(1. 廣西大學(xué) 化學(xué)化工學(xué)院， 南寧 530004;
2. 武漢工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院， 武漢 430070)
摘 要: 以赤泥為主要原料， 制備了黑色玻璃。應(yīng)用差熱分析(DTA), 利用AugisBennett方程和修正的Kissinger方程研究了玻璃析晶動(dòng)力學(xué)，由兩種方法計(jì)算得到的析晶活化能基本相同，同時(shí)采用 ky ( T )= A ·exp［(- E/RT)×(T / Tp)］為判據(jù)，比較了鐵含量對(duì)玻璃穩(wěn)定性的影響。 結(jié)果表明： 鐵含量增高， 玻璃穩(wěn)定性下降， 有利于玻璃的晶化， 高鐵含量玻璃中 c (Fe2+ )/ c (Fe3+ )比值更接近于Fe3O4的比值，不同價(jià)態(tài)鐵的相對(duì)含量不同， 玻璃穩(wěn)定性不同。
關(guān)鍵字: 赤泥； 玻璃穩(wěn)定性； 析晶活化能
（1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R.China;
2. College of Materials Science and Engineering, Wuhan University of Technology,Wuhan 430070, P.R.China）
Abstract: The crystallization kinetics of glassesusing red mud as raw materials was investigated by different thermal analysis(DTA). DTA experiment results were analyzed by AugisBennett method and modified Kissinger method. The crystallization activation energies obtained from both AugisBennett method and modified Kissinger method are almost the same. The stability of red mud glasses was evaluated by the crystallization kinetics criterion ky ( T )= A ·exp［(- E/RT )×( Δ T/Tp )］. The results showed that the stability of red mud glasses is decreased with the increase of Fe2O3 content, thus make the glasses be favorable for crystallization. The ratio of c (Fe2+) to c (Fe3+) in the glass of higher Fe2O3 content is more closeto the ratio of Fe3O4 . The stability of red mud glasses changes resultingin various ratio of c (Fe2+) to c (Fe3+ ).
Key words: red mud; stability of glass; crystallization activation energy
