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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (6): 2113-2121.DOI: 10.16552/j.cnki.issn1001-1625.2025.1174

• 陶瓷 • 上一篇    下一篇

微波烧结/热等静压制备Al2O3/SiCw复合陶瓷的微观组织与性能研究

范鑫芳1(), 洪东波1, 林亮亮2, 郑爱钦2, 王珏2, 殷增斌1()   

  1. 1.南京理工大学机械工程学院,南京 210094
    2.厦门金鹭特种合金有限公司,厦门 361006
  • 收稿日期:2025-11-24 修订日期:2026-01-23 出版日期:2026-06-15 发布日期:2026-07-14
  • 通信作者: 殷增斌,博士,教授。E-mail:zengbinyin@njust.edu.cn
  • 作者简介:范鑫芳(2002—),男,硕士研究生。主要从事微波烧结氧化铝陶瓷方面的研究。E-mail:443008047@qq.com
  • 基金资助:
    国家自然科学基金青年项目(52405490);博士后面上项目(2024M754140)

Microstructure and Properties of Al2O3/SiCw Composite Ceramics Prepared by Microwave Sintering and Hot Isostatic Pressing

FAN Xinfang1(), HONG Dongbo1, LIN Liangliang2, ZHENG Aiqin2, WANG Jue2, YIN Zengbin1()   

  1. 1.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
    2.Xiamen Golden Egret Special Alloy Co.,Ltd.,Xiamen 361006,China
  • Received:2025-11-24 Revised:2026-01-23 Published:2026-06-15 Online:2026-07-14

摘要:

氧化铝(Al2O3)陶瓷具有高硬度、优异的耐磨性和化学稳定性,在结构陶瓷领域具有广阔的应用前景。本研究采用微波烧结/热等静压(HIP)工艺制备了高性能Al2O3/SiCw复合陶瓷材料,研究了微波烧结工艺、碳化硅晶须(SiCw)含量和HIP后处理对Al2O3/SiCw微观组织和力学性能的影响。结果表明,当SiCw含量为7%(质量分数)时,在1 650 ℃下保温10 min微波烧结制备的Al2O3/SiCw的力学性能最佳,其相对密度、维氏硬度和断裂韧性分别为99.2%、18.62 GPa和4.85 MPa·m1/2;经HIP处理后,试样的性能均有所提升,其中添加10% SiCw的试样具有最佳的力学性能,相对密度从97.55%提升至99.56%,维氏硬度和断裂韧性分别为19.55 GPa和5.05 MPa·m1/2,相比于HIP处理前,维氏硬度提升了10.8%,断裂韧性提升了10.0%。

关键词: Al2O3/SiCw, 微波烧结, 热等静压处理, 微观组织, 力学性能

Abstract:

Alumina (Al2O3) ceramics are widely recognized for their high hardness, excellent wear resistance, and outstanding chemical stability, making them highly promising for structural applications. In this study, high-performance Al2O3/SiCw composite ceramics were fabricated using a combined process involving microwave sintering followed by hot isostatic pressing (HIP). The effects of microwave sintering parameters, silicon carbide whisker (SiCw) content, and HIP post-treatment on the microstructure and mechanical properties of Al2O3/SiCw were systematically investigated. The results indicate that with 7% (mass fraction) SiCw addition and microwave sintering at 1 650 ℃ for 10 min, the Al2O3/SiCw achieves optimal mechanical properties, exhibiting a relative density of 99.2%, Vickers hardness of 18.62 GPa, and fracture toughness of 4.85 MPa·m1/2. After HIP treatment, the properties of the specimens are further improved. In particular, the specimen with 10% SiCw shows the best mechanical property, with its relative density increasing from 97.55% to 99.56%, Vickers hardness reaching 19.55 GPa, and fracture toughness attaining 5.05 MPa·m1/2. Compared to the specimen before HIP treatment, the Vickers hardness and fracture toughness are enhanced by 10.8% and 10.0%, respectively.

Key words: Al2O3/SiCw, microwave sintering, hot isostatic pressing treatment, microstructure, mechanical property

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