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以α-Al2 O3、金红石型TiO2和MgO为初始粉料，采用凝胶注模成形工艺制备了Al2（1－x）MgxTi1＋xO5固溶体陶瓷。将陶瓷试样浸泡到750℃的铝熔体中20 min，取出后用自来水冷却，测试热震后试样的残余抗弯强度，并研究了x值变化对固溶体陶瓷抗热震性的影响。结果表明，随x值的增大，陶瓷的抗热震性先快速提高后趋于缓慢。当x＝15％时，试样经5次热震后强度保持率为87％，具有优良的抗热震性能。“,”The Al2(1-x)MgxTi1+xO5 solid solution ceramics were prepared by gelcasting withα-Al2 O3 ,ru-tile-TiO2 and MgO as the raw powder.Samples prepared were soaked in the aluminum melt at 750 ℃for 20 min,and then cooled with water.The residual strength of the samples after five thermal shock was tested.Influence of x values on the thermal shock resistance of the solid solution was investigated.The results indicate that with the increase of x values,the thermal shock resistance is increased quickly first-ly and then slowly.When x value is 0 .1 5 ,the strength retention rate of the samples prepared keeps 87% after 5 thermal shock,showing excellent thermal shock resistance.