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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

低温法制取Y2O3透明陶瓷的研究

王介强1; 郑少华1; 岳云龙1; 陶珍东2; 孙旭东3   

  1. 1. 济南大学材料学院, 济南 250022; 2. 山东大学材料学院, 济南 250014; 3. 东北大学材料与冶金学院, 沈阳 110006
  • 收稿日期:2002-10-24 修回日期:2002-12-16 出版日期:2003-11-20 网络出版日期:2003-11-20

Fabricating Transparent Yttria Ceramics at Low Temperature

WANG Jie-Qiang1; ZHENG Shao-Hua1; YUE Yun-Long1; TAO Zhen-Dong2; SUN Xu-Dong3   

  1. 1.Material School of Jinan University; Jinan 250022; China; 2.Material School of Shandong University; Jinan 250014, China; 3.Material and Metallurgy School of Northeastern University; Shenyang 110006; China
  • Received:2002-10-24 Revised:2002-12-16 Published:2003-11-20 Online:2003-11-20

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摘要： 发展了一种制备高烧结性Y2O3粉的新途径,并以此为原料,在相对低温下采用普通烧结的办法制备出透明Y2O3陶瓷.以硝酸钇为母盐,氨水为沉淀剂,通过控制反应体系中硫酸根离子的含量,生成树枝状的前驱物晶粒,其轴径比为6,经过1100℃煅烧分解,获得一次颗粒为60um,颗粒呈球形,低团聚高纯度的Y2O3粉体.该粉体经过模压成型,不加添加剂,于1700℃真空烧结,得到显微组织均匀的透明Y2O3多晶体,其在近红外区的透光率达70％.

关键词: 低温, Y2O3, 透明陶瓷, 硫酸根离子

Abstract: A new method for obtaining highly sinterable Y2O3 powders was developed. Those powders were used to prepare transparent bodies with
conventional sintering at relatively low temperature. Yttrium nitrate was used as a mother salt, and ammonia as a precipitant reagent, the fine
and dendritic precursor crystal was prepared by controlling the content of sulfate ions in the reaction system. The highly pure and low-agglomerated
Y2O3 powders were obtained by calcinating the precursor at 1100℃, the primary particles were spherical and about 60nm
in diameter. The powder compact pressed in steel die could be sintered to transparency without additives under vacuum at 1700℃. The sintered
transparent Y2O3 polycrystalline exhibited a homogeneous microstructure and its transmittance was up to 70% in the near infrared wavelength region.

Key words: low temperature, yttria, transparent ceramics, sulfate ion

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