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无机材料学报

无机材料学报

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高透光率Nd:YAG透明陶瓷的制备与性能研究

刘文斌1, 寇华敏1, 潘裕柏1, 唐木智明2, 李 江1, 郭景坤1   

  1. 1. 中国科学院上海硅酸盐研究所, 上海 200050; 2. 日本富山县立大学, 日本富山 939-0398
  • 收稿日期:2007-11-29 修回日期:2008-03-28 出版日期:2008-09-20 网络出版日期:2008-09-20

Preparation and Characteristic of Properties of High Transmission Nd:YAG Transparent Ceramic

LIU Wen-Bin1, KOU Hua-Min1, PAN Yu-Bai1, KARAKI Tomoaki2, LI Jiang1, GUO Jing-Kun1   

  1. 1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. Toyama Prefectecral University, 939-0398 Toyama, Japan
  • Received:2007-11-29 Revised:2008-03-28 Published:2008-09-20 Online:2008-09-20

PDF (PC)

2036

被引次数

31

摘要： 以Y(NO3)3·6H2O、Al (NO3)3·9H2O、(NH4)2SO4和Nd(NO3)3为原料, NH4HCO3为沉淀剂, 以TEOS作为添加剂, 采用共沉淀法制备出Nd:YAG前驱体粉体; 前驱体经过1200℃煅烧5h后, 得到分散性好, 颗粒近似球型、纯YAG立方相的Nd:YAG纳米粉体, 其平均粒径约为100nm. 煅烧后的粉体压制成素坯, 在1700～1800℃煅烧10h, 可获得透光性良好的Nd:YAG激光透明陶瓷, YAG晶粒的平均尺寸为15μm, 晶界处和晶粒内没有杂质、气孔存在, 无散射中心. 1.5mm厚的样品在近红外波长为1064nm处透过率为83.5%, 基本接近于透明Nd:YAG晶体的理论值.

关键词: 共沉淀, 纳米粉体, 钕掺杂钇铝石榴石, 透明陶瓷

Abstract: Neodymium-doped yttrium aluminum garnet (Nd:YAG) precursor powders were fabricated by co-precipitation method, using Al(NO3)3·9H2O, Y(NO3)3·6H2O, (NH4)2SO4 and Nd(NO3)3 as raw materials, NH4HCO3 as precipitator, TEOS as sintering additive. After calcining the Nd:YAG precursor at 1200℃ for 5h, the well dispersive, spherical pure cubic YAG nano-powders with average particle size of about 100nm were obtained. Subsequently, calcined powders were molded by cold isostatic presses. Transparent ceramics of excellent transmission were obtained by sintering Nd:YAG green body at 1700-1800℃ for 10h in vacuum. The ceramic crystal grains with average size of about 15μm appear uniformity. There is no impurity and core in grain interface and inner-grain. No scattering center can be detected. The transmission of the sample with thickness of 1.5mm is 83.5% at the near infrared wavelength of 1064nm, which is very close to the theoretical value of Nd:YAG single crystal.

Key words: co-precipitation, nanopowder, Nd:YAG, transparent ceramic

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