Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지
DOI QR코드

DOI QR Code

The effect of Na2MoO4 addition on the formation and corrosion resistance of Cr-electroplated layer of low carbon steel

저탄소강의 크롬도금층 형성 및 내식성에 미치는 Na2MoO4 첨가의 영향

  • Bae, Ki Chang (Department of Metallurgical Engineering, Pukyong Nationa University) ;
  • Kim, Kiwook (Department of Metallurgical Engineering, Pukyong Nationa University) ;
  • Kim, Juho (Department of Metallurgical Engineering, Pukyong Nationa University) ;
  • Lee, Junghoon (Department of Metallurgical Engineering, Pukyong Nationa University)
  • 배기창 (부경대학교 금속공학과) ;
  • 김기욱 (부경대학교 금속공학과) ;
  • 김주호 (부경대학교 금속공학과) ;
  • 이정훈 (부경대학교 금속공학과)
  • Received : 2022.02.24
  • Accepted : 2022.02.26
  • Published : 2022.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

Presence of cracks in electrodeposited hard chromium layer, which provide a path of corrosive media to steel substrate, is a serious issue in metal finishing with chromium electroplating. In this study, we added sodium molybdate in an electrolyte for chromium electroplating bath. 130g/L of sodium molybdate in Sargent bath for chromium electroplating causes a codepostion of molybdenum with chromium in a rage of 0.61 ~ 3.14 wt.%. The co-deposited molybdenum enhances the crystallinity of chromium layer, thus the hardness is slightly decreases by the addition of molybdate in electrolyte. However, due to the co-deposition of molybdenum, a crack-free chromium layer could be electrodeposited. Such crack-free chromium layer shows a significantly improved corrosion resistance.

Keywords

Acknowledgement

이 논문은 부경대학교 자율창의학술연구비(2021년)에 의하여 연구되었음.

References

  1. N. Imaz, E. Garcia-Lecina, J. A. Diez, M. Ostra, M. Sarret, Trans. IMF 90, (2012) 259-266. https://doi.org/10.1179/0020296712Z.00000000046
  2. D. Lim, B. Ku, D. Seo, C. Lim, E. Oh, S. E. Shim, S.-H. Baeck, Int. J. Refract. Metals Hard Mater. 89, (2020) 105213-105217. https://doi.org/10.1016/j.ijrmhm.2020.105213
  3. M. H. Sohi, A. A. Kashi, S. M. M. Hadavi, J. Mat. Proc. Tech. 138, (2003) 219-222. https://doi.org/10.1016/S0924-0136(03)00075-X
  4. Y. Song, D.-T. Chin, Electrochim. Acta 48, (2002) 349-356. https://doi.org/10.1016/S0013-4686(02)00678-3
  5. S. W. Yang, H. J. Ryu, J. H. Kim, B. O. Lee, C. B. Lee, J. Nucl. Mater. 401, (2010) 98-103. https://doi.org/10.1016/j.jnucmat.2010.04.004
  6. K. M. Yin, C. M. Wang, Surf. Coat. Technol. 114, (1999) 213-223. https://doi.org/10.1016/S0257-8972(99)00046-8
  7. Z. Zeng, L. Wang, L. Chen, J. Zhang, Surf. Coat. Technol. 201, (2006) 2282-2288. https://doi.org/10.1016/j.surfcoat.2006.03.038
  8. T. Watanabe, Current Topics in Amorphous Materials, Infrared Phys. Technol., North-Holland (1993) 137.
  9. L. Zhang, Y. Jin, X. Wang, J. Cai, Q. Guan, High Temp. Mater. Process. 38, (2019) 444-451. https://doi.org/10.1515/htmp-2018-0065
  10. D. Del Pianta, J. Frayret, C. Gleyzes, C. Cugnet, J. C. Dupin, I. Le Hecho, Electrochim. Acta 284, (2018) 234-241. https://doi.org/10.1016/j.electacta.2018.07.114
  11. H. Shen, L. Wang, J. Sun, Surf. Coat. Technol. 385, (2020) 125450-125457. https://doi.org/10.1016/j.surfcoat.2020.125450
  12. H.-H. Sheu, C.-H. Lin, S.-Y. Jian, H.-B. Lee, B.-R. Yang, Int. J. Electrochem. Sci. (2016) 7099-7110.
  13. L. Xu, L. Pi, Y. Dou, Y. Cui, X. Mao, A. Lin, C. Fernandez, C. Peng, ACS Sustain. Chem. Eng. 8, (2020) 15540-15549. https://doi.org/10.1021/acssuschemeng.0c04529
  14. S. Y. Kang, D. W. Lee, J. Korean Inst. Surf. Eng. 47, (2014) 116-120. https://doi.org/10.5695/JKISE.2014.47.3.116
  15. J. -Y. Lee, N. V. Phoung, D. K. Kang, M. Kim, S. C. Kwon, J. Korean Inst. Surf. Eng. 43, (2010) 297-303. https://doi.org/10.5695/JKISE.2010.43.6.297
  16. G. -C. Ye, K. -H. Seo, J. Korean Inst. Surf. Eng. 37, (2004) 12-31.
  17. M. Kim, J. J. Lee, D. Y. Kim, S. U. Park, S. C. Kwon, J. Korean Inst. Surf. Eng. 37, (2004) 179-184.