金属醇盐的合成及其应用研究——乙醇锆的合成及其在氧化锆、锆钛酸铅微粉溶胶—凝胶法制备中的应用

SYTHESIS AND APPLICATION OF METAL ALKOXIDE-SYMTHESIS OF ZIRCONIUM ETHOXIDE AND PREPARATION OF ZrO_2,PB(Zr,Ti)O_3ULTRAFINE POWDERS BY SOL-GEL METHOD

用改进了的方法合成乙醇锆,能降低对原料的苛刻要求,产品纯度高(99.4％)。以合成的乙醇锆为原料,用溶胶—凝胶(Sol—Gel)法制备Z_rO_2和PZT微粉。所得Z_rO_2微粉纯度高、颗粒小、均匀性好,且表面活性高。所得PZT微粉纯度高、颗粒小、混合均匀(分子级)且合成温度低。用合成的乙醇锆成功制备了铁电PbZr_(0.51)Ti_(0.49)O_3材料(ρ=7.63g/cm^3,ε二888,tgδ(％)=0.1,d_(33)=197×10^(-12)C/N)。

Zirconium ethoxide was synthesized by improving method , this method reduced the stern requests to the raw meterial. The purity of product was high (99. 4%), Using synthesized,zirconoum ethoxide,we prepared ZrO2and Pb(Zr ,Ti)O3 ultrafine powders by Sol-Gel method., ZrO2 ultrafine powder processed some important advantages such as high homogeneity, high purity , fine partical size, high surface activity. Pb (Zr, Ti) O3 ultrafine powder processed not only as narrated above but also homogeneous mixture (molecular level)and low preparing temperature. Using synthesized zirconium ethoxide,we also successfully prepared ferroelectric material PbZr0.51Ti0.49O3(p=7. 63g/cm3,ε = 88g, tgδ(%)= 0.1,d33=197×10-12C/N).