한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제49권2호
  • /
  • Pages.111-118
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  • 2016
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  • 1225-8024(pISSN)
  • /
  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
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소각중성자 산란법을 이용한 도금층의 극미세 균열 형상의 비파괴적 분석

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

  • 최용 (단국대학교 신소재공학과) ;
  • 신은주 (한국원자력연구원 하나로팀) ;
  • 한영수 (한국원자력연구원 하나로팀) ;
  • 성백석 (한국원자력연구원 하나로팀)
  • 투고 : 2016.03.18
  • 심사 : 2016.04.29
  • 발행 : 2016.04.30
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초록

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.

키워드

참고문헌

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