| Foitite电气石的热处理及显微结构特征 |
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| 引用本文： | 刘来宝,何登良.Foitite电气石的热处理及显微结构特征[J].材料热处理学报,2012,33(3):16-21. |
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| 作者姓名： | 刘来宝 何登良 |
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| 作者单位： | 1. 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,西南科技大学,四川绵阳621010
2. 绵阳师范学院化学与化学工程系,四川绵阳621000／四川大学材料科学与工程学院,四川成都610064 |
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| 基金项目： | 国家自然科学基金，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，先进建筑材料四川省重点实验室开放项目 |
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| 摘 要： | 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)。
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| 关 键 词： | 电气石 热处理 显微结构特征 |
Heat treatment and microstructure characteristics of Foitite tourmaline |
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| LIU Lai-bao,HE Deng-liang.Heat treatment and microstructure characteristics of Foitite tourmaline[J].Transactions of Materials and Heat Treatment,2012,33(3):16-21. |
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| Authors: | LIU Lai-bao HE Deng-liang |
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| Affiliation: | 2,3(1.State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials,Southwest University of Science and Technology,Mianyang 621010,China;2.Department of Chemistry,Mianyang Normal University,Mianyang 621000,China;3.College of Materials Science and Engineering, Sichuan University,Chengdu 610064,China) |
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| Abstract: | Foitite tourmaline was heated at 400-1000 ℃ for 2 h.Effect of heat treatment on tourmaline powder phase structure,surface structure of the foitite tourmaline was studied by means of X-ray diffraction,Fourier transform infrared absorption spectroscopy and laser Raman spectroscopy.The results show that tourmaline cell volume decreases with increasing the heat treatment temperature,and has a minimum value at 700 ℃.The heat treatment temperature has great influence on the surface electrical properties of tourmaline,when the temperature reaches 500 ℃,Zeta potential value is up to-48 mV.After heat treatment,the phase of tourmaline has been changed from Foitite tourmaline into Bouguer tourmaline,when the temperature is higher than 900 ℃,tourmaline decomposes to form Fe2O3 and Al4B2O9.Heat treatment can not only oxide Fe2+ to Fe3+,but also change the site of ions in the structure of tourmaline(Y,Z position). |
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| Keywords: | tourmaline heat treatment microstructure characteristics |
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