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利用高分辨率的Ｇｕｉｎｉｅｒ－Ｈａｇｇ相机和计算机控制的底片扫描及数据处理程序系统，测定了复合添加，组份为（Ｃａ０．５Ｍｇ０．５）xＳｉ１２－３ｘAl3xＯｘＮ１６－ｘ（ｘ＝０．３、０．６、１．０和１．４）的α－Ｓｏａｌｏｎ的晶胞参数．材料由热压工艺制备而得．研究结果表明，当ｘ≥１．０时，材料的主晶相为α－Ｓｉａｌｏｎ和含Ｍｇ的ＡlＮ多型体．（Ｃａ，Ｍｇ）－α－Ｓｉａｌｏｎ的晶胞参数明显低于相同组份下的Ｃａ－α－Ｓｉａｌｏｎ的晶胞参数·ＥＤＡＸ的结果进一步给出固溶进入α－Ｓｉａｌｏｎ的包括名义组份中９０％的Ｃａ＋＋和少量的Ｍｇ＋＋，而大部分Ｍｇ＋＋进入ＡlＮ多型体，这一结果为净化α－Ｓｉａｌｏｎ陶瓷的晶界提供了新的有效途径．
Using high resolution Guinier-Hagg camera and computer-controlled film scanning and data processing system, the composite additive was determined to have the composition of (Ca0.5Mg0.5) xSi12-3xAl3xOxN16-x (x = 0.3,0. 6, 1.0 and 1.4) α-Soalon unit cell parameters. Materials prepared by hot pressing process. The results show that when x≥1.0, the main crystalline phase of the material is α-Sialon and AlN polytype containing Mg. The unit cell parameters of (Ca, Mg) -α-Sialon are significantly lower than the unit cell parameters of Ca-α-Sialon under the same composition. The results of EDAX further give the results of solid solution into α-Sialon, % Of Ca ++ and a small amount of Mg ++, while most of Mg ++ enters the AlN polytype. This result provides a new effective way to purify the grain boundaries of α-Sialon ceramics.