The Oxidation of Kovar(Fe-29Ni-17Co) in Humidified nitrogen

가습된 질소 분위기에서의 Kovar(Fe-29Ni-17Co)산화

  • 김병수 (한양대학교 무기재료공학과) ;
  • 김민호 (한국과학기술연구원 세라믹공정연구센터) ;
  • 김상우 (한국과학기술연구원 세라믹공정연구센터) ;
  • 최덕균 (한양대학교 무기재료공학과) ;
  • 손용배 (한국과학기술연구원 세라믹공정연구센터)
  • Published : 1999.11.01

Abstract

In order to form a uniform oxidation layer and spinel crystalline phase that was supposed to help strong bonding in Kovar(Fe-29Ni-17Co)to-glass sealing the humidified nitrogen (2.3%H2O/N2) was used as an oxidation atmosphere. Kovar oxidation was diffusion-contolled and the activation energy was 2.51 kcal/mol at 600-900$^{\circ}C$ After oxidation at 600$^{\circ}C$ the oxidation layer was under 1$\mu\textrm{m}$ thickness and crystalline phase was spinel which was found to be suitable for the Kovar-to-glass sealing.

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