Mg取代Y对Y-Mg-Si-Al-O-N氧氮玻璃性质的影响  

INFLUENCE OF Mg SUBSTITUTION FOR Y ON PROPERTIES OF Y–Mg–Si–Al–O–N OXYNITRIDE GLASSES

作　　者：李秀英[1] 卢安贤[1] 肖卓豪[1] 左成钢[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083

出　　处：《硅酸盐学报》2008年第10期1458-1462,共5页Journal of The Chinese Ceramic Society

基　　金：国防军工新材料资助项目(JPPT–115–198)。

摘　　要：为了研究Y–Si–Al–O–N玻璃中阳离子的组成和配比对玻璃的热性能、机械性能和化学稳定性的影响,通过Mg取代Y–Si–Al–O–N玻璃中的部分Y,制备了Y–Mg–Si–Al–O–N玻璃样品。用X射线衍射仪、差示扫描量热仪、金相显微镜和红外吸收光谱仪对样品进行了分析。结果表明:与Y–Si–Al–O–N氧氮玻璃相比,Y–Mg–Si–Al–O–N氧氮玻璃的玻璃化温度和抗20%HF腐蚀能力均急剧降低,显微硬度和抗弯强度则明显增强;Y–Mg–Si–Al–O–N玻璃开始析晶的温度大大降低,析晶温度范围明显变宽,析晶能力明显增强。Y-Mg-Si-Al-O-N glasses were prepared by replacement of partial Y by Mg in Y-Si-Al-O-N glasses. The influences of different cation composition and ratio of the glasses on the thermal properties, mechanical properties and chemical durability were studied by using X-ray diffractometer, differential scanning calorimeter, metallurgical microscope and infrared absorption spectroscopy. The results indicate that in comparison with Y-Mg-Si-Al-O-N glasses, the glass transition temperature and chemical durability （in 20%HF） of Y-Mg-Si-Al-O-N glasses decrease dramatically, but the micro hardness and bending strength increase significantly. Y-Mg-Si-Al-O-N glasses have much lower crystallization temperature and wider crystallization range, which makes the crystallization ability of Y-Mg-Si-Al-O-N glasses much greater than that of Y-Mg-Si-Al-O-N glasses.

关 键 词：氧氮玻璃 物理性质 化学稳定性 结构 析晶 

分 类 号：TQ171.1[化学工程—玻璃工业]