The Nonelectrolytic Deposition of Titanium on Columbium Alloys from Fused Salts

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Abstract
A high‐temperature cell was designed for deposition of metallic coatings on refractory alloy substrates. The deposition of titanium from fused chloride and fluoride salts onto columbium alloys was investigated at several temperatures from 800° to 1100°C. The as‐deposited coatings were generally dense and adherent and exhibited excellent side‐to‐side and edge uniformity. An explanation of the driving force and a mechanism for nonelectrolytic deposition is proposed, and an activation energy for deposition is calculated.

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