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Effect of Sintering Temperature on the Densification Mechanism of Al2O3-Al Metal Ceramics via the Powder Metallurgy Method

Authors :
Yue Liu
Lin Chen
Jie Guang Song
Yue Ning Qin
Yun Xiang
Xin Shuang Guo
Song Lin Guo
Xi Ling Zhang
Source :
Solid State Phenomena. 279:104-108
Publication Year :
2018
Publisher :
Trans Tech Publications, Ltd., 2018.

Abstract

Alumina ceramics with good mechanical and corrosion resistance are the ones of the most widely used engineering ceramics. The aluminum has high strength, high conductivity and high plasticity etc. so that aluminum ceramics are used in more and more industries. In this paper, the mass fraction of 25% Al2O3 powder and the mass fraction of 75% Al powder were mixed in the blender. Mixer speed is100r/min with mixing time of 3.5 h. Forming, sintering and a series of processes for preparing the alumina/aluminum metallic ceramic materials, through performance testing and analysis, found that the density of the sample firstly increased and then decreased with the increase of sintering temperature. A melting point is close to the sintering temperature and the density of the cermet can be made relatively high. When the sintering temperature is about 600°C and 700°C, the macro performance of sample is better. The cermet is sintered at 700°C and its microstructure is relatively better.

Details

ISSN :
16629779
Volume :
279
Database :
OpenAIRE
Journal :
Solid State Phenomena
Accession number :
edsair.doi...........035eb5c89c99115c90463ff92e546fd2