Analytical treatment of diffusional growth kinetics of two intermetallic-compound layers

• Published in: Journal of materials science Vol. 39; no. 21; pp. 6615 - 6617
• Main Authors: DYBKOV, O. V, DYBKOV, V. I
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01.11.2004; Springer Nature B.V
• Subjects: Applied sciences; Exact sciences and technology; Materials science; Metals. Metallurgy; Kinetics; Diffusion; Growth; Intermetallic compound
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1023/B:JMSC.0000044905.89450.f5

Intermetallic compounds are known to form continuous layers at phase interfaces in the course of many technological processes such as hot-dip protective coating of solid surfaces with metals, soldering, welding of dissimilar metals and alloys, sintering in the presence of the liquid phase, making very-large-scale-integrated circuits, etc. The diffusional growth kinetics of intermetallic layers are usually treated using parabolic equations of the type x2 = 2kt, where x is the layer thickness, k is the layer growth-rate constant and t is the time. For sufficiently thick layers, such equations produce quite a satisfactory fit to the experimental data. However, growth kinetics of the ApBq and ArBs layers at the diffusional stage of their formation at the interface between simple substances A and B dare somewhat more complicated and described by a system of two non-linear equations.