Pechini法制备Y_(2)O_(3)的煅烧温度对无压烧结AlON陶瓷透光性的影响  

Effects of Calcining Temperature in the Preparation of Y_(2)O_(3)by Pechini Method on the Transparency of Pressureless Sintered AlON Ceramics

作　　者：郭浩然[1] 闫晖 单英春[1] 高铭泽 徐久军[1] 李江涛[2] GUO Haoran;YAN Hui;SHAN Yingchun;GAO Mingze;XU Jiujun;LI Jiangtao(Department of Materials Science and Engineering,Dalian Maritime University,Dalian 116026,China;Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100080,China)

机构地区：[1]大连海事大学材料系,大连116026 [2]中国科学院理化技术研究所,北京100080

出　　处：《人工晶体学报》2024年第11期2004-2012,共9页Journal of Synthetic Crystals

基　　金：国家自然科学基金(52372058);大连市重点学科重大课题(2021JJ11CG002)。

摘　　要：首先以Y(NO _(3))_(3)·6H _(2) O为Y源,采用Pechini法制备前驱体,然后通过煅烧制得纳米Y_(2)O_(3)粉体,再将其作为烧结助剂,在1880℃保温2.5 h无压烧结制备AlON透明陶瓷,研究前驱体煅烧温度对产物组成、形貌、粒度,以及所制备AlON陶瓷透光性的影响规律。结果表明,提高前驱体煅烧温度会促进有机物分解,但也会造成Y_(2)O_(3)颗粒长大,有机物残留和过大粒度的Y_(2)O_(3)粉体都不利于获得高致密度的高透光性AlON陶瓷。900℃煅烧2 h所得纳米Y_(2)O_(3)粉体适合作为快速无压烧结制备AlON透明陶瓷的烧结助剂,所制备的AlON陶瓷在波长~3750 nm的透过率达83.4%。Using Y(NO _(3))_(3)·6H _(2) O as yttrium source,nano-sized Y_(2)O_(3)powder was obtained by calcining the precursor prepared by Pechini method.This Y_(2)O_(3)powder was then used as a sintering additive to fabricate transparent AlON ceramics via pressureless sintering at 1880℃for 2.5 h.The effects of precursor calcination temperature on the composition,morphology and particle size of Y_(2)O_(3)powder,as well as on the transparency of AlON ceramics were thoroughly studied.The results indicate that increasing calcination temperature of the precursor can promote the decomposition of organic compounds,but it also leads to the growth of Y_(2)O_(3)particles.Residual organic compounds and excessive growth of Y_(2)O_(3)powders are unfavorable for fabrication of AlON ceramics with high transmittance and high relative density.The nano-sized Y_(2)O_(3)powder prepared by calcining the precursor at 900℃for 2 h is favorable for the fabrication of highly transparent AlON ceramics via rapid pressureless sintering.The infrared transmittance of the obtained AlON ceramics reaches up to 83.4%at~3750 nm.

关 键 词：Y_(2)O_(3) Pechini法 ALON 透明陶瓷 烧结助剂 无压烧结 

分 类 号：TQ174.1[化学工程—陶瓷工业]