无机材料学报 ›› 2015, Vol. 30 ›› Issue (5): 487-492.DOI: 10.15541/jim20140533 CSTR: 32189.14.10.15541/jim20140533

• 研究论文 • 上一篇    下一篇

单分散球形YAG透明陶瓷粉体的喷雾造粒制备及其性能表征

张 乐1,2, 周天元1,2, 杨 浩1,2, 乔学斌1,2, 王忠英2,3, 章 健1,2, 唐定远1,2   

  1. (1. 江苏师范大学 物理与电子工程学院, 徐州 221116; 2. 江苏师范大学 江苏省先进激光材料与器件重点实验室,  徐州 221116; 3. 南京工业大学 材料科学与工程学院, 南京 210009)
  • 收稿日期:2014-10-20 修回日期:2014-11-24 出版日期:2015-05-20 网络出版日期:2015-04-28
  • 基金资助:

    国家自然科学基金(51402133, 51302115, 61405081); 江苏高校优势学科建设工程资助项目(PAPD)

Preparation and Characterization of Monodispersed and Spherical YAG Powder for Transparent Ceramic by Spray Drying

ZHANG Le1,2, ZHOU Tian-Yuan1,2, YANG Hao1,2, QIAO Xue-Bin1,2, WANG Zhong-Ying2,3, ZHANG Jian1,2, TANG Ding-Yuan1,2   

  1. (1. School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China; 2. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou 221116, China; 3. College of Materials Science and Engineering, Nanjing Technological University, Nanjing 210009, China)
  • Received:2014-10-20 Revised:2014-11-24 Published:2015-05-20 Online:2015-04-28
  • Supported by:

    National Natural Science Foundation of China(51402133, 51302115, 61405081); Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)

摘要:

采用无水乙醇基浆料结合喷雾造粒工艺制备YAG透明陶瓷粉体, 通过扫描电子显微镜、压汞仪、能谱仪及紫外–可见–红外透过光谱系统研究了不同PVB粘结剂添加量下YAG造粒颗粒的形貌、尺寸、成型性能及其破碎行为, 对成型素坯的孔分布及烧制透明陶瓷的显微结构及光学性能进行了详细表征。在优化PVB添加量为1.0wt%时, 造粒粉体为实心单分散颗粒, 球形度高、化学均匀性好, 其平均粒径约为40 μm, 成型性能优异; 在75 MPa压力下, 造粒颗粒完全破碎形成密实均一的坯体结构。烧结后的YAG透明陶瓷显微结构均一, 无气孔及其他缺陷, 光学质量优异。

关键词: 透明陶瓷, YAG, 喷雾造粒, 粘结剂

Abstract:

YAG transparent ceramic powders were prepared by spray drying method with anhydrous ethanol suspension. The morphology, size, forming performance and crushing behavior of granulated particles with different PVB binder contents, the pore distribution in green compacts as well as the microstructure and optical properties of sintered ceramics were investigated by SEM, mercury injection, EDS and UV-Visible-Infrared transmission spectroscopy. The optimal content of PVB is 1.0wt%. The granulated particles exhibit excellent forming performance with mono-dispersed and fully dense aggregates. They have high spherical degree and high chemical uniformity. Their mean size is ~40 μm. The granulated particels are completely crushed under 75 MPa pressure and form uniform and compact structure of green compacts. The sintered YAG transparent ceramics have good optical properties with homogeneous microstructure and without pore and defects.

Key words: transparent ceramics, YAG, spray drying, binder

中图分类号: