耐火材料 ›› 2024, Vol. 58 ›› Issue (5): 410-413.DOI: 10.3969/j.issn.1001-1935.2024.05.008

• 研究开发 • 上一篇    下一篇

稀土氧化物对低温固相合成镁铝尖晶石纤维的影响

郭江鹏, 邓长宇, 王昕悦, 陈昕煜, 段红娟, 张海军   

  1. 武汉科技大学 省部共建耐火材料与冶金国家重点实验室 湖北武汉 430081
  • 收稿日期:2024-03-15 出版日期:2024-10-15 发布日期:2024-10-16
  • 作者简介:郭江鹏:男,2001年生,本科。E-mail:2583916145@qq.com
  • 基金资助:
    国家自然科学基金面上项目(52072274,52272021);国家自然科学基金重点项目(52232002);湖北三峡实验室开放/创新基金(SK232006);湖北省自然科学基金项目(2022CFB629)。

Effects of rare earth oxides on low temperature solid phase synthesis of MgAl2O4 fibers

Guo Jiangpeng, Deng Changyu, Wang Xinyue, Chen Xinyu, Duan Hongjuan, Zhang Haijun   

  1. The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China
  • Received:2024-03-15 Online:2024-10-15 Published:2024-10-16

摘要: 为探究稀土氧化物和合成温度对合成镁铝尖晶石纤维的影响,以碱式硫酸镁晶须、铝溶胶为主要原料,分别以Y2O3、La2O3、Nd2O3为添加剂,经不同温度热处理后,制备了镁铝尖晶石纤维,研究了添加剂的种类(Y2O3、La2O3、Nd2O3)、加入量(加入质量分数分别为0、1%、2%和3%)以及不同热处理温度(800、1 000和 1 200 ℃保温3 h)对低温固相合成镁铝尖晶石纤维的影响。结果表明:1)以碱式硫酸镁晶须、铝溶胶为原料,添加质量分数为3%(w)的Nd2O3或Y2O3在800 ℃热处理时均对镁铝尖晶石纤维的合成具有较为明显的促进作用。2)热处理温度为1 000 ℃时,添加3%(w)Nd2O3合成镁铝尖晶石纤维的效果最好。

关键词: 镁铝尖晶石纤维, 稀土氧化物, 添加剂, 低温合成

Abstract: To investigate the effects of rare earth oxides and heat treatment temperatures on their synthesis,MgAl2O4 fibers were prepared using basic magnesium sulfate whiskers and alumina sol as raw materials,and Y2O3,La2O3 and Nd2O3 as additives,heat treating at different temperatures.The effects of additive types (Y2O3,La2O3 and Nd2O3),additive additions (0,1%,2% and 3%,by mass) and heat treatment temperatures (800,1 000 and 1 200 ℃ for 3 h) on the low temperature solid phase synthesis of MgAl2O4 fibers were studied.The results show that:(1)with basic magnesium sulfate whiskers and alumina sol as raw materials and heat treatment temperature of 800 ℃,adding 3% Nd2O3 or Y2O3 can significantly promote the synthesis of MgAl2O4 fibers;(2)when the heat treatment temperature is 1 000 ℃,adding 3% Nd2O3 has the best effect on the synthesis of MgAl2O4 fibers.

Key words: MgAl2O4 fibers, rare earth oxides, additives, low temperature synthesis

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