耐火材料 ›› 2026, Vol. 60 ›› Issue (3): 216-220.DOI: 10.3969/j.issn.1001-1935.2026.03.006

• 研究开发 • 上一篇    下一篇

LaAlO3材料的抗LiF侵蚀性能研究

张成成1), 樊文军1,2,3), 吴琦1), 辛文彬1,2,3), 邓永春1,2,3), 刘中兴1,2,3), 赵二雄4)   

  1. 1)内蒙古科技大学 稀土产业学院(稀土工程技术学院)内蒙古包头 014010;
    2)轻稀土资源绿色提取与高效利用教育部重点实验室 内蒙古包头 014010;
    3)内蒙古自治区工程研究中心 内蒙古包头 014010;
    4)包头稀土研究院 内蒙古包头 014030
  • 收稿日期:2025-07-23 出版日期:2026-06-15 发布日期:2026-06-23
  • 通讯作者: 樊文军,男,1976年生,硕士,副教授。E-mail:fanwenjun04@sohu.com
  • 作者简介:张成成:男,1999年生,硕士研究生。E-mail:1923025656@qq.com
  • 基金资助:
    自治区直属高校基本科研业务费项目(2024XKJX011);2025年度第二批自治区自然科学基金资助项目(重点联合基金项目)(2025ZDLH011);内蒙古科技厅重点研发和成果转化项目(2025YFHH0018);一流学科科研专项-重点项目(YLXKZX-NKD-002)。

Study on the Anti LiF Corrosion Performance of LaAlO3 Material

Zhang Chengcheng, Fan Wenjun, Wu Qi, Xin Wenbin, Deng Yongchun, Liu Zhongxing, Zhao Erxiong   

  1. First author’s address:Rare Earth Industry College, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
  • Received:2025-07-23 Online:2026-06-15 Published:2026-06-23

摘要: 为寻找能有效抵抗稀土氟化物熔盐电解体系中LiF电解质侵蚀的材料,首先将物质的量比为1∶1的高纯La2O3和Al2O3粉在空气气氛下于1 150 ℃保温4 h进行二次焙烧,合成了高纯单相LaAlO3粉体;随后向该粉体中加入黏结剂聚乙烯醇溶液,经1 600 ℃保温4 h热处理制得LaAlO3坩埚试样;最后将LiF粉体装入LaAlO3坩埚试样中,在950 ℃下保温2 h进行抗侵蚀试验,研究了LaAlO3材料对熔融LiF的抗侵蚀性能。结果表明:LaAlO3坩埚试样的侵蚀深度仅约30 μm,基体结构未被破坏,且LaAlO3材料也未向熔融LiF内部发生显著扩散;熔融LiF与坩埚试样的界面反应产物中,LaAlO3和LiF仍是主要物相。因此,LaAlO3材料对熔融LiF电解质表现出显著的抗侵蚀性能,具备作为稀土氟化物熔盐电解用坩埚材料的应用潜力。

关键词: LaAlO3, 抗侵蚀性能, 界面反应, LiF电解质

Abstract: In order to find materials that can effectively resist the erosion of LiF electrolyte in rare earth fluoride molten salt electrolysis system,high-purity La2O3 and Al2O3 powders with a mass ratio of 1∶1 were first subjected to secondary calcination at 1150 ℃ for 4 hours in an air atmosphere to synthesize high-purity single-phase LaAlO3 powder;Subsequently,a binder polyvinyl alcohol solution was added to the powder,and a LaAlO3 crucible sample was prepared by heat treatment at 1600 ℃ for 4 hours;Load LiF powder into LaAlO3 crucible samples and conduct corrosion resistance tests at 950 ℃ for 2 hours.The corrosion resistance of LaAlO3 material to molten LiF was studied.The results showed that the erosion depth of the LaAlO3 crucible sample was only about 30 μ m,the matrix structure was not damaged,and the LaAlO3 material did not significantly diffuse into the molten LiF; LaAlO3 and LiF are still the main phases in the interface reaction products between molten LiF and crucible samples.Therefore,LaAlO3 material exhibits significant corrosion resistance to molten LiF electrolyte and has the potential to be used as a crucible material for rare earth fluoride molten salt electrolysis.

Key words: LaAlO3, Anti erosion performance, Interface response, LiF electrolyte

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