In-situ synthesis and reaction mechanism of β-SiAlON in the Al-Si3N4-Al2O3 composite material. Issue 1 (January 2017)

• Record Type: Journal Article
• Authors: Jiang, Peng; Wu, Xiaofang; Xue, Wendong; Chen, Junhong; Wang, Wei; Li, Yong
• Is Part Of: Ceramics international. Volume 43:Issue 1(2017)Part B
• Page Start: 1335
• Page End: 1340
• Publication Date: 2017-01
• Subjects: Al-Si3N4-Al2O3 composite material -- In-situ synthesis -- β-SiAlON -- Reaction mechanism; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.10.088
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: An Al-Si3 N4 -Al2 O3 composite material has been successfully prepared by sintering at 1300 °C under nitrogen atmosphere, and X-ray diffraction, scanning electronic microscopy, and electronic differential system were used for its characterization. β-SiAlON with Z=1 (Si5 AlON7 ) appears in the as-synthesized composite material as a reinforcing phase leading to an improvement of the overall physical properties of the Al-Si3 N4 -Al2 O3 composite. The thermal dynamic analysis of the reaction indicates that Al reacts to Al4 C3 and Al4 O4 C. Our thermal dynamic analysis reveals that the addition of Si3 N4 to Al4 O4 C leads to the formation of β-SiAlON.