以硝酸锆为原料,在不同水热条件下制备了多种ZrO2粉体;主要考察水热体系填充度、水热前驱物的浓度、pH值等工艺参数对水热结晶过程中生成ZrO2的影响;用XRD、TEM等对所制备粉体进行了表征.结果表明:体系填充度对其中m-ZrO2比例(Xm)、晶粒尺寸没有显著影响;水热前驱物浓度增加,产物中Xm没有变化,晶粒长大不明显;而水热前驱物pH值对产物中Xm、产物晶粒尺寸、形貌及团聚情况有很大影响.
参考文献
| [1] | Kuznetsov V A;Sidorenko O V .Crystallization of zirconium dioxide and hafnium dioxide under hydrothermal conditions[J].Kristallografiya,1968,13(04):748-749. |
| [2] | Mitsuhashi T;Ichihara M .Characterization and stabilization of metastable tetragonal ZrO2[J].Journal of the American Ceramic Society,1974,57:97-101. |
| [3] | Tani;Eiji;Yoshimura et al.Hydrothermal preparation of ultrafine monoclinic zirconia powder[J].Journal of the American Ceramic Society,1981,64:175-181. |
| [4] | Tani;Eiji;Yoshimura et al.Formation of ultrafine tetragonal ZrO2 powder under hydrothermal conditions[J].Journal of the American Ceramic Society,1983,66:11-14. |
| [5] | Nishizawa H;Yamasaki N .Crystallization and transformation of zirconia under hydrothermal conditions[J].Journal of the American Ceramic Society,1982,65:343-346. |
| [6] | Adair J H;Denkewicz R P .Formation of monoclinic and tetragonal zirconia as a function of solution pH[J].British Ceramic Transactions,1990,12:25-32. |
| [7] | W.Li-jun and Q.Li-min .The effects of pH and alkaline earth ions on the formation of nanosized zirconia phases under hydrothermal conditions[J].Journal of the European Ceramic Society,1999(8):1675-1681. |
| [8] | Dell'Agli G.;Mascolo G.;Pansini M.;Ferone C. .Crystallization of monoclinic zirconia from metastable phases[J].Solid state ionics,2000(3/4):223-230. |
| [9] | G. DELL'AGLI;G. MASCOLO .Low temperature hydrothermal synthesis of ZrO_(2)-CaO solid solutions[J].Journal of Materials Science,2000(3):661-665. |
| [10] | Takayuki Tsukada;Sridhar Venigalla;Augusto A. Morrone;James H. Adair .Low-temperature hydrothermal synthesis of yttrium-doped zirconia powders[J].Journal of the American Ceramic Society,1999(5):1169-1174. |
| [11] | Stefanic G.;Music S.;Popovic S. .INFLUENCE OF PH ON THE HYDROTHERMAL CRYSTALLIZATION KINETICS AND CRYSTAL STRUCTURE OF ZRO2[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,1997(1):31-39. |
| [12] | HU JIANGTAO;ODOM TERI WANG;LIEBER CHARLES M. .Chemistry and Physcis in One Dimension: Synthesis and Properties of Nanowires and Nanotubes[J].Accounts of Chemical Research,1999(5):435-445. |
| [13] | 徐如人;庞文琴.无机合成与制备化学[M].北京:高等教育出版社,2001 |
| [14] | 陶为华,马桂林,周丽,陈蓉.ZrO2-8 mol%Y2O3纳米晶的碱性水热法合成及其烧结体的电性能研究[J].化学学报,2003(12):1955-1959. |
| [15] | 郑燕青,施尔畏,李汶军,陈之战,仲维卓,胡行方.水热反应条件二氧化锆同质变体的形成[J].中国科学E辑,2001(04):289-295. |
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