金属-EDTA螯合物法制备Pb(Zr,Ti)O_3超细粉的研究  

PREPARATION OF SUPERFINE POWDER Pb(Zr.Ti)O_3 BY METAL-EDTA COMPLEXES METHOD

作　　者：方佑龄[1] 赵文宽[2] 张蕾 康俊明[1] 袁良杰[1] 黄玲[1] 

机构地区：[1]武汉大学红外材料研究室,武汉430072 [2]武汉大学化学系

出　　处：《武汉大学学报（自然科学版）》1996年第1期119-123,共5页Journal of Wuhan University(Natural Science Edition)

基　　金：国家自然科学基金

摘　　要：以硝酸盐和EDTA(乙二胺四乙酸)为原料,用金属-EDTA螯合物热分解法制备均匀性好的Pb(Zr,Ti)O_3超细粉,经FT-IR光谱,热分析,X射线衍射分析和透射电镜等方法研究表明:硝酸根离子可加速金属-EDTA螯合物的热分解,仅在250C时便有Pb(Zr,Ti)O_3相生成,除PbO外不生成其它中间相,随着温度进一步升高,中间相PbO逐渐消失,经700C1h煅烧所得到的单一Pb(Zr,Ti)O_3相超细粉,平均粒径为34nm。Using nitrates and EDTA as raw materials, high homogeneous, superfine powders of PZT have been prepared by thermal decomposition of metal-EDTA complexes. The results of FT-IR spectra,DTA-TG,XRD and TEM show that nitrate ions accelerate the decomposition of the gel precursors (metal-EDTA complexes). The main products are PZT powders in which there is no other interphases besides PbO phase at 250 C. The superfine powders of monophase PZT have been produced after calcination at 700 C and the average size is about 34nm.

关 键 词：锆钛酸铅 金属 EDTA 螯合物 超细粉 压电陶瓷 

分 类 号：TQ174.756[化学工程—陶瓷工业] TM282[化学工程—硅酸盐工业]