利用液相沉淀方法制备了未掺杂、氧化钇掺杂和氧化钐掺杂的纳米级氧化锆粉体.实验结果表明,高的反应温度和煅烧过程中快的升温速度明显增加了前驱体溶液中单斜氧化锆的形核数.实验和密度泛函计算结果分析认为,高的反应温度和快的升温速度均是通过降低氧化锆前驱体网状结构的有序度来影响最终的氧化锆晶型.
参考文献
| [1] | 李汶军,施尔畏,郑燕青,陈之战,殷之文.氧化物晶体的成核机理与晶粒粒度[J].无机材料学报,2000(05):777-786. |
| [2] | Navio A;Colón G;Sáachez-soto P J et al.Effects of H2O2 and SO2-4 Species on the Crystalline Structure and Surface Properties of ZrO2 Processed by Alkaline Precipitation[J].Chemistry of Materials,1997,9:1256. |
| [3] | ángeles Díaz-Díez M;Macías-García A;Silvero G et al.Theoretical Study of the Molecular Structure for Zirconium Complexes[J].Ceramics International,2003,29:471. |
| [4] | Chen SG;Yin YS;Wang DP .Experimental and theoretical investigation on the correlation between aqueous precursors structure and crystalline phases of zirconia[J].Journal of Molecular Structure,2004(1/3):181-187. |
| [5] | Garvie R C .The Occurrence of Metastable Tetragonal Zirconia as a Crystallite Size Effect[J].Journal of Physical Chemistry,1965,69(04):1238. |
| [6] | Wu F;Yu S .Effects of H2SO4 on the Crystallization and Phase Transformation of Zirconia Powder in the Precipitation Processes[J].Journal of Materials Science,1990,25:970. |
| [7] | Caracoche M C;Rivas P C;Cervera M M et al.Nanostructural Study of Sol-gel-drived Zirconium Oxides[J].Journal of Materials Research,2003,18(01):208. |
| [8] | Stefano Fabris;Anthony T. Paxton;Michael W. Finnis .A stabilization mechanism of zirconia based on oxygen vacancies only[J].Acta materialia,2002(20):5171-5178. |
| [9] | SCHMID H K .Quantitative Analysis of Polymorphic Mixes of Zirconia by X-ray Diffraction[J].Journal of the American Ceramic Society,1987,70(05):367. |
| [10] | Cullity B D.Eleemnts of X-ray Diffraction[M].Addison-Wesley.Reading MA,1978 |
| [11] | 路新瀛;梁开明;顾守仁 等.氧空位对氧化锆相结构稳定性及相变过程的影响[J].硅酸盐学报,1996,24(06):670. |
| [12] | Bogicevic A.;Crosbie GM.;Stechel EB.;Wolverton C. .Defect ordering in aliovalently doped cubic zirconia from first principles - art. no. 014106[J].Physical Review.B.Condensed Matter,2001(1):014106-1-014106-14. |
| [13] | Boulc'h F.;Dessemond L.;Djurado E. .Dopant size effect on structural and transport properties of nanometric and single-phased TZP[J].Solid state ionics,2002(Pt.B):143-150. |
| [14] | Frisch M J;Trucks G W;Schlegel H B et al.[CP].GaussianInc Pittsburgh PA |
| [15] | Lee C;Yang W;Parr R G .Development of the Colle-salvetti Correlation-energy Formula into a Functional of the Electron Density[J].Physical Review B,1988,37:785. |
| [16] | Wadt W R;Hay P J .Ab initio Effective Core Potentials for Molecular Calculations:Potentials for Main Group Elements Sodium to Bismuth[J].Journal of Chemical Physics,1985,82:284. |
| [17] | Hariharan P C;Pople J A .Influence of Polarization Functions on MO Hydrogenation Energies[J].THEORETICA CHIMICA ACTA,1973,28:213. |
| [18] | 王大宁;郭永权;梁开明;陶琨 .应用Rietveld 方法研究氧化锆的晶体结构[J].中国科学A辑,1998,28(09):823-829. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%