Microwave sintering of a combustion synthesized AIN powder

Cheng Yu Hsieh, Chun Nan Lin, Hung Jia Chen, Shyan-Lung Chung, Jiping Cheng, Dinesh K. Agrawal

Research output: Contribution to journalArticle

Abstract

We report our preliminary study on microwave sintering of a combustion synthesized AIN powder. The combustion synthesis method was previously developed by Chung et al. at National Cheng Kung University, and is characterized by simple processing, fast production, low cost, high product purity, and being capable of mass production. The AIN product obtained from this synthesis method was ground to have average particle sizes of 0.9μm (AIN-1) and 3.0 μm (AIN-2) for sintering experiments. Yttrium oxide was added to the AIN powder as sintering aid. The microwave sintering experiments were carried out at the Microwave Processing and Engineering Center in the Pennsylvania State University. The samples were sintered by microwave at 2.45 GHz in a multi-mode cavity. The power used ranged from 200W to 1 kW, and the sintering temperature ranged from 1600°C to 2000°C. The AIN-1 powder was sintered to ∼99% of theoretical density at a sintering temperature of 1800°C with a soaking time of 30 min and a Y2O3 content of 3-5 wt%. The AIN-2 powder was less sinterable than AIN-1 and 97.3% of theoretical density was obtained at a sintering temperature of 2000°C with a soaking time of 30 min and a Y2O3 content of 5 wt%. The thermal conductivities reached 122 and 132 W/m K for the specimens made from AIN-1 and AIN-2, respectively, when 5 wt% of Y2O3 was added. Effects of several important parameters on the thermal conductivity were discussed.

Original languageEnglish
Pages (from-to)621-629
Number of pages9
JournalJournal of the Chinese Institute of Chemical Engineers
Volume33
Issue number6
Publication statusPublished - 2002 Nov 1

Fingerprint

Powders
Sintering
Microwaves
Thermal conductivity
Combustion synthesis
Yttrium oxide
Processing
Temperature
Experiments
Particle size
Costs

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Hsieh, C. Y., Lin, C. N., Chen, H. J., Chung, S-L., Cheng, J., & Agrawal, D. K. (2002). Microwave sintering of a combustion synthesized AIN powder. Journal of the Chinese Institute of Chemical Engineers, 33(6), 621-629.
Hsieh, Cheng Yu ; Lin, Chun Nan ; Chen, Hung Jia ; Chung, Shyan-Lung ; Cheng, Jiping ; Agrawal, Dinesh K. / Microwave sintering of a combustion synthesized AIN powder. In: Journal of the Chinese Institute of Chemical Engineers. 2002 ; Vol. 33, No. 6. pp. 621-629.
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Hsieh, CY, Lin, CN, Chen, HJ, Chung, S-L, Cheng, J & Agrawal, DK 2002, 'Microwave sintering of a combustion synthesized AIN powder', Journal of the Chinese Institute of Chemical Engineers, vol. 33, no. 6, pp. 621-629.

Microwave sintering of a combustion synthesized AIN powder. / Hsieh, Cheng Yu; Lin, Chun Nan; Chen, Hung Jia; Chung, Shyan-Lung; Cheng, Jiping; Agrawal, Dinesh K.

In: Journal of the Chinese Institute of Chemical Engineers, Vol. 33, No. 6, 01.11.2002, p. 621-629.

Research output: Contribution to journalArticle

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AU - Hsieh, Cheng Yu

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AU - Chen, Hung Jia

AU - Chung, Shyan-Lung

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