High thermal conductivity A1N from combustion synthesized A1N powder

C. Y. Hsieh, C. W. Chang, S. L. Chung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A combustion synthesis method has been developed for synthesis of A1N powder. The A1N products thus obtained were ground to have an average particle size of 2μm for sintering. Yttrium oxide was added to the A1N powder as sintering aid. The sintering was carried out in a microwave field at 2.45 GHz with a single-mode cavity. The specimens were sintered at temperature ranging from 1800 to 1900°C with soaking times of 30 min to 3 hrs. The highest thermal conductivity of the as-sintered specimen achieved 195 W/mK. The as-sintered specimen was then placed in the microwave cavity again and was reheated at 1800°C under reducing atmosphere for a time ranging from 30 min to 3 h. The thermal conductivity of the specimen could achieve 235 W/mK.

Original languageEnglish
Title of host publicationProceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17
Pages148-156
Number of pages9
Publication statusPublished - 2008 Dec 1
Event29th International Thermal Conductivity Conference, ITCC29 and the 17th International Thermal Expansion Symposium, ITES17 - Birmingham, AL, United States
Duration: 2007 Jun 242007 Jun 27

Publication series

NameProceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17

Other

Other29th International Thermal Conductivity Conference, ITCC29 and the 17th International Thermal Expansion Symposium, ITES17
CountryUnited States
CityBirmingham, AL
Period07-06-2407-06-27

Fingerprint

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

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

Cite this

Hsieh, C. Y., Chang, C. W., & Chung, S. L. (2008). High thermal conductivity A1N from combustion synthesized A1N powder. In Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17 (pp. 148-156). (Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17).
Hsieh, C. Y. ; Chang, C. W. ; Chung, S. L. / High thermal conductivity A1N from combustion synthesized A1N powder. Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17. 2008. pp. 148-156 (Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17).
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Hsieh, CY, Chang, CW & Chung, SL 2008, High thermal conductivity A1N from combustion synthesized A1N powder. in Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17. Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17, pp. 148-156, 29th International Thermal Conductivity Conference, ITCC29 and the 17th International Thermal Expansion Symposium, ITES17, Birmingham, AL, United States, 07-06-24.

High thermal conductivity A1N from combustion synthesized A1N powder. / Hsieh, C. Y.; Chang, C. W.; Chung, S. L.

Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17. 2008. p. 148-156 (Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - A combustion synthesis method has been developed for synthesis of A1N powder. The A1N products thus obtained were ground to have an average particle size of 2μm for sintering. Yttrium oxide was added to the A1N powder as sintering aid. The sintering was carried out in a microwave field at 2.45 GHz with a single-mode cavity. The specimens were sintered at temperature ranging from 1800 to 1900°C with soaking times of 30 min to 3 hrs. The highest thermal conductivity of the as-sintered specimen achieved 195 W/mK. The as-sintered specimen was then placed in the microwave cavity again and was reheated at 1800°C under reducing atmosphere for a time ranging from 30 min to 3 h. The thermal conductivity of the specimen could achieve 235 W/mK.

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Hsieh CY, Chang CW, Chung SL. High thermal conductivity A1N from combustion synthesized A1N powder. In Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17. 2008. p. 148-156. (Proceedings of the 29th International Thermal Conductivity Conference, ITCC29 and the Proceedings of the 17th International Thermal Expansion Symposium, ITES17).