碳化硼表面金属化初步研究

Preliminary Study about the Surface Metallization of Boron Carbide

为了降低碳化硼(B,C)与金属钎焊连接的温度,采用真空熔结Al基钎料的方法,在1000℃时对其进行了表面金属化处理,SEM和EDAX观察分析B4C与钎料结合断面的形貌和元素面分布,发现B4C与钎料界面发生了互扩散,界面结合致密,形成冶金结合.

To bring down the temperature needed for brazing boron carbide to metals, the surface metallization of boron carbide was made. This was done by melt coating with an Al-based braze alloy on the surface of boron carbide in vacuum at 1000℃. The morphology and elements＇ map distribution across the interface were analyzed with SEM and EDAX, respectively. The results showed that the braze alloy was well joined to boron carbide, and the elements diffusion took place across the interface.