中文摘要：

以铝灰、粉煤灰和碳黑为主要原料，采用碳热铝热复合还原氮化工艺制备了Sialon粉体。研究了原料组成（Si／Al比分别为1．5、1和0．27）、碳黑含量（分别为10％、17％、22％和27％）以及合成反应温度（分别为1400，1450，1500℃）对生成物相的影响。结果表明，合成温度为1450℃，可以得到较纯的物相；随着还原剂碳黑含量的增加，使还原氮化反应进行的更为充分；在原料中Si／Al比为1时，加入17％的碳黑可以得到主要物相为Si3Al3O3N5（β-Sialon，z=3）和SiAl4O2N4（15R）的产物；在原料中Si／Al比为1．5时，即加入80％的粉煤灰，在1450℃可以制备较纯的Si3Al3O3N5粉。

英文摘要：

Sialon powders were synthesized using aluminium dross, fly ash and carbon black as main starting materials by the C-Al compound reduction and nitridation process. The effects of different factors on the phase of products were studied, such as the compositions of raw material （the proportion of Si/Al is 1.5, 1 and 0.27）, the content of carbon black （10%, 17%, 22% and 27%） and heating temperature （1400, 1450 and 1500℃）. The results show that the relatively pure Sialon powders can be obtained at 1450 ℃; the process of reduction-nitridation is effectively accelerated by the increase of the carbon black content. When the proportion of Si/Al is about 1, the main phases of products are Si3Al3O3Ns（β-Sialon, z=3） and SiAl4O2N4（15R） using 17% carbon black; at 1450℃, a nearly pure Sialon powder （ the main phase is Si3Al3O3Ns） can be obtained when the proportion of Si/Al is about 1.5 and the fly ash content is 80%.