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Morphological Variations Of Nano-Scale Powder And Deposits Of Ain Produced By Vapor Phase Synthesis

Published online by Cambridge University Press:  02 July 2020

B.C. Di lello ,
F. J. Moura  and
I. G. Solόrzano
B.C. Di lello
Affiliation:
Department of Materials and Science and Metallurgy, PUC-Rio, Rio de Janeiro, Brazil
F. J. Moura
Affiliation:
Department of Materials and Science and Metallurgy, PUC-Rio, Rio de Janeiro, Brazil
I. G. Solόrzano
Affiliation:
Department of Materials and Science and Metallurgy, PUC-Rio, Rio de Janeiro, Brazil
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Extract

Aluminum Nitride (AIN) has arised as a promising synthetic material, valued for its high thermal conductivity coupled with high electrical resistivity. These properties, associated with the fact that AIN is nontoxic and has thermal expansion characteristics which closely match those of silicon, makes it an excellent material for electronic packaging. Currently two commercial processes are primaly used for the manufacture of AIN powder, the direct nitridation of the metal, and the carbothermic reduction of the alumina in the presence of nitrogem.

In this work, nanosized aluminum nitride particles were synthesized from the phase using ammonia and aluminum chloride vapor as reactants. This system consists of a vaporization system, ammonia (NH3) distributor, tubular synthesis reactor and powder collection system. The aluminum chloride (AlCl3) vapor starts to react with ammonia injected in the synthesis reactor inlet position (mixing zone). The aluminum nitride nucleates and grows along the reactor length. The aluminum nitride powder produced was collected and chemically and physically characterized.

Type
High Resolution Electron Microscopy
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 190 - 191
Copyright
Copyright © Microscopy Society of America

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