Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Oxidation Mechanism of TiCrN Coatings Ion-plated on Steel Substrate

강 기판위에 이온 플레이팅된 TiCrN 박막의 산화기구

  • Lee, Dong-Bok (Center for Advanced Plasma Surface Technology, Sungkyunkwan University) ;
  • Kim, Gi-Young (Center for Advanced Plasma Surface Technology, Sungkyunkwan University)
  • 이동복 (성균관대학교 플라즈마 응용표면기술 연구센터) ;
  • 김기영 (성균관대학교 플라즈마 응용표면기술 연구센터)
  • Published : 2003.07.01
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Abstract

Coatings of TiCrN ion-plated on a steel substrate was oxidized at $800^{\circ}C$ in air, and their oxidation mechanism was presented. During oxidation, substrate elements and Ti and Cr in the coating always diffused outwardly to form the oxide scale. Simultaneously, oxygen from the atmosphere diffused inward1y to react with Ti and Cr to form $TiO_2$and $Cr_2$$O_3$, respectively. Also, the counter-diffusion of cations and oxygen resulted in some oxygen dissolution in the unoxidized TiCrN coating, and Fe dissolution in the oxide scale. When the Ti content in the coating was high, the $TiO_2$-forming tendency was strong, while when the Cr content was high, the $Cr_2$$O_3$-forming tendency was strong.

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References

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