在光学显微镜下观察耐火材料试样的裂纹扩展情况,该试样为:莫来石红柱石原砖、经历过热震试验的莫来石红柱石砖,考察热震对莫来石红柱石砖裂纹扩展的影响。
Crack propagation of the refractory samples were observed by the optical microscope. The samples are bracket bricks made of mullite and andalusite and suffered thermal shock. The influence of thermal shock on samples was investigated.