沉淀剂浓度对喷雾共沉淀法合成Tb2O3纳米粉体的影响

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (4): 1499-1505.

沉淀剂浓度对喷雾共沉淀法合成Tb₂O₃纳米粉体的影响

唐宇翔^1,2, 胥涛², 王耀智^1,2, 敬畏², 梅炳初¹

1.武汉理工大学材料科学与工程学院,武汉 430079;
2.中国工程物理研究院化工材料研究所,绵阳 621900

收稿日期:2023-11-20 修订日期:2024-01-21 出版日期:2024-04-15 发布日期:2024-04-17
通信作者: 胥涛,工程师。E-mail:kidxiaoji@163.com梅炳初,博士,教授。E-mail:bcmei@whut.edu.cn
作者简介:唐宇翔(1996—),男,硕士研究生。主要从事纳米粉体和透明陶瓷方面的研究。E-mail:317549@whut.edu.cn
基金资助:
四川省创新人才基金(2023JDRC0015)

Influence of Precipitant Concentration on Tb₂O₃ Nanopowders Synthesized via Spray Coprecipitation Method

TANG Yuxiang^1,2, XU Tao², WANG Yaozhi^1,2, JING Wei², MEI Bingchu¹

1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430079, China;
2. Institute of Chemical Materials, Chinese Academy of Engineering Physics, Mianyang 621900, China

Received:2023-11-20 Revised:2024-01-21 Online:2024-04-15 Published:2024-04-17

摘要/Abstract

摘要： 采用喷雾共沉淀法结合还原气氛处理制备了Tb₂O₃超细纳米粉体,探究了碳酸氢铵沉淀剂浓度对前驱体物相、粉体微观形貌和烧结性能的影响。研究表明,沉淀剂浓度会显著影响纳米粉体的微观形态、均匀性和烧结活性。沉淀剂浓度过低会导致沉淀物晶粒过度生长,造成粉体粒径增大和不均匀性;沉淀剂浓度过高会造成不良的软团聚。最佳沉淀剂浓度为1.5 mol/L,该条件下可获得平均粒径约为52.45 nm的超细Tb₂O₃均匀粉体,粒径分布范围为30~80 nm。粉体经1 400 ℃的保护气氛烧结和热等静压处理后制得的Tb₂O₃透明陶瓷在1 064 nm波长下Tb₂O₃透明陶瓷线性透过率为76.11%。

关键词: Tb₂O₃, 喷雾共沉淀, 沉淀剂浓度, 纳米粉体, 均匀性, 气氛烧结

Abstract: Ultrafine Tb₂O₃ nanopowders were prepared by spray co-precipitation method combined with reduction atmosphere treatment. The influence of ammonium bicarbonate precipitant concentration on precursor phase, nanopowders microstructure, and sintering performance was investigated. The results show that the concentration of the precipitant significantly affects the microstructure, uniformity and sintering activity of the nanopowder. A low concentration of precipitant can lead to excessive growth of precipitate grains, resulting in an increase in nanopowders size and unevenness, while a excessive concentration of precipitant can cause poor soft agglomeration. The optimal precipitant concentration is 1.5 mol/L, and under this condition, ultrafine Tb₂O₃ nanopowders with an average particle size of about 52.45 nm can be obtained, with a particle size distribution range of 30 nm to 80 nm. The Tb₂O₃ transparent ceramic prepared by sintering the powder in a protective atmosphere at 1 400 ℃ and hot isostatic pressing has a linear transmittance of 76.11% at 1 064 nm.

Key words: Tb₂O₃, spray coprecipitation, precipitant concentration, nanopowders, homogeneity, atmosphere sintering

中图分类号:

TQ174

唐宇翔, 胥涛, 王耀智, 敬畏, 梅炳初. 沉淀剂浓度对喷雾共沉淀法合成Tb₂O₃纳米粉体的影响[J]. 硅酸盐通报, 2024, 43(4): 1499-1505.

TANG Yuxiang, XU Tao, WANG Yaozhi, JING Wei, MEI Bingchu. Influence of Precipitant Concentration on Tb₂O₃ Nanopowders Synthesized via Spray Coprecipitation Method[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(4): 1499-1505.

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沉淀剂浓度对喷雾共沉淀法合成Tb₂O₃纳米粉体的影响

Influence of Precipitant Concentration on Tb₂O₃ Nanopowders Synthesized via Spray Coprecipitation Method

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