铝矾土合成Al2O3-MgAl2O4复合材料的烧结性和力学性能研究

doi:10.11896/cldb.24080033

材料导报

2025, Vol. 39

Issue (15): 24080033-5 https://doi.org/10.11896/cldb.24080033

无机非金属及其复合材料

铝矾土合成Al₂O₃-MgAl₂O₄复合材料的烧结性和力学性能研究

王晓军¹, 玄松桐², 王燕锋¹, 苏廷龙³, 田玉明^4,*

1 吕梁学院物理与电子信息工程系,山西吕梁 033001
2 山西工程科技职业大学智能制造学院,山西晋中 030619
3 孝义市金刚耐火材料有限公司,山西吕梁 032200
4 山西科技学院材料科学与工程学院,山西晋城 048011

Study on the Sinterability and Mechanical Properties of Al₂O₃-MgAl₂O₄ Composites Synthesized from Bauxite

WANG Xiaojun¹, XUAN Songtong², WANG Yanfeng¹, SU Tinglong³, TIAN Yuming^4,*

1 Department of Physics and Electronic Information Engineering, Lyuliang University, Lvliang 033001, Shanxi, China
2 College of Intelligent Manufacturing, Shanxi Vocational University of Engineering and Technology, Jinzhong 030619, Shanxi, China
3 Xiaoyi King Kong Refractory Co., Ltd., Lvliang 032200, Shanxi, China
4 College of Materials Science and Engineering, Shanxi Institute of Science and Technology, Jincheng 048011, Shanxi, China

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摘要 Al₂O₃-MgAl₂O₄复合材料因具有优异的性能,可被应用在一些特殊的高温行业中,从而引起了人们的广泛关注。本工作选取铝矾土生料和氧化镁为原料,采用固相烧结工艺在1 350～1 450 ℃保温2 h后,获得了Al₂O₃-MgAl₂O₄复合陶瓷材料,研究了MgAl₂O₄的含量和烧结温度对其致密性和力学性能的影响。研究发现:经1 400 ℃烧结保温2 h后的样品的致密性和力学性能较好,烧结温度升高至1 450 ℃时,样品的致密性和力学性能降低。经1 400 ℃烧结得到的样品中,当MgAl₂O₄与Al₂O₃+MgAl₂O₄的质量比达到35∶100时,样品的性能最佳:显气孔率最小,为0.64%,抗折强度最大,为132.11 MPa。

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	王晓军
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	田玉明

关键词: 复合材料镁铝尖晶石离子扩散力学性能固溶体

Abstract: The Al₂O₃-MgAl₂O₄ composites are widely used in some special high-temperature industries due to their excellent properties, which arouses widespread attention. In this work, using bauxite and magnesia as raw materials, the Al₂O₃-MgAl₂O₄ composites was obtained by solid sintering process at 1 350—1 450 ℃ for 2 h, and then the effects of MgAl₂O₄ content and sintering temperature on its densification and mechanical properties were studied. The findings show that the sample has a good densification and mechanical property after sintering at 1 400 ℃ for 2 h, while the densification and mechanical property of the sample decrease when the sintering temperature increased to 1 450 ℃. With the mass ratio of MgAl₂O₄ to Al₂O₃+MgAl₂O₄ of 35∶100, the sample has the best performance, with a minimum apparent porosity of 0.64% and a flexural strength of 132.11 MPa.

Key words: composite MgAl₂O₄ ion diffusion mechanical property solid solution

出版日期: 2025-08-10 发布日期: 2025-08-13

ZTFLH:

TQ174

基金资助: 吕梁市高层次科技人才项目(2022RC14;2022RC12);山西省基础研究项目(202103021224318);山西省高等学校教学改革创新项目(J20231373)

通讯作者: 田玉明,工学博士,教授,博士研究生导师,山西科技学院副院长。前主要从事油气压裂支撑剂、利用固废制备耐火材料等先进陶瓷材料设计与制备的研究。tym1654@126.com

作者简介: 王晓军,博士,吕梁学院物理与电子信息工程系副教授,中北大学半导体与物理学院硕士研究生导师(校外)。目前主要从事先进陶瓷材料设计和机理研究。

引用本文:

王晓军, 玄松桐, 王燕锋, 苏廷龙, 田玉明. 铝矾土合成Al₂O₃-MgAl₂O₄复合材料的烧结性和力学性能研究[J]. 材料导报, 2025, 39(15): 24080033-5.
WANG Xiaojun, XUAN Songtong, WANG Yanfeng, SU Tinglong, TIAN Yuming. Study on the Sinterability and Mechanical Properties of Al₂O₃-MgAl₂O₄ Composites Synthesized from Bauxite. Materials Reports, 2025, 39(15): 24080033-5.

链接本文:

https://www.mater-rep.com/CN/10.11896/cldb.24080033 或 https://www.mater-rep.com/CN/Y2025/V39/I15/24080033

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