소각중성자 산란법을 이용한 도금층의 극미세 균열 형상의 괴비파괴적 분석
Non-destructive Analysis of Nano-sized Crack Morphology of Electro-deposit by Using Small Angle Neutron Scattering
최용(단국대학교); 신은주(한국원자력연구원); 한영수(한국원자력연구원); 성백석(한국원자력연구원)
49권 2호, 111~118쪽
초록
A method to quantitatively analyze the defects formed by the hydrogen evolution during electroplating for study hydrogen evolution mechanism 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 average defect size about 4.9 and 4.5 μm with rod or calabash shape, respectively. Current density change of the pulse plating for 1.5A/dm2 and 2.0 A/dm2 resulted in increasing the defect size from 3.3 to 7.8 μm. 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.
Abstract
A method to quantitatively analyze the defects formed by the hydrogen evolution during electroplating for study hydrogen evolution mechanism 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 average defect size about 4.9 and 4.5 μm with rod or calabash shape, respectively. Current density change of the pulse plating for 1.5A/dm2 and 2.0 A/dm2 resulted in increasing the defect size from 3.3 to 7.8 μm. 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.
- 발행기관:
- 한국표면공학회
- 분류:
- 기계공학