Whisker taper induced by heterogeneous chemical reaction

Experimental data are presented on the taper of silicon whiskers grown in an open chloride system. The whisker taper is shown to depend on the crystal growth rate, whisker radius and length, and process parameters. The experimental data are analyzed under the assumption that the size of the liquid d...

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Veröffentlicht in:Inorganic materials 2016-03, Vol.52 (3), p.239-243
1. Verfasser: Kozenkov, O. D.
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description Experimental data are presented on the taper of silicon whiskers grown in an open chloride system. The whisker taper is shown to depend on the crystal growth rate, whisker radius and length, and process parameters. The experimental data are analyzed under the assumption that the size of the liquid droplet on the whisker tip decreases because of the heterogeneous chemical reaction responsible for the etching of the metallic component of the alloy. The influence of the crystal radius and vapor phase composition on the flux that leads to a decrease in the size of the liquid droplet. A model is proposed for whisker tapering as a result of the heterogeneous chemical reaction responsible for the etching of the metal on the surface of the liquid phase, and conditions for the growth of zero-taper whiskers are discussed.
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subjects Chemical reactions
Chemistry
Chemistry and Materials Science
Chlorides
Crystal growth
Crystals
Droplets
Etching
Flux
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Liquids
Materials Science
title Whisker taper induced by heterogeneous chemical reaction
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