Effect of citrate ions on the electrochemical migration of tin in thin electrolyte layer containing chloride ions. (November 2016)

• Record Type: Journal Article
• Authors: Liao, Bokai; Chen, Zhenyu; Qiu, Yubing; Zhang, Guoan; Guo, Xingpeng
• Is Part Of: Corrosion science. Volume 112(2016)
• Page Start: 393
• Page End: 401
• Publication Date: 2016-11
• Subjects: A. Tin -- B. Cyclic voltammetry -- B. Polarization -- B. SEM -- B. XPS -- C. Passivity; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2016.08.003
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: Effect of citrate ion on electrochemical migration of tin is studied. Citrate ion is found to suppress anodic dissolution and metallic ion transfer. Citrate ion acts as an inhibitor for tin via formation of tin-citrate complexes. The bias voltage is found to affect the inhibition role of citrate ion greatly. Abstract: The effect of tri-sodium citrate dehydrate on the electrochemical migration of tin in thin electrolyte layers containing chloride ions was investigated through potentiodynamic polarization, cyclic voltammetry, scanning electron microscopy, X-ray photoelectron spectroscopy, and optical techniques. The effects of applied bias voltage and concentration of citrate ions were also studied. Results showed that tri-sodium citrate dehydrate acts as an inhibitor by suppressing anodic dissolution and metallic ion transfer through the formation of tin citrate complexes. The mechanisms involved were proposed to explain the inhibition effect.