溶胶-凝胶法制备高锆含量PLZST反铁电陶瓷粉体

发布时间：2018-07-04 09:38

本文选题：溶胶-凝胶 + PLZST粉体　；参考：《功能材料》2017年07期

【摘要】：以三水合乙酸铅(Pb(CH_3COO)_2·3H_2O)、乙酸镧(La(CH_3COO)_3)、乙酸锡(Sn(CH_3COO)_4)、乙酸锆(Zr(CH_3COO)_4)、钛酸丁酯(C_(16)H_(36)O_4Ti)为原料,采用改进的溶胶-凝胶(sol-gel)工艺制备(Pb_(0.97)La_(0.02))(Zr_(0.95)Sn_(0.01)Ti_(0.04))O_3(简称PLZST)反铁电陶瓷粉。采用DSC-TGA差热分析研究PLZST干凝胶的分解性能,用XRD和SEM对不同温度煅烧的PLZST陶瓷粉进行表征,分析煅烧温度对产物的影响。实验结果表明,PLZST干凝胶在550℃以上达到完全分解;干凝胶粉体在850℃煅烧2h,可生成较纯钙钛矿相的高锆含量PLZST陶瓷粉体,粉体颗粒呈球形,平均晶粒约为200nm。
[Abstract]:With three hydration of lead acetate (Pb (CH_3COO) _2. 3H_2O), lanthanum acetate (La (CH_3COO) _3), tin acetate (Sn (CH_3COO) _4), zirconium acetate (Zr (CH_3COO)), and butyl titanate (36) as raw material, the modified sol gel process (0.97) (0.95) (0.01) (0.04) was used as the antiferroelectric ceramic powder. The decomposition performance of PLZST dry gel was studied by DSC-TGA differential thermal analysis. The PLZST ceramic powder calcined at different temperatures was characterized by XRD and SEM, and the effect of calcining temperature on the product was analyzed. The experimental results showed that the PLZST dry gel was completely decomposed at 550 degrees C, and the dry gel powder calcined at 850 C 2H, which could produce a higher zirconium content PL than the pure perovskite phase. The ZST ceramic powders are spherical and the average grain size is about 200nm..
【作者单位】：湘潭大学材料科学与工程学院;西北核技术研究所;
【分类号】：TM221

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