摘要
以80%～90%板状刚玉、10%～20%金属铝为主要原料,采用1100℃的高温氮化反应烧结工艺,并经800℃的表面氧化处理,可制得以金属铝、氮化铝为结合相、以刚玉为主晶相的Al-AlN-Al2O3复相结构材料。以其作为钢包滑动水口的滑板材质,取得了良好的应用效果。试验结果表明:熔融金属铝对刚玉颗粒间隙的填充,金属铝氮化及使用时金属铝氧化过程的体积膨胀效应,是获得滑板致密组织结构的主要原因。Al-AlN-Al2O3复相滑板的抗钢液侵蚀性能及抗热震性能优良,其使用寿命是Al2O3-C滑板的2倍。
Using 80%～90% tabular corundum and 10%～20% Al as the main material, a multiphase Al-AlN-Al_2O_3 material whose main crystalline phase is corundum and the bond phases are Al and AlN can be prepared by nitridation-sintering at 1 100 ℃ and surface oxidation treatment under 800 ℃. Made multiphase Al-AlN-Al_2O_3 of sliding gate of steel ladle, obtained excellent application effect. The experiments show that the slide plate is of compact structure because of the molten Al fill in the gaps of corundum grains and the bulk expansion with the formation of AlN and Al_2O_3. The Al-AlN-Al_2O_3 multiphase slide plate has excellent corrosion resistance and thermal shock resistance, so its service life is two times longer than that of Al_2O_3-C slide plate.
出处
《钢铁钒钛》
CAS
北大核心
2004年第4期24-28,共5页
Iron Steel Vanadium Titanium
基金
国家自然科学基金资助项目(50332010)
河北省自然科学基金资助项目(E2004000436)。
