四价元素高熵铝硅酸盐陶瓷的制备与性能研究

doi:10.19964/j.issn.1006-4990.2025-0058

无机盐工业 ›› 2026, Vol. 58 ›› Issue (1): 43-51.doi: 10.19964/j.issn.1006-4990.2025-0058

四价元素高熵铝硅酸盐陶瓷的制备与性能研究

张俊¹(), 朱泓颖¹, 蒋海云¹(), 张维莉¹, 吴若梅¹, 胡伟达², 雷志勇³, 刘斌⁴

1.湖南工业大学包装与材料工程学院，湖南株洲 412000
2.湖南工业大学醴陵陶瓷学院，湖南株洲 412000
3.深圳冠为科技股份有限公司，广东深圳 518000
4.广东润恒科技有限公司，广东湛江 524000

收稿日期:2025-02-02 出版日期:2026-01-10 发布日期:2025-05-27
通讯作者: 蒋海云（1978— ），男，教授，硕士生导师，研究方向为无机材料；E-mail：jhyun@163.com。
作者简介:张俊（2000— ），男，硕士研究生，研究方向为高熵陶瓷；E-mail：18205528834@163.com。
基金资助:
湖南省大学生创新创业训练计划项目(S202411535001);湖南省重点研发计划项目(2022GK2037)

Study on preparation and properties of tetravalent element high⁃entropy aluminosilicate ceramics

ZHANG Jun¹(), ZHU Hongying¹, JIANG Haiyun¹(), ZHANG Weili¹, WU Ruomei¹, HU Weida², LEI Zhiyong³, LIU Bin⁴

1. School of Packaging and Materials Engineering，Hunan University of Technology，Zhuzhou 412000，China
2. Liling Ceramic College，Hunan University of Technology，Zhuzhou 412000，China
3. Shenzhen Glareway Technology Co. ，Ltd. ，Shenzhen 518000，China
4. Guangdong Runheng Technology Co. ，Ltd. ，Zhanjiang 524000，China

Received:2025-02-02 Published:2026-01-10 Online:2025-05-27

摘要/Abstract

摘要：

为有效改善铝硅酸盐陶瓷的热性能与力学性能，通过固相反应法引入四价元素，成功制备4种构型熵的铝硅酸盐陶瓷0.25（Y_1/2Yb_1/2）₄Al₂O₉·0.75（Y_1/2Yb_1/2）₂（xMe_1/_x ）₂O₇（x=1、2、3、4；Me=Si、Zr、Ti、Ce），并系统研究其物相组成、微观结构、热物理性能及力学性能。在热物理性能方面，随着构型熵的增加，陶瓷样品的热膨胀系数（CTE）逐渐升高，而导热系数显著降低。其中，最高构型熵样品的导热系数降至0.6 W/（m·℃），其热膨胀系数为5.27×10⁻⁶ ℃^-1。在力学性能方面，尽管陶瓷的高熵化使其弹性模量有所下降，但硬度和断裂韧性却得到显著提升，其中断裂韧性达到2.2 MPa·m^1/2，维氏硬度为8.5 GPa。微观结构表征结果表明，晶粒细化有效促进力学性能的提升。通过四价元素掺杂实现铝硅酸盐陶瓷构型熵的精确调控，揭示构型熵变化对材料微观结构演变及性能提升的作用机制，为调控铝硅酸盐陶瓷的热物理及力学性能提供一种新方法，展现出高熵化策略提升先进陶瓷材料结构与性能的潜在价值。

关键词: 高熵陶瓷, 铝硅酸盐, 热物理性能, 断裂韧性

Abstract:

The high⁃entropy strategy was explored by incorporating tetravalent elements through a solid⁃state reaction method to effectively enhance the thermophysical and mechanical properties of aluminosilicate ceramics.Four high⁃entropy aluminosilicate ceramics with different configurational entropies were successfully synthesized：0.25（Y_1/2Yb_1/2）₄Al₂O₉·0.75（Y_1/2Yb_1/2）₂（xMe_1/_x ）₂O₇（x=1，2，3，4；Me=Si，Zr，Ti，Ce）.These ceramics were systematically studied including phase composition，microstructure，thermophysical properties，and mechanical properties.The results indicated that the coefficient of thermal expansion（CTE） of the ceramic samples was gradually increased with the increase of configurational entropy.While the thermal conductivity was decreased significantly.Notably，the sample with the highest configurational entropy exhibited a thermal conductivity as low as 0.6 W/（m·℃），whereas its CTE reached 5.27×10⁻⁶ ℃^-1.In terms of mechanical properties，although the elastic modulus was decreased for the increase of entropy，both hardness and fracture toughness were markedly enhanced.Specifically，the fracture toughness achieved 2.2 MPa·m^1/2，and the Vickers hardness was measured at 8.5 GPa.Microstructural characterization revealed that grain refinement was effectively contributed to the improvement of mechanical properties.This study presented a novel approach for tailoring the thermophysical and mechanical properties of aluminosilicate ceramics and verified the significant potential of the high⁃entropy strategy in the domain of advanced ceramic materials.

Key words: high?entropy ceramics, aluminosilicate, thermophysical properties, fracture toughness

中图分类号:

TQ174.1

张俊, 朱泓颖, 蒋海云, 张维莉, 吴若梅, 胡伟达, 雷志勇, 刘斌. 四价元素高熵铝硅酸盐陶瓷的制备与性能研究[J]. 无机盐工业, 2026, 58(1): 43-51.

ZHANG Jun, ZHU Hongying, JIANG Haiyun, ZHANG Weili, WU Ruomei, HU Weida, LEI Zhiyong, LIU Bin. Study on preparation and properties of tetravalent element high⁃entropy aluminosilicate ceramics[J]. Inorganic Chemicals Industry, 2026, 58(1): 43-51.

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简称	熵值	样品分组
HE-B1	1.32R	0.25（Y_1/2Yb_1/2）₄Al₂O₉·0.75（Y_1/2Yb_1/2）₂Si₂O₇
HE-B2	1.56R	0.25（Y_1/2Yb_1/2）₄Al₂O₉·0.75（Y_1/2Yb_1/2）₂（Si_1/2Zr_1/2）₂O₇
HE-B3	1.68R	0.25（Y_1/2Yb_1/2）₄Al₂O₉·0.75（Y_1/2Yb_1/2）₂（Si_1/3Zr_1/3Ti_1/3）₂O₇
HE-B4	1.76R	0.25（Y_1/2Yb_1/2）₄Al₂O₉· 0.75（Y_1/2Yb_1/2）₂（Si_1/4Zr_1/4Ti_1/4Ce_1/4）₂O₇

样品	四价平均离子半径/Å	离子半径方差/Å²	理论密度/（g·cm^-3）	实际密度/（g·cm^-3）	相对密度/%
HE-B1	0.400 0	0	4.436 3	4.371 4	98.5
HE-B2	0.560 0	0.025 6	4.487 3	4.377 0	97.5
HE-B3	0.576 7	0.027 6	4.458 7	4.301 5	96.4
HE-B4	0.650 0	0.029 4	4.509 2	4.298 9	95.3

样品	a/Å	b/Å	c/Å	β/（°）	空间群	结构
HE-B1	7.389 0	10.472 3	11.131 2	107.64	P-21/c	单斜
HE-B2	7.413 4	10.489 1	11.141 0	108.53	P-21/c	单斜
HE-B3	7.447 6	10.492 0	11.146 2	108.91	P-21/c	单斜
HE-B4	7.481 2	10.493 9	11.149 3	108.74	P-21/c	单斜

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四价元素高熵铝硅酸盐陶瓷的制备与性能研究

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