The Relationship between Microstructure and the Thermal Equilibrium Diagram of Au-Co Alloy Electrodeposit

Koichiro Inoue; Nobuto Sasaki; Takashi Sasadaira; Tohru Watanabe; Takeshi Nakata

doi:10.2320/matertrans.47.1546

Koichiro Inoue, Nobuto Sasaki, Takashi Sasadaira, Tohru Watanabe, Takeshi Nakata

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Keywords: gold sulfite, cobalt sulfate, gold-cobalt alloy, electrodeposits, microstructure, phase, equilibrium diagram

JOURNAL FREE ACCESS

2006 Volume 47 Issue 6 Pages 1546-1549

DOI https://doi.org/10.2320/matertrans.47.1546

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Abstract

An Au-Co alloy with an extensive composition range was electrodeposited from a gold sulfite and cobalt sulfate mixture. The Au-Co alloy electrodeposits were analyzed by XRD and TEM and the relationship between the phase and thermal equilibrium diagrams was investigated. The Au-Co alloy electrodeposits formed a solid solution over an extensive composition range. It was also revealed that the composition of the electrodeposited Au-Co alloy was equal to that of the quenched phase at a high temperature, about 950°C.

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