欢迎访问《硅酸盐通报》官方网站,今天是

硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (6): 2122-2128.DOI: 10.16552/j.cnki.issn1001-1625.2025.1188

• 陶瓷 • 上一篇    下一篇

双金属醇盐法制备高纯超细镁铝尖晶石粉体

王颖1,2(), 雷牧云1, 凌昊1,2, 王海丽1,2, 李祯1, 黄存新2,3   

  1. 1.中材人工晶体研究院有限公司,北京 100018
    2.北京中材人工晶体研究院有限公司,北京 100018
    3.中材高新材料股份有限公司,北京 100102
  • 收稿日期:2025-12-01 修订日期:2025-12-11 出版日期:2026-06-15 发布日期:2026-07-14
  • 作者简介:王颖(1989—),女,博士,正高级工程师。主要从事透明陶瓷等光电信息功能材料的研究。E-mail:xwxng2016@163.com
  • 基金资助:
    国家重点研发计划(2022YFB3705900)

Preparation of High-Purity Ultrafine Mg-Al Spinel Powder by Double Metal Alkoxide Method

WANG Ying1,2(), LEI Muyun1, LING Hao1,2, WANG Haili1,2, LI Zhen1, HUANG Cunxin2,3   

  1. 1.Sinoma Synthetic Crystals Co.,Ltd.,Beijing 100018,China
    2.Beijing Sinoma Synthetic Crystals Co.,Ltd.,Beijing 100018,China
    3.Sinoma Advanced Materials Co.,Ltd.,Beijing 100102,China
  • Received:2025-12-01 Revised:2025-12-11 Published:2026-06-15 Online:2026-07-14

摘要:

本文创新性地采用双金属醇盐法结合行星球磨技术,成功制备出平均粒径D50为0.42 μm、低硬团聚且纯度大于99.99%(质量分数)的高纯镁铝尖晶石(MgAl2O4)粉体。通过优化醇盐水解条件与球磨机械参数,实现尖晶石相粉体低温合成与纳米级分散,显著降低能耗。所得粉体经60 MPa下1 550 ℃真空热压烧结4.0 h结合热等静压(1 750 ℃,200 MPa下烧结2.0 h)后处理,成功制备出直线透过率高达83.5%@600 nm(接近理论透过率86%)的高光学质量MgAl2O4透明陶瓷。本研究证实双金属醇盐法在制备满足透明陶瓷严苛要求的超细粉体方面具有显著优势,为高性能尖晶石光学材料的开发提供了重要的粉体基础。

关键词: 镁铝尖晶石, 透明陶瓷, 高纯粉体, 双金属醇盐法, 行星球磨, 透过率

Abstract:

High-purity Mg-Al spinel (MgAl2O4) powder with an average grain size D50 of 0.42 μm, low hard agglomeration, and purity higher than 99.99% (mass fraction) was successfully prepared by double metal alkoxide method combined with planetary ball milling technology. By optimizing the alkoxide hydrolysis conditions and ball milling mechanical parameters, the spinel phase powder was synthesized at low temperature and dispersed at the nanoscale, significantly reducing energy consumption. The obtained powder was sintered at 1 550 ℃ under vacuum for 4.0 h at 60 MPa combined with hot isostatic pressing (1 750 ℃, 200 MPa for 2.0 h) post-treatment. High optical quality MgAl2O4 transparent ceramics with linear transmittance of up to 83.5%@600 nm (close to the theoretical value of 86%) were successfully prepared. This study confirms that the double metal alkoxide method has significant advantages in preparing ultrafine powder that meet the stringent requirements of transparent ceramics, providing an important powder foundation for the development of high-performance spinel optical materials.

Key words: magnesium-aluminum spinel, transparent ceramics, high-purity powder, double metal alkoxide method, planetary ball milling, transmittance

中图分类号: