Formation and dispersal of rod-like α-SiAlON seed crystals synthesized by combustion method

来源期刊：中国有色金属学报(英文版)2005年第z3期

论文作者：傅仁利 J.M.F.Ferreira 杨克涛 陈克新

文章页码：439 - 442

Key words：rod-like seed crystals； Y-α-SiAlON； combustion synthesis

Abstract: Rod-like single-phase seed crystals of yttrium-α-SiAlONs were synthesized by combustion synthesis method. The XRD patterns, the morphologies of products and formation mechanism were investigated. The SEM observation of crystals exhibits well developed elongated hexagonal crystals with highly agglomerative features, assigned to pure and well-crystallized α-SiAlON. After special chemical treatments and water washing, the powders are well dispersed and still keep elongated hexagonal crystals, and the XRD pattern shows that the rod-like structure is crystalline yttrium-α-SiAlON with only a trace of β-SiAlON.