Foitite电气石的热处理及显微结构特征Heat treatment and microstructure characteristics of Foitite tourmaline
刘来宝,何登良
摘要(Abstract)：
将Foitite电气石在400～1000℃×2 h进行焙烧处理。采用XRD、FTIR、RAMAN光谱等研究热处理对电气石粉体物相结构、表面结构的影响。结果表明:随着热处理温度升高,电气石晶胞体积逐渐减小,在700℃具有最小值;热处理温度对电气石的表面电性有较大影响,随温度升高,电气石的Zeta电位呈增大趋势,当温度达到500℃时,Zeta电位值最大为-47.5 mV;经过热处理后,电气石物相发生明显变化,由镁电气石转化为布格电气石,当温度高于900℃,出现烧结现象,电气石开始分解,分解产物为Fe2O3和Al4B2O9;热处理不仅可使电气石中的Fe2+氧化成Fe3+,还可改变不同价态铁离子在结构中的占位(Y、Z位置)。
关键词(KeyWords)： 电气石;热处理;显微结构特征
基金项目(Foundation): 国家自然科学基金(51004066);; 四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地开放课题基金(10ZXFK12,10ZXFK04);; 先进建筑材料四川省重点实验室开放项目(09ZXXK09)
作者(Author): 刘来宝,何登良
DOI: 10.13289/j.issn.1009-6264.2012.03.003
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