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概述了Ｓｉａｌｏｎ陶瓷材料制备方面的研究。以高岭土为主要原料，采用碳热还原氮化法合成的Ｓｉａｌｏｎ粉末为主要原料，分别添加Ｙ２Ｏ３Ａｌ２Ｏ３系与Ａｌ２Ｏ３ＭｇＯ系两种烧结助剂后进行充分混合，混合物粉末在钢模中冷压成两种压坯试样ａ和ｂ，然后在Ｎ２气氛中进行无压烧结。对烧成温度与烧结体体积密度的关系，烧结助剂的作用以及Ｓｉａｌｏｎ粉末无压烧结致密化过程进行了重点讨论。实验结果表明，分别添加１０％Ｙ２Ｏ３５％Ａｌ２Ｏ３和１０％Ａｌ２Ｏ３５％ＭｇＯ（均为质量分数，％）两种烧结助剂的试样ａ和ｂ分别在１６２０℃和１５９０℃烧成温度下，获得了致密的Ｓｉａｌｏｎ陶瓷材料。并且建立了Ｓｉａｌｏｎ粉末无压烧结致密化模型，即ｌｇ（ΔＶ／Ｖ０）∝ｌｇｔ，其致密化过程分为颗粒重排与溶解析出两个阶段，且扩散为全过程的控制性步骤。
An overview of Sialon ceramic material preparation research. Using kaolin as the main raw material, the Sialon powder synthesized by carbothermal reduction-nitriding method was used as the main raw material, and two kinds of sintering aids, Y2O3-Al2O3 and Al2O3-MgO, were added respectively and mixed thoroughly. The mixture powder was cold in a steel mold Compression into two compact samples a and b, followed by pressureless sintering in an N2 atmosphere. The relationship between sintering temperature and bulk density, the role of sintering aids, and the densification of Sialon powder under pressureless sintering were discussed. The experimental results show that the samples a and b with 10% Y2O35% Al2O3 and 10% Al2O35% MgO (both are mass fraction,%) were sintered at 1620 ℃ and 1590 ℃ respectively Under the access to a dense Sialon ceramic material. The compact model of Sialon powder without pressure sintering was established, namely lg (ΔV / V0) αlgt. The densification process was divided into two stages of particle rearrangement and dissolution-precipitation, and the diffusion was the control step of the whole process.