铝基钎料在SiC及SiC_p/6061复合材料上的润湿性研究  

Wettability of Aluminum Base Filler Metals on SiC and SiC_P/6061 Composites

作　　者：邹家生[1] 许如强[1] 赵其章[1] 韩逸生[1] 

机构地区：[1]华东船舶工业学院材料科学与工程学院,镇江212003

出　　处：《材料开发与应用》2003年第4期5-8,12,共5页Development and Application of Materials

摘　　要：对多种铝基钎料在SiC、6 0 6 1及SiCp 6 0 6 1复合材料上进行了润湿性试验。结果表明 :炉中钎焊时 ,钎料与钎剂的成分、加热温度与保温时间、钎料与钎剂熔化温度的匹配等是影响铝基钎料润湿性的主要因素 ;真空钎焊时 ,镁含量不同的各种含镁Al 2 8Cu 5Si钎料在Al基复合材料连接的温度范围内都不能润湿SiC陶瓷表面 ;配合QJ2 0 1钎剂 ,Al 2 8Cu 5Si 2Mg钎料对 15 %SiCp 6 0 6 1Al复合材料具有良好的润湿性 ,但对 30 %SiCp 6 0 6 1Al复合材料却润湿不良 ;在加钎剂的情况下 ,钎料中的镁反而对在铝合金及铝基复合材料上的润湿性有不利影响 ;在Al 2 8Cu 5Si 2Mg钎料和 15 %SiCp 6 0 6The wettability of various aluminum base filler metals on SiC, 6061 and SiC p/6061 composites is investigated. The results show that in furnace brazing,the compositions of filler metal and flux,the heating temperature and holding time, matching of melting temperature of filler metal and flux will influence the wettability of aluminum base filler metals, and in vacuum brazing , Al 28Cu 5Si filler metals containing magnesium behave non wettable to SiC substrates in the temperature range in which the composites can be brazed, while matched with QJ201 flux, Al 28Cu 5Si 2Mg filler metal becomes wettable to 15% SiC P/6061 composites, but under wettable to 30% SiC P/6061 composites. On the contrary, Mg in the aluminum base filler metals will be detrimental to wettability on aluminum alloys and aluminum matrix composite when flux is adopted. It is found that the segregation of SiC particulates appears on the brazing interface of Al 28Cu 5Si 2Mg filler metal and 15% SiC P/6061 composites.

关 键 词：铝基钎料 铝基复合材料 润湿性 

分 类 号：TG454[金属学及工艺—焊接]