【摘要】：采用坩堝法研究了鋁合金液對4種鋁硅質(zhì)耐火澆注料的侵蝕行為,用XRD、SEM和能譜對侵蝕后的坩堝試樣進行了物相和顯微結(jié)構(gòu)分析。結(jié)果表明:在本實驗溫度范圍內(nèi),從氣孔率判斷,在1 200℃熱處理后試樣有一定程度的燒結(jié),常溫抗折和耐壓強度均隨處理溫度的上升而增大;澆注料的抗鋁液侵蝕性與其Al_2O_3含量和顯氣孔率密切相關(guān),Al_2O_3含量越高、氣孔率越低的試樣抗?jié)B透和抗侵蝕性能較好;鋁合金液在850℃時與耐火材料中的Si O_2反應(yīng)生成Al_2O_3和Si,伴隨體積收縮,導致耐火材料開裂損毀;耐火材料反應(yīng)層中顆粒和基質(zhì)均被侵蝕,侵蝕后氣孔被填充變得更加致密,在間歇式工況條件下容易產(chǎn)生結(jié)構(gòu)剝落。同時,侵蝕過程中,鋁合金液中的Zn蒸汽逸出,在過渡層富集。
[Abstract]:The corrosion behavior of aluminum alloy solution to four kinds of aluminosiliceous refractory castables was studied by crucible method. The phase and microstructure of the corroded crucible samples were analyzed by XRDX SEM and energy spectrum. The results show that the samples are sintered to a certain extent after heat treatment at 1 200 鈩，

本文編號：2122602