To confirm sub-regular solution model valid for predicting the activity of component in binary oxide systems, seven systems in the whole concentration and twelve systems presenting saturation concentration have been studied. The total average relative errors of component 1 and 2 are 3.2 % and 4.1% respectively by application of the sub-regular solution model into the systems within the whole concentration. However, the total average relative errors are 16 % and 1088 % in the systems presenting saturation concentration. The results show that sub-regular solu- tion model is not good for predicting the systems presenting saturation concentration, especially for the systems con- taining acidic or neutral oxide. The reason may be that the influence of the two types of oxide on the configuration is greater in binary oxide systems. These oxides can be present in the form of complex anion partly, Si-O, Al-O, Ti-O and so on, for example （SiO4）4-. That is contrary to sub-regular solution model which is supposed that the oxide systems consist of cation and O2-. But compared with regular solution model and quasi-regular solution model, sub- regular solution model is closer to the characteristics of actual solution and the calculated results are superior.
参考文献
| [1] | Hildebrand J H;Scott R L.Regular Solution[M].New Jersey..Englewwood Cliffs,1962 |
| [2] | Lumsden J.Physical Chemistry of Process Metallurgy PartI[M].New Jersey:Englewwood Cliffs,1961 |
| [3] | Banya S .Mathematical Expression of Slag-Metal Reactions in Steelmaking Process by Quadratic Formalism Based on the Reg- ular Solution Model[J].ISIJ International,1993,33(02):2. |
| [4] | WEI Qing-cheng.Metallurgy Thermodynamics[M].重庆:重庆大学出版社,1996 |
| [5] | Hardy H K .A "Sub-Regular" Solution Model and Its Applica- tion to Some Binary Alloy Systems[J].Acta MetaUurgica,1953,1:202. |
| [6] | Bing ZX;Chang JG;Kai T;Lun XJ;Zhong DW;Di XK .A sub-regular solution model used to predict the component activities of quaternary systems[J].Calphad: Computer Coupling of Phase Diagrams and Thermochemistry,1997(3):301-309. |
| [7] | ZHANG Xiao-bing;JIANG Guo-chang;XU Kuang-di .High Order Sub-Regular Solution Model and Itrs Application in the Calculation of Component Aetivites of MnO-SiO2-AI2O3-CaO Molten Slag[J].Aeta Metallurgiea Siniea,1997,33(10):1085. |
| [8] | 唐恺,蒋国昌,周国治,丁伟中,李福燊,徐匡迪.冶金熔渣热力学性质的SReS模型[J].金属学报,2000(05):502-506. |
| [9] | Rog G;Kozlowska A .Determination of the Activities in {xMnOq-,(1--x)NiO} by Solid-Electrolyte Galvanic Cell in the Temperature Range 973 K to 1 173 K[J].Chem Thermo- dynamic,1997,29:305. |
| [10] | Tang H;Tsai T;Muan A .Activity-Composition Relations in the Systems[J].Journal of the American Ceramic Society,1992,75(06):1472. |
| [11] | Wu P;Eriksson G;Pelton A D .Critical Evaluation and Opti- mization of the Thermodynamic Properties and Phase Diagrams of the CaO-FeO,CaO-MgO,CaO-MnO,FeO-MgO,FeO- MnO,and MgO-MnO Systems[J].Journal of the American Ceramic Society,1993,76(08):2065. |
| [12] | Eriksson G;Pelton A D .Critical Evaluation and Optimization of the Thermodynamic Properties and Phase Diagrams of the MnO-TiOz,MgO-TiO2,FeO-TiO2,Ti203-TiOz,Na20- TiOz,and K2O-TiO2Systems[J].Metallurgical Transac- tions,1993,24B(05):795. |
| [13] | Raghavan S;Iyengar G N K;Abraham K P .Determination of the Thermodynamic Properties of { XMgOq-,(1 -- X)MnO}(s,sln)From a Solid-Electrolyte Galvanic Cell in the Temperature Range 1 163 to 1 318 K[J].Journal of Chemical Thermodynamics,1985,17(06):585. |
| [14] | Rein R H;Chipman J .Activities in the Liquid Solution SiO2- CaO-MgO-A1203 at 1600 ℃[J].Trans Met Soe AIME,1965,233(02):415. |
| [15] | Wang J.Schlaekenatlas Slag Atlas[M].Beijing:Metallurgi- cal Industry,1987 |
| [16] | Rao B K D P;Gaskell D R .The Thermodynamic Properties of Melt in the System MnO-SiO2[J].Metallurgical and Materials Transactions,1981,12B:469. |
| [17] | Kambayshi S;Kato E .A Thermodynamic Study of(Magnesi- um Oxide+Silicon Dioxide)by Mass Spectrometry at 1 973 K[J].Journal of Chemical Thermodynamics,1984,16:241. |
| [18] | Leung A;Thompson W T .A Thermodynamic Study of PbO- GeO2 Melts[J].Canadian Metallurgical Quarterly,1976,15:227. |
| [19] | Reyes R A;Gaskell D R .The Thermodynamic Activity of ZnO in Silicate Melts[J].Metallurgical and Materials Transactions,1983,14B(04):725. |
| [20] | Abtaham K P;Davies M W;Richarson F D .The Solubility of Calcium Sulphide and Activity in MnO~SiOz Melts[J].Journal of the Iron and Steel Institute,1960,196:82. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%