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铁对R_2O-CaO-gO-Al_2O_3-SiO_2系玻璃微晶化的影响
引用本文:吴丹丹,俞平利.铁对R_2O-CaO-gO-Al_2O_3-SiO_2系玻璃微晶化的影响[J].陶瓷学报,2006(4).
作者姓名:吴丹丹  俞平利
作者单位:华侨大学材料科学与工程学院 泉州:362021
摘    要:就石材锯切粉在微晶玻璃中应用的主要问题—铁对析晶的影响展开研究。结果表明,少量铁(<2mol%)的引入,可能引起析晶参数的升高,但外加铁含量超过2mol%时均可降低析晶参数,并使起始析晶至析晶峰的温度区间(Tp-Tg)变窄;外加铁量<2mol%时,不同含铁量配方的(Tp-Tg)区间重叠显著,可以采用同一温度晶化处理;配方含铁与否对主晶相没有明显影响,但影响玻璃的析晶能力,铁含量<2mol%时,使玻璃体析晶能力增加,接近或大于3mol%时,玻璃析晶能力降低;微粉制备微晶玻璃可以大幅度缩短晶化时间。

关 键 词:石材锯切粉  微晶玻璃    析晶参数

THE EFFECTS OF Fe_2O_3 ON THE CRYSTALLIZATION OF R_2O-CaO-MgO-Al_2O_3-SiO_2 GLASS-CERAMICS
Wu Dandan Yu Pingli.THE EFFECTS OF Fe_2O_3 ON THE CRYSTALLIZATION OF R_2O-CaO-MgO-Al_2O_3-SiO_2 GLASS-CERAMICS[J].Journal of Ceramics,2006(4).
Authors:Wu Dandan Yu Pingli
Abstract:In this paper,a main application of stone-powder in glass-ceramics was investigated.The results showed:When less than 2mol% Fe_2O_3 was introduced into glass,the crystallization parameter of glass-ceramics was possibly increased,and almost all the samples' temperature range from Tp to Tg overlapped partly,that means glass samples can be crystallized at the same temperature.When more than 2mo1% Fe_2O_3 was introduced into glass,the crystallization parameter was decreased,and the temperature range from Tp to Tg was narrowed,that indicated the crystallization capability of glass was increased.In addition,added Fe_2O_3 content has not distinct impact on the main crystalline phases of glass-ceramics,and crystallization time can be greatly decreased by using micro-powder to prepare glass-ceramics.The above results were quite useful for the further application of stone-power.
Keywords:stone-power  glass-ceramics  oxide of iron  crystallization parameter
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