Fabrication and properties of Al2O3-Al cermet materials using different raw material composition parameter

• Published in: Journal of Ceramic Processing Research Vol. 21; no. 1; pp. 21 - 25
• Main Authors: Jieguang Song, Chunxiao Wu, Xueqing Yang, Aixia Chen, Jianzhen Huang, Chunyan He, Huihui Luo, Yue Liu, Yipeng Gong
• Format: Journal Article
• Language: English
• Published: 세라믹연구소 01.02.2020
• Subjects: 재료공학
• ISSN: 1229-9162; 2672-152X
• DOI: 10.36410/jcpr.2020.21.1.21

Cermet application is extensive because it retains the characteristics of ceramic materials and has the advantages of metalmaterials. In this paper, alumina/aluminum cermet materials were prepared through powder metallurgy method. Theinfluence of raw material formula on the properties of alumina/aluminum cermet was investigated on the basis that ceramicmaterials have good wear resistance and high thermal conductivity. Results show that when the mass ratio of alumina toaluminum is 1:3, the prepared cermet samples have excellent properties, highest density, and uniform distribution ofaluminum and alumina. MgO addition exhibits better effect, higher degree of densification, and renders higher hardness andstrength for the sample as compared with SiO2 and Y2O3 addition. The sintered cermet with composite powder prepared viaprecipitation has better properties and higher densities and surface hardness than that prepared via the ball mill method. Therelative density was 97.1%, surface hardness was 875 HV, and electric resistance was 0.0169 Ω·m. KCI Citation Count: 0