Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (9): 1006-1010.doi: 10.15541/jim20170556

• Orginal Article • Previous Articles     Next Articles

Characterization and Evaluation on Mechanical Property of Mg0.27Al2.58O3.73N0.27 Transparent Ceramic

Zhou ZHANG(), Hao WANG(), Bing-Tian TU, Peng-Yu XU, Wei-Min WANG, Zheng-Yi FU   

  1. State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
  • Received:2017-11-20 Revised:2018-02-21 Online:2018-09-20 Published:2018-08-14
  • About author:ZHANG Zhou. E-mail: 15072300967@163.com
  • Supported by:
    The National Key Research and Development Program of China (2017YFB0310500);National Natural Science Foundation of China (51472195, 51502219)

Abstract:

Owing to excellent optical and mechanical properties, MgAlON transparent ceramic has been considered as a potential candidate for important military and civilian applications in recent years. In this study, several characterizations were conducted to evaluate the hardness, fracture toughness, and flexural strength of Mg0.27Al2.58O3.73N0.27 transparent ceramic. Flexural strength at room temperature of Mg0.27Al2.58O3.73N0.27 were further analyzed using Weibull statistic. The results show that the Vicker’s hardness, flexural strength, fracture toughness, and Young’s modulus of the transparent ceramic were equal to 15.1 GPa, 255 MPa, 2.56 MPa/m1/2, and 288 GPa, respectively, while the flexural strength of samples at 1200℃ was determined to be 125 MPa. The Weibull modulus of specimens was 4.5. Flexural strength and Vicker’s hardness of Mg0.27Al2.58O3.73N0.27 transparent ceramic were also investigated under different loading condition. The work reveals that mechanical properties of MgAlON transparent ceramic are higher than those of MgAl2O4 transparent ceramic, but a slightly lower than those of AlON transparent ceramic.

Key words: MgAlON, transparent ceramic, mechanical properties, Weibull statistic

CLC Number: 

  • TQ174