本文選題：硅粉加入量 + 碳纖維復(fù)合鋁碳耐火材料��； 參考：《硅酸鹽通報》2017年06期

【摘要】：以電熔白剛玉、石墨、硅粉和碳纖維為主要原料,通過固定剛玉細(xì)粉和硅粉總含量(29%),改變硅粉加入量(0~20%)制得了六組碳纖維增強鋁碳耐火材料。采用XRD、SEM及EDS等研究了硅粉加入量對不同溫度處理后材料物相組成、顯微結(jié)構(gòu)及強度的影響。結(jié)果表明:(1)220℃熱處理后,硅粉含量低于8%時,抗折耐壓強度變化不大;硅粉的含量高于8%時,抗折與耐壓強度均降低。(2)1400℃熱處理后,當(dāng)硅粉含量從0增加到8%時,耐壓強度與抗折強度均得到明顯改善。而當(dāng)硅粉量進一步增加時,試樣出現(xiàn)裂紋,強度顯著下降。(3)綜合考慮,硅粉的最佳加入量為8%,此時經(jīng)220℃、1400℃熱處理后材料具有最好的抗折強度及耐壓強度。
[Abstract]:Using fused white corundum, graphite, silica fume and carbon fiber as main raw materials, six groups of carbon fiber reinforced aluminum carbon refractories were prepared by fixing the total content of corundum fine powder and silica powder and changing the content of silica powder. The effects of the amount of silicon powder on the phase composition, microstructure and strength of the materials after different temperature treatments were studied by means of XRDX SEM and EDS. The results show that after heat treatment at 220 鈩，

本文編號：2016270