【摘要】 研究了α－Ｓｉａｌｏｎ柱状晶制备过程．结果表明，α－Ｓｉａｌｏｎ柱状晶可以通过无压烧结和酸洗的方法制备得到．α－Ｓｉａｌｏｎ柱状晶形貌与添加剂种类有关，选用轻稀土氧化物为添加剂制得的α－Ｓｉａｌｏｎ柱状晶具有较小的直径和较大的长径比，而选用重稀土氧化物为添加剂的α－Ｓｉａｌｏｎ柱状晶的直径较大，长径比较小．文中就添加剂种类对α－Ｓｉａｌｏｎ柱状晶形貌的影响进行了讨论．更多还原

【Abstract】 Rod-like a-Sialon crystal particles were obtained by a method of pressure-less sintering and subsequent acid treatments. The reasons for the effect of additives on the morphology of a- Sialon were discussed. The morphology of a-Sialon particles can be controlled with different additives. a-Sialon with light rare earth oxides as additives has a-smaller diameter and a larger aspect ratio than that with heavy rare earth oxides as additives.更多还原