摘 要：采用共沉淀法制备了磷酸锆锌（α-ZnZr₄(PO₄)）粉体，探讨了磷 酸锆锌粉体合成机理，研究了煅烧温度、保温时间等煅烧条件对粉体 合成的影响，并用 TG-DTA、FT-IR、XRD、TEM 等方法进行表征。 实 验表明前驱体在 900～950 ℃煅烧 2 h 可以获得平均粒径 200 nm、结 晶完全的 α-ZnZr₄(PO₄)₆ 粉体，采用此粉体制备的陶瓷材料 1 200 ℃时 热膨胀系数为-2.0×10^-6 ℃^-1。 

关键词：共沉淀法；煅烧温度；热膨胀

Abstract: The α-ZnZr₄ （PO₄）₆ powder was synthesized by coprecipitate method. The mechanism of synthesizing， effect of the calcination tem perature and holding time to the powders synthesized were discussed. The precursor and the powder product were characterized by TG-DTA， FT IR， XRD， TEM etc. The results showed that the perfect crystallization powder of average grain size 200 nm were prepared at 900～950 ℃ for 2 hours. The ceramics had a lower thermal expansion coefficient of-2.0× 10^-6 ℃^-1 at 1 200℃. 

Keywords: coprecipitate method; calcination temperature; thermal ex pansion