摘要
采用热压烧结法制备了Al-12Si自钎剂钎料环,对不同烧结压力下钎料的润湿性、显微硬度和显微组织进行了研究.结果表明,自钎剂钎料润湿性环随着烧结压力升高呈现上升趋势,在烧结压力为222 MPa时铺展面积达到152 mm2;随着烧结压力的增大,自钎剂钎料密度、显微硬度逐渐增大,但上升趋势变缓;钎料显微组织主要是灰色基体上均匀分布着黑色大块状相和白色小颗粒;XRD结果显示自钎剂钎料只有α-Al固溶体,初晶硅和Nocolok钎剂三种物相,热压烧结法制备自钎剂钎料未发生氧化、水解等反应,加上硅的活化作用保证了钎料高活性.
The ring of Al-12 Si self-fluxing filler metals has been prepared by hot pressed sintering. The wetting property,microhardness,microscopic structure of self-fluxing on different sintering pressure were studied. The results showed that the spreading areas of the self-fluxing filler metals were affected with sintering pressure. And the spreading areas of the self-fluxing filler metals was up to 152 mm2 when the sintering pressure was at 222 MPa. With increasing of the sintering pressure,the density,microhardness of the self-fluxing filler metals increased,but the tendency of increasing became slowly. The microscopic structure of self-fluxing filler metals was composed of black large lump and white small particles which was evenly distributed on the gray matrix; XRD results showed that self-fluxing filler metals was only composed of α-Al solid solution,primary crystal silicium and Nocolok filler metals,which denoted that the filler metals prepared by hot pressed sintering did not occur oxidation reactions and hydrolysis reactions. The activation of silicium ensured the high activity of filler metals.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2015年第3期97-100,6,共5页
Transactions of The China Welding Institution
基金
国际科技合作专项资助项目(2014DFR50820)
华南理工大学开放基金资助项目(2013001)
关键词
自钎剂钎料
铝及其合金
铝硅钎料
润湿性
self-fluxing filler metal,Al and Al alloy,Al-Si filler metal,wettability
