Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지

Black oxide coating on Invar steel

인바강재의 흑화처리

  • Kim, H. G. (Dept. of Metall. Eng., Seoul National Univ.) ;
  • Kang, T. (Dept. of Metall. Eng., Seoul National Univ.)
  • 김헌규 (서울대학교 금속공학과) ;
  • 강탁 (서울대학교 금속공학과)
  • Published : 1993.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Black magnetite film could be formed on Invar steel for shadows mask by iron electroplating in thickness of 0.46~0.63$\mu\textrm{m}$ on Invar steel and subsequent oxidation of iron by immersion in strongly alkaline soution for 30~60 minutes. blackness degreed of magnetite oxide film on Invar was C20BL90 in comparision of color chart of Dainippon Ink & Chemicals Inc. Co. and adhesion test showed excellent adhesion of oxide film on substrate. Magnetite oxide film grew up on iron in hot strongly alkaline solution according to 'Sato-Cohen' oxide film growth model.

Keywords