PZT及PLZT粉料研製

Preparation of PZT and PLZT Powders

洪鷺華(Lu-Hwa Hong) ； 黃經綸(Ching-Lun Huang) ； 何英礎(Ying-Chu Hoh)

《鑛冶：中國鑛冶工程學會會刊》 34卷3期 (1990/09) Pp. 51-61

https://doi.org/10.30069/MM.199009_34(3).0004

摘要

本實驗研製PZT及PLZT粉料的方法採用可以量產的共沉法，所用原料醋酸鑭（lanthanum acetate）、草酸鋯銨（ammonium zirconyl oxalate）、草酸鈦銨（ammonium titanyl oxalate）三種由市面買不到並以再結晶的方法純化經化學分析、SEM、IR、X-ray光譜鑑定其性質。草酸鹽先導物是以醋酸鉛（或同時含醋酸鑭）的溶液加入草酸鋯銨及草酸鋯銨的混合液中共沉而成，此共沉物經SEM及X-Ray光譜鑑定其晶相並非一般共沉的非晶質（amorphous），此共沉物可任意粉碎，且無一般共沉法及水解法的凝聚現象（agglomeration）。經600°C〜900°C煆燒除去有機物，可得到純度高、顆粒均勻、不易凝聚的PZT及PLZT粉末，經SEM、IR、X-Ray、DTA、TGA鑑定確定其為perovskite結構，由SEM照片看大部份粉粒小於1μ，化學分析測定粉體化學組成符合PZT及PLZT粉體的進料原子比率且氯離子及碳的含量已可降至10 ppm以下。

並列摘要

PZT and PLZT oxalate powder precursors were prepared by addition of lead acetate, and/or lanthanum acetate solution to an aqueous solution of ammonium titanyl oxalate and ammonium zirconyl oxalate. These raw material were home-made and purified by recry-stallization to minimize the chloride content. The resulting oxalate precursor had a fine particle size with crystalline structure, and was not agglomerated through filtration and drying. After calcination at 600°C~900°C in air, the size of the obtained ceramic powder was almost less than 1 μ and the crystal structure was perovskite. The results of coprecipitation and calcination treatment, X-ray diffraction, SEM, DTA/TGA, IR, are discussed. The analysis results indicate that chloride and carbon contents are less than 10 ppm in PZT and PLZT powders.