The Effect of Chromium Particles on Nickel Electrodeposition

Details

• Personal Author:
  Walters RP ; Watson SW
• Description:
  To obtain an understanding of the mechanism of chromium particle occlusion in electrodeposited stainless-steel-type coatings, the U.S. Bureau of Mines has studied the effect of chromium particles on nickel electrodeposition. The chromium particles catalyzed nickel electrodeposition on a vitreous carbon surface. Chromium particle additions, when added to watt's-type electrolytes, of 0.33M, 0.67M, and 1.00M niso4, shifted the nickel reduction wave to more positive potentials on a vitreous carbon surface. From rotating cylinder electrode studies, it was concluded that nickel deposition with or without chromium particles is a kinetically limited rather than a mass-transfer-limited process. Electrochemical impedance spectroscopy experiments with and without chromium particles verified the rate-determining step proposed by epelboin, with the ni+(ads) limiting the nickel electrodeposition. The chromium particles appear to enhance the formation of this ni+(ads) intermediate. [Description provided by NIOSH]
• Subjects:
  Metals Minerals Mining Occupational Health Safety
• Keywords:
  Author Keywords: Electrodeposition Chromium Alloys Electrochemical Electrodes Mineral-processing Mining-industry Nickel Alloys Stainless Steel
• Series:
  Mining Publications
• ISSN:
  0013-4651
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Oregon ; OSHA Region 10
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  138
• Issue:
  12
• NIOSHTIC Number:
  nn:10011101
• Citation:
  J Electrochem Soc 1991 Dec; 138(12):3633-3637
• Federal Fiscal Year:
  1992
• Peer Reviewed:
  True
• Source Full Name:
  Journal of the Electrochemical Society
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8724785dfd69834f165aec581dd3b9139688650b329ecf0164d048cf76a075174b539a4d0411ca31c153f9e2b31c5bfc56bdbfa9d6ea924d71a44513c33d4fb6
• Download URL:
  https://stacks.cdc.gov/view/cdc/220134/cdc_220134_DS1.pdf
• File Type:
  [PDF - 592.60 KB ]