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.

所属栏目

收稿日期

2007/7/122007/12/10

作者单位

秦大可:苏州大学材料工程学院, 江苏 苏州 215021
陈洪龄:南京工业大学化学化工学院, 江苏 南京 210009

备注

秦大可(1981-),男,江苏张家港人,助理实验师,硕士.

引用该论文:

QIN Da-ke,CHEN Hong-ling.Influence Factors on Formation of Zirconia under Hydrothermal Conditions[J].Materials for mechancial engineering,2008,32(6):53～56
秦大可,陈洪龄.水热合成工艺参数对制备ZrO₂的影响[J].机械工程材料,2008,32(6):53～56

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(4):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].Ceramic Transactions,1990,12:25-32.

【7】

Cheng Hu-min,Wu Li-jun.The effects of pH and alkaline earth Ions on the formation of nanosized zirconia phases under hydrothermal conditions[J].Journal of the American Ceramic Society,1999,19:1675-1681.

【8】

Dell′Agli,Ferone G.Crystallization of monoclinic zirconia from metastable phases[J].Solid State Ionics,2000,127(3/4):223-230.