한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제36권5호
  • /
  • Pages.379-385
  • /
  • 2003
  • /
  • 1225-8024(pISSN)
  • /
  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
권호 표지

고속도금된 Zn-Cr 및 Zn-Cr-X 3원합금 도금층의 표면조직, 광택도 및 경도

Surface morphology, Glossiness and Hardness of Zn-Cr and Zn-Cr-X ternary alloy Electrodeposits

  • 예길촌 (영남대학교 재료금속공학부) ;
  • 김대영 (영남대학교 재료금속공학부) ;
  • 서경훈 (영남대학교 재료금속공학부)
  • 발행 : 2003.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The surface morphology, the glossiness and the hardness of Zn-Cr and Zn-Cr-X(X:Co, Mn) alloy electrodeposits were investigated by using chloride bath with EDTA additive and flow cell system. The surface morphology of Zn-Cr alloy and Zn-Cr-Mn alloy changed from fine needle shape crystalline structure to colony structure of fine granular crystallites with increasing current density in the range of 20-100 $A/dm^2$. The surface morphology of Zn-Cr-Co alloy deposited from low Co concentration bath(2.5-10 g/$\ell$) was similar to that of Zn-Cr alloy, while that of Zn-Cr-Co alloy deposited from high cobalt concentration bath was fine granular crystalline structure in the same range of current density. The glossiness of Zn-Cr and Zn-Cr-Mn alloy increased noticeably with increasing current density, while that of Zn-Cr-Mn alloy decreased with increasing Mn concentration of bath in high current density region. The glossiness of Zn-Cr-Co alloy deposited from low Co concentration bath increased with current density while that of the alloy from high Co concentration bath decreased with increasing current density. The hardness of Zn-Cr and Zn-Cr-X alloy increased noticeably with current density.

키워드

참고문헌

  1. Urakawa et at., U.S PAT., 5,458,764 Oct. 17 (1995)
  2. S. Suzuki and A. Fukuda, CAMP-ISIJ, 4 (1991) 1601-1602
  3. Kanamura et at., U.S PAT., 4,897,317 Jan.3O (1990)
  4. T. Kanamura, S. Suzuki and K. Arai, GALVANOTECH. '92, sept. 8-10, Verlag Stahleisen, Dusseldorf, (1992) 331
  5. Otajima, et al., JP4-304387, Oct. 27 (1992)
  6. D.S. Ahn, POSCO reseach Rep. (1995, 2000)
  7. Otajima, et al., JP4-314885, Nor. 6 (1992)
  8. G.C. Ye, D.Y. Kim and G.H. Suh, J. Korea Inst. Surf. Eng., 36 (2) (2003) 256
  9. R. Weil and H.C. Cook., J. Electrochem. Soc., 109 (1962) 295 https://doi.org/10.1149/1.2425403
  10. D.S. Ahn, D.Y. Kim and G.C. Ye, J. Korean Inst. Surf. Eng., 35(4) (2002) 232
  11. D.S. Ahn, 'Deposition mechanism and characteristics of Zn and Zn-Cr alloy', Ph.D thesis, Yeungnam Umiv. (Dec, 2002) 57-58
  12. M. Ohring, The materials science of thin films, Academic press, (1992) 510
  13. T. Burakowski and T. Wierzchon, Surface Eng. of Metals, CRC press (1970) 78