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이병찬(B. C. Lee) 한국자기학회 2006 韓國磁氣學會誌 Vol.16 No.2
The diffusion theory for spin injection from magnetic layer into nonmagnetic layer was reviewed. Basic equations were derived and applied to a ferromagnet/semiconductor/ferromagnet system. The spin polarization and magnetoresistance were calculated. The reason for difficulty in detecting spin injection with magnetoresistance was explained, and a possible solution was discussed.
자동차용 안전부품의 기계적 성질에 미치는 복탄처리의 영향
김무길 ( M. G. Kim ),정병호 ( B. H. Jung ),정상훈 ( S. H. Jung ),이병찬 ( B. C. Lee ),김상수 ( S. S. Kim ) 한국열처리공학회 2003 熱處理工學會誌 Vol.16 No.1
N/A Decarburized zone of metal tongue which is sued in seat belt for automobiles was carbon-restoration quenched and tempered using nitrogen-methanol gaseous atmosphere. The effects of microstructure and mechanical properties of metal tongue on the effectiveness of carbon-restoration during tempering was studied. Metal tongue showed 20~30㎛ decarburized zone. However, after carbon-restoration, it has uniform microstructure and thus hardness without decarburized zone. Carbon-restoration quenching and tempering process resulted in better wear and corrosion resistances than quenching and tempering process.