Report of Investigations 9324: Electrochemical Impedance Spectroscopy Study of Corrosion of Painted Cold-Rolled and Electrogalvanized Sheet Steel for Automotive Use

Details

• Journal Article:
  Rolla, MO: U.S. Department of the Interior, Bureau of Mines, RI 9324
• Personal Author:
  Dattilo, Marion ; Miller, Vernon R. ; Prater, Raymond B.
• Description:
  The U.S. Bureau of Mines has been conducting research on the use of waste-derived zinc as a partial replacement for pure zinc in the electrogalvanizing process. The end product of this process is automotive sheet, which has enhanced cosmetic protection over previously used cold-rolled (cr) steel. In this study, primer- coated specimens of cr and electrogalvanized (eg) steel were subjected to the on-vehicle environment and monitored periodically by electrochemical impedance spectroscopy (eis) during immersion in 1m nacl solution. The results of these tests were compared with immersion-only conditions. Scanning electron microscope (sem) and energy-dispersive x-ray (edx) techniques were also used to evaluate the corrosion processes and compare them with atmospheric exposure specimens. Eis was found to measure the corrosion associated with on-vehicle exposure, thus providing an excellent screening technique for evaluation of the performance of eg automotive sheet steel. [Description provided by NIOSH]
• Subjects:
  Electroplating Metals Motor Vehicles Occupational Health Paint Safety
• Keywords:
  Coatings; Paints; Corrosion; Automobiles; Electroplating; Steels; Electrochemistry; Impedance; Spectroscopy; Selection; Electron microscopes; Evaluation
• Source:
  Rolla, MO: U.S. Department of the Interior, Bureau of Mines, RI 9324, 1990 Jan; :1-11
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Publisher:
  Bureau of Mines
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  Missouri ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RORC - Rolla Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  17 pdf pages
• NIOSHTIC Number:
  nn:10008686
• Federal Fiscal Year:
  1990
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b0250d70644fe038538b6272ed2fb4115af933bba815b4509a3849057c3c81e611ee4fc41ad6a23f60859ee329d39a9b3fb75128f74224acb44c51dbf3953fcc
• Download URL:
  https://stacks.cdc.gov/view/cdc/10452/cdc_10452_DS1.pdf
• File Type:
  [PDF - 6.46 MB ]