熔覆层与基体为冶金结合。中间过渡层与基体的结合交界面上 ,元素交互扩散距离为 6 0 μm。不锈钢熔覆层与过渡层的结合交界面上 ,Cr,Fe,Cu等元素的交互扩散距离约为 5 μm ,Ni,Zn两元素的交互扩散距离很大。激光熔覆试样的腐蚀电动势 (Ecorr)分别比喷涂试样和未处理试样提高两倍和三倍。
With the effect of spraying transitional layer, a stainless steel alloy layer was obtained on the magnesium based metal matrix composites by laser cladding. There is a metallurgical bonding interface between the laser clad layer and the substrate. The inter diffusing distance of elements of the bonding interface between the intermediate layer and the substrate is about 60μm. Of the bonding interface between the stainless steel clad layer and the intermediate layer, the inter diffusing distance of elements Fe and Cu is about 5μm; whereas, the inter diffusing distance of elements Ni and Zn is quite long. The corrosion potential ( E corr ) of the laser clad sample was about two and three times of magnitude higher than that of the as sprayed and untreated materials respectively.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2001年第4期32-35,共4页
Transactions of Materials and Heat Treatment
关键词
镁基金属复合材料
过渡层
激光熔覆
不锈钢
Mg based metal matrix composite
transitional layer
laser cladding
stainless steel
corrosion resistance
