采用扩散偶的方法研究了Fe2O3和TiO2在1373K空气气氛不同时间下的固相反应.采用场发射扫描电镜对扩散偶表面形貌进行观察和线扫描能谱分析.根据线扫描能谱分析所得的组元扩散浓度曲线,用DenBroeder改进的Boltzmann-Matano法计算出Fe2O3/TiO2扩散偶的互扩散系数,结果发现互扩散系数与Fe3+浓度呈一定的线性关系,并随着Fe浓度的升高而增大,同时用空位扩散机理讨论了Fe2TiO5的形成.
参考文献
| [1] | 唐明权 .攀枝花钒钛铁资源的二次综合利用[J].矿业工程,2003,23(02):32. |
| [2] | Jena B C;Dresler W;Reilly T G .Extraction of titanium,vanadium and iron from titanomagnetlte deposits at pipestone lake,Manitoba,Canada[J].Mine Eng,1995,8(1-2):159. |
| [3] | 杜鹤桂.高炉冶炼钒钛磁铁矿原理[M].北京:科学出版社,1996:124. |
| [4] | Hirota K;Bradt R C .Sintering and synthesis of the pseudobrookite oxide(Fe2TiO5)by the solid state reaction[J].Analytical Sciences,1991,7(02):1275. |
| [5] | 陈茜;于然波;et a1 .钛铁矿预氧化及还原过程中的物相转变研究[J].中国稀土学报,2008,26(01):560. |
| [6] | Bonamali Pal;Maheshwar Sharon;Gyoichi Nogami .Preparation and characterization of TiO2/Fe2O3 binary mixed oxides and its photocatalytic properties[J].Materials Chemistry and Physics,1999,59(03):254. |
| [7] | Peiteado M;Caballero AC;Makovec D .Diffusion and reactivity of ZnO-MnOx system[J].International Journal of Quantum Chemistry,2007(9):2459-2464. |
| [8] | HIROYUKI FUKUYAMA;Md. KHALID HOSSAIN;KAZUHIRO NAGATA .Solid-State Reaction Kinetics of the System CaO-FeO[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2002(2):257-264. |
| [9] | Matano C .On the relation between the diffusion-coefficients and concentrations of solid metals(The nickel-copper system)[J].Japanese Journal of Applied Physics,1933,8(03):109. |
| [10] | den Broeder F J A .A general simplification and improvement of the Matano-Boltzmann method in the determination of the interdiffusion coefficients in binary systems[J].Scripta Metallurgica,1969,3:321. |
| [11] | Macchesney J B;Arnulf Muan .Studies in the system iron oxide-titanium oxide[J].American Mineralogist,1959,44(9-10):926. |
| [12] | P. ZHANG;T. DEBROY;S. SEETHARAMAN .Interdiffusion in the MgO-Al_2O_3 Spinel With or Without Some Dopants[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,1996(8):2105-2114. |
| [13] | Kazuhiro Nagata;Ryou Nishiwaki;Yukio Nakamura et al.Kinetic mechanisms of the formations of MgCr2O4 and FeCr2O4 spinels from theirmetal oxides[J].Solid State Irons,1991,49(100):161. |
| [14] | Kazuhiro Nagata;Ryou Nishiwaki;Toshio Maruyama .Mechanisms of the formations of MgCr2O4 spinel from MgO and Cr2O3[J].Tetsu To Hagane-Journal of the Iron and Steel Institute of Japan,1991,77(06):783. |
| [15] | Donald L Branson .Kinetics and mechanisms of the reaction between zinc oxide and aluminum oxide[J].Journal of the American Ceramic Society,1965,48(11):591. |
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