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The formation process of black trivalent chromium conversion coating on Zn electrodeposit

  • Haiping Liu
  • , Sifu Bi*
  • , Xiangguo Teng
  • , Yuanchun Yu
  • *Corresponding author for this work
  • School of Marine Science and Technology, Harbin Institute of Technology Weihai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A black trivalent chromium conversion coating (CCC) was obtained on Zn deposit in chromium trichloride solution at 55 °C. The formation process of trivalent CCC on Zn deposit were thoroughly investigated by using X-ray fluorescence spectrometer and X-ray photoelectron spectroscopy in combination with atomic force microscopy surface analysis. The trivalent CCC on Zn deposit is consisted of Zn, Cr, O, Ni, Co, P and N elements, with visible micro-cracks on the film's surface. The growth rate, the surface color and the morphology of this conversion coating vary with the dipping time.

Original languageEnglish
Title of host publicationFrontiers of Manufacturing Science and Measuring Technology II
Pages676-679
Number of pages4
DOIs
StatePublished - 2012
Externally publishedYes
Event2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology, ICFMM 2012 - Xi'an, China
Duration: 12 Jun 201213 Jun 2012

Publication series

NameAdvanced Materials Research
Volume503-504
ISSN (Print)1022-6680

Conference

Conference2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology, ICFMM 2012
Country/TerritoryChina
CityXi'an
Period12/06/1213/06/12

Keywords

  • Conversion coating
  • Trivalent chromium
  • Zn deposit

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