INTERMETALLIC COMPOUND FORMATION IN Ni/Sn DIFFUSION COUPLE AT ATMOSPHERIC AND AT 10−8 ATMOSPHERE PRESSURE

Author:

ADIOUI N.1,HANNECH E. B.1,GUERGUEB W.1,BOUOUDINA M.2

Affiliation:

1. LESIMS, Department of Physics, Badji Mokhtar Annaba University, Annada 23000, Algeria

2. Department of Physics, College of Science, University of Bahrain, P. O. Box 32038, Kingdom of Bahrain

Abstract

The microstructure resulting from diffusion reactions, at solid-state temperatures, in Ni/Sn couples has been studied by scanning electron microscopy (SEM) and energy dispersive X-ray (EDX). The Ni3Sn4 phase was the only reaction product which formed in the couples at temperatures from 150[Formula: see text]C to 220[Formula: see text]C. The growth kinetics of Ni3Sn4 layer followed the parabolic law with an apparent activation energy of 104[Formula: see text]kJ[Formula: see text]mol[Formula: see text]. The effect of the atmosphere on the microstructure of the interfacial layer was investigated at 220[Formula: see text]C for a pressure of 10[Formula: see text][Formula: see text]atm. A decrease in the growth rate of the phase layer was observed.

Publisher

World Scientific Pub Co Pte Lt

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics

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