本文討論了熔融鋁合金与某些耐火氧化物之間的反应化学。将含有85％94和％99％Al_2O_3的高鋁磚、方鎂石磚和鎂氧尖晶石磚分別在含有O、％2.4％和7.7％鎂的三种鋁合金中浸漬48小时。这时所有的磚都变了顏色,虽然在1000℃氧化性气氛中重燒之后退色現象大部已消失。只有含氧化硅并含85％和94％Al_2O_3的磚才呈現出永久变暗黑的反应边緣。这些变暗黑区的X- This article discusses the reaction chemistry between molten aluminum alloys and some refractory oxides. High aluminum bricks, magnesia bricks and magnesia spinel bricks containing 85% 94 and 99% Al 2 O 3 were respectively immersed in three aluminum alloys containing 0%, 2.4% and 7.7% magnesium for 48 hours. At this moment all the bricks changed their color, although most of the discoloration disappeared after being burned in an oxidizing atmosphere at 1000 ° C. Only the bricks containing silicon oxide and containing 85% and 94% Al 2 O 3 showed the permanent darkened reaction edge. These dark areas of the X-