Influence of CaO-Y2O3 as Sintering Aid on the Microstructure and Properties of AlN Ceramics

Abstract

Abstract: The property and microstructure of hot-pressure and normal-pressure sintered AlN ceramics doped with CaO-Y₂O₃ were studied in this paper. The results obtained show
that the second phase in the hot-pressure sintered AlN is Y₃Al₅O₁₂ and that in the normal-pressure sintered AlN is Y₃Al₅O₁₂and Ca₃Y₂O₆.
The volume fraction of the second phase and the oxygen content dissolved in the AlN lattice of hot-pressure sintered AlN ceramics are lower than that of normal-pressure
sintered AlN. The hot-pressure sintered AlN ceramic has good microstructure and high thermal conductivity of 200W/m·K.

Key words: aluminum nitride, calcia-yttria, microstructure, thermal conductivity

CLC Number:

TQ174

HUANG Xiao-Li,MA Qing-Zhi,LI Fa,LIU Hui-Qing. Influence of CaO-Y₂O₃ as Sintering Aid on the Microstructure and Properties of AlN Ceramics[J]. Journal of Inorganic Materials.

[1]	SUN Jing, LI Xiang, MAO Xiaojian, ZHANG Jian, WANG Shiwei. Effect of Lauric Acid Modifier on the Hydrolysis Resistance of Aluminum Nitride Powders [J]. Journal of Inorganic Materials, 2025, 40(7): 826-832.
[2]	MU Haojie, ZHANG Yuanjiang, YU Bin, FU Xiumei, ZHOU Shibin, LI Xiaodong. Preparation and Properties of ZrO₂ Doped Y₂O₃-MgO Nanocomposite Ceramics [J]. Journal of Inorganic Materials, 2025, 40(3): 281-289.
[3]	FENG Guanzheng, YANG Jian, ZHOU Du, CHEN Qiming, XU Wentao, ZHOU Youfu. Mechanism for Hydrothermal-carbothermal Synthesis of AlN Nanopowders [J]. Journal of Inorganic Materials, 2025, 40(1): 104-110.
[4]	FAN Wugang, CAO Xiong, ZHOU Xiang, LI Ling, ZHAO Guannan, ZHANG Zhaoquan. Anticorrosion Performance of 8YSZ Ceramics in Simulated Aqueous Environment of Pressurized Water Reactor [J]. Journal of Inorganic Materials, 2024, 39(7): 803-809.
[5]	CHEN Qian, SU Haijun, JIANG Hao, SHEN Zhonglin, YU Minghui, ZHANG Zhuo. Progress of Ultra-high Temperature Oxide Ceramics: Laser Additive Manufacturing and Microstructure Evolution [J]. Journal of Inorganic Materials, 2024, 39(7): 741-753.
[6]	JIANG Lingyi, PANG Shengyang, YANG Chao, ZHANG Yue, HU Chenglong, TANG Sufang. Preparation and Oxidation Behaviors of C/SiC-BN Composites [J]. Journal of Inorganic Materials, 2024, 39(7): 779-786.
[7]	WANG Weiming, WANG Weide, SU Yi, MA Qingsong, YAO Dongxu, ZENG Yuping. Research Progress of High Thermal Conductivity Silicon Nitride Ceramics Prepared by Non-oxide Sintering Additives [J]. Journal of Inorganic Materials, 2024, 39(6): 634-646.
[8]	ZHENG Yawen, ZHANG Cuiping, ZHANG Ruijie, XIA Qian, RU Hongqiang. Fabrication of Boron Carbide Ceramic Composites by Boronic Acid Carbothermal Reduction and Silicon Infiltration Reaction Sintering [J]. Journal of Inorganic Materials, 2024, 39(6): 707-714.
[9]	JIN Min, MA Yupeng, WEI Tianran, LIN Siqi, BAI Xudong, SHI Xun, LIU Xuechao. Growth and Characterization of Large-size InSe Crystal from Non-stoichiometric Solution via a Zone Melting Method [J]. Journal of Inorganic Materials, 2024, 39(5): 554-560.
[10]	XUE Yifan, LI Weijie, ZHANG Zhongwei, PANG Xu, LIU Yu. Process Control of PyC Interphases Microstructure and Uniformity in Carbon Fiber Cloth [J]. Journal of Inorganic Materials, 2024, 39(4): 399-408.
[11]	SUN Chuan, HE Pengfei, HU Zhenfeng, WANG Rong, XING Yue, ZHANG Zhibin, LI Jinglong, WAN Chunlei, LIANG Xiubing. SiC-based Ceramic Materials Incorporating GNPs Array: Preparation and Mechanical Characterization [J]. Journal of Inorganic Materials, 2024, 39(3): 267-273.
[12]	ZHENG Jiaqian, LU Xiao, LU Yajie, WANG Yingjun, WANG Zhen, LU Jianxi. Functional Bioadaptability in Medical Bioceramics: Biological Mechanism and Application [J]. Journal of Inorganic Materials, 2024, 39(1): 1-16.
[13]	WANG Shuling, JIANG Meng, WANG Lianjun, JIANG Wan. n-Type Pb-free AgBiSe₂ Based Thermoelectric Materials with Stable Cubic Phase Structure [J]. Journal of Inorganic Materials, 2023, 38(7): 807-814.
[14]	CHEN Qiang, BAI Shuxin, YE Yicong. Highly Thermal Conductive Silicon Carbide Ceramics Matrix Composites for Thermal Management: a Review [J]. Journal of Inorganic Materials, 2023, 38(6): 634-646.
[15]	HE Danqi, WEI Mingxu, LIU Ruizhi, TANG Zhixin, ZHAI Pengcheng, ZHAO Wenyu. Heavy-Fermion YbAl₃ Materials: One-step Synthesis and Enhanced Thermoelectric Performance [J]. Journal of Inorganic Materials, 2023, 38(5): 577-582.

Influence of CaO-Y₂O₃ as Sintering Aid on the Microstructure and Properties of AlN Ceramics

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments