| Mg-Fe电气石氧化/还原热处理 |
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| 引用本文： | 王平,李学帅,周小美,黄新,李之锋,吴速英. Mg-Fe电气石氧化/还原热处理[J]. 材料热处理学报, 2010, 31(12) |
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| 作者姓名： | 王平 李学帅 周小美 黄新 李之锋 吴速英 |
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| 作者单位： | 江西理工大学材料与化学工程学院;赣州托玛琳环保科技有限公司; |
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| 基金项目： | 国家自然科学基金，江西赣州科技局项目 |
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| 摘 要： | 通过Mg-Fe电气石粉体在～800℃氧化/还原气氛热处理,得到电气石白度、Fe2+含量、负离子释放量、结构变化规律.氧化热反应过程中,认为O原子发生Frenkel Defect和"反Schottky Defect"并存,使得FeO→Fe2O3;还原反应过程中,O原子主要发生Schottky Defect效应,使得Fe2O3→FeO.通过模拟结构,设置极性基团[Na,Ca]/[Si-O4]6/[Fe2+,Mg-O6]3与电偶极矩-[Al,Fe3+-O6]-链,建立了电气石热释电效应微观机理模型.
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| 关 键 词： | 电气石 热处理 负离子浓度 热释电效应 |
Heat treatment of Mg-Fe tourmaline in oxidation/reduction atmosphere |
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| WANG Ping,LI Xue-shuai,ZHOU Xiao-mei,HUANG Xin,LI Zhi-feng,WU Su-ying. Heat treatment of Mg-Fe tourmaline in oxidation/reduction atmosphere[J]. Transactions of Materials and Heat Treatment, 2010, 31(12) |
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| Authors: | WANG Ping LI Xue-shuai ZHOU Xiao-mei HUANG Xin LI Zhi-feng WU Su-ying |
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| Affiliation: | WANG Ping1,LI Xue-shuai1,ZHOU Xiao-mei1,HUANG Xin2,LI Zhi-feng1,WU Su-ying1(1.School of Materials and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China,2.Ganzhou Tourmaline Environmental Protecting Science and Technology Ltd Co,China) |
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| Abstract: | The whiteness,structure,Fe2 + content and release of negative ions of Mg-Fe tourmaline heat treated in oxidizing/reducing atmosphere were examined by means of XRD,whiteness test,and an ambient air ion meter.In oxidation heating process,the Frenkel defect andreverse Schottky defectco-exist and transformation of FeO to Fe2 O3 takes place in tourmaline.In reduction heating reaction process,the main effect of Schottky defect occurrs and transformation of Fe2 O3 to FeO takes place in tourmaline.By simulating the... |
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| Keywords: | tourmaline heat treatment anion concentration pyroelectric effect |
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