中南大学学报（自然科学版）2011，Vol.42Issue(3)：636-643,8.
主晶相为Y3Al5O12的Y-Al-Si-O-N微晶玻璃的制备
Preparation of Y-Al-Si-O-N glass-ceramics with Y3Al5O12 as major phase
摘要
Abstract
Different heat treatments were performed on an oxynitride glass with composition of Y28A124Si48O83N17 in the Y-A1-Si-O-N system to prepare Y3Al5O12-based glass-ceramics. Heat treatment schedules were determined by differential scanning calorimetry. Crystalline phases in the glass-ceramics were identified by X-ray diffraction and energy dispersion spectrometer. Microstructures of the glass-ceramics were observed by scanning electron microscopy. YAG appears in all glass-ceramics obtained after heat treatments at or below 1 200 ℃ as the only crystalline phase. Glass-ceramics contain YAG major phase and a small amount of O'-Sialon phase when heat treatment temperatures are higher than 1 200 ℃.With the increase of heat treatment temperature, grain size of the dendrite crystal which corresponds to YAG phase increases and the dendrite branches get thickened. Moreover, grain size of YAG phase resulting from two-stage heat treatment is much smaller than that of YAG phase obtained by one-stage heat treatment.关键词
Y-Al-Si-O-N/微晶玻璃/热处理/析出相/显微结构分类
化学化工引用本文复制引用
李秀英,卢安贤..主晶相为Y3Al5O12的Y-Al-Si-O-N微晶玻璃的制备[J].中南大学学报（自然科学版）,2011,42(3):636-643,8.基金项目
国防军工新材料资助项目(JPPT-115-198) （JPPT-115-198）
