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

  • Jieguang Songa,b,*, Yue Liuc, Chunxiao Wua, Xueqing Yanga, Yipeng Gonga, Jianzhen Huanga, Chunyan Hea, Huihui Luoa and Aixia Chend

  • aKey laboratory for Industrial Ceramics of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China
    bResearch Institute of Sponge City, Pingxiang University, Pingxiang 337055 China
    cEngineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China
    dSchool of Mechanical and Materials Engineering; Jiujiang University, Jiujiang 332005, China

Abstract

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


Keywords: Cermet materials, alumina, aluminum, raw material, electric resistivity

This Article

  • 2020; 21(1): 21-25

    Published on Feb 28, 2020

  • 10.36410/jcpr.2020.21.1.21
  • Received on Jun 21, 2019
  • Revised on Dec 12, 2019
  • Accepted on Jan 21, 2020

Correspondence to

  • Jieguang Song

  • aKey laboratory for Industrial Ceramics of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China
    b

  • E-mail: sjg825@163.com