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

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.

• Periodical: Solid State Phenomena (Volume 279)
• Pages: 104-108
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.279.104
• Online since: August 2018
• Authors: Jie Guang Song*, Lin Chen, Yun Xiang, Yue Liu, Songlin Guo, Xi Ling Zhang, Song Lin Guo, Yue Ning Qin
• Keywords: Densification Mechanism, Metal Ceramics, Powder Metallurgy Method, Sintered Temperature

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