铝合金熔炼炉用铝硅质浇注料的侵蚀行为研究
发布时间：2018-07-14 18:39
【摘要】：采用坩埚法研究了铝合金液对4种铝硅质耐火浇注料的侵蚀行为,用XRD、SEM和能谱对侵蚀后的坩埚试样进行了物相和显微结构分析。结果表明:在本实验温度范围内,从气孔率判断,在1 200℃热处理后试样有一定程度的烧结,常温抗折和耐压强度均随处理温度的上升而增大;浇注料的抗铝液侵蚀性与其Al_2O_3含量和显气孔率密切相关,Al_2O_3含量越高、气孔率越低的试样抗渗透和抗侵蚀性能较好;铝合金液在850℃时与耐火材料中的Si O_2反应生成Al_2O_3和Si,伴随体积收缩,导致耐火材料开裂损毁;耐火材料反应层中颗粒和基质均被侵蚀,侵蚀后气孔被填充变得更加致密,在间歇式工况条件下容易产生结构剥落。同时,侵蚀过程中,铝合金液中的Zn蒸汽逸出,在过渡层富集。
[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，
本文编号：2122602
[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，
本文编号：2122602
本文链接：https://www.wllwen.com/kejilunwen/huaxuehuagong/2122602.html
