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http://dx.doi.org/10.5695/JKISE.2016.49.2.111

Non-destructive Analysis of Nano-sized Crack Morphology of Electro-deposit by Using Small Angle Neutron Scattering  

Choi, Yong (Department of Materials Science and Engineering, Dankook University)
Shin, Eun Joo (HANARO, Korea Atomic Energy Research Institute)
Hahn, Young Soo (HANARO, Korea Atomic Energy Research Institute)
Seung, Baik Seok (HANARO, Korea Atomic Energy Research Institute)
Publication Information
Journal of the Korean institute of surface engineering / v.49, no.2, 2016 , pp. 111-118 More about this Journal
Abstract
A method to quantitatively analyze the defects formed by the hydrogen evolution during electroplating was suggested based on the theoretical approach of the small angle neutron scattering technique. In case of trivalent chrome layers, an isolated defect size due to the hydrogen evolution was about 40 nm. Direct and pulse plating conditions gave the average defect size of about 4.9 and $4.5{\mu}m$ with rod or calabash shape, respectively. Current density change of the pulse plating from $1.5A/dm^2$ to $2.0A/dm^2$ enlarged the average defect size from 3.3 to $7.8{\mu}m$. The defect morphology like rod or calabash was originated by inter-connecting the isolated defects. Small angle neutron scattering was useful to quantitatively evaluate defect morphology of the deposit.
Keywords
Electroplating; Trivalent chrome; Small angle neutron scattering; Defects; Non-destructive analysis method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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