Investigation on mechanical properties of AlON ceramics synthesized by spark plasma sintering. Issue 3 (March 2023)

• Record Type: Journal Article
• Authors: Jia, Xiao-Tong; Zhang, Zhao-Hui; Li, Xian-Yu; Xu, Tian-Hao; Liu, Luo-Jin; Wang, Qiang; Jia, Zhao-Hu; Cheng, Xing-Wang
• Is Part Of: Journal of the European Ceramic Society. Volume 43:Issue 3(2023)
• Page Start: 889
• Page End: 899
• Publication Date: 2023-03
• Subjects: AlON -- Spark plasma sintering -- Microstructure -- Mechanical property; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2022.10.054
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: AlON ceramics were prepared by spark plasma sintering (SPS) with raw materials (60 mol% Al2 O3 and 40 mol% AlN) and sintering aids (0.16 wt% Y2 O3 + 0.3 wt% MgO + 0.06 wt% La2 O3 ). The effects of the SPS parameters on the microstructures and mechanical properties of the SPSed AlON ceramics were investigated systematically. This investigation suggested that when the sintering temperature was 1580 ℃, the sintering pressure was 50 MPa, and the holding time was 5 min, the AlON ceramics with excellent mechanical and optical performances were successfully synthesized. They exhibited a high hardness of 18.97 GPa, a good bending strength of 538 MPa, a fracture toughness of 5.88 MPa·m 1/2, and particularly, a high transmittance of 76.28% at 750 nm.