POLARIZATION METHODS FOR MEASURING THE CORROSION OF METALS BURIED UNDERGROUND

THE SCHWERDTFEGER "POLARIZATION-BREAK" METHOD AND THE STERN "POLARIZATION-RESISTANCE" METHOD WERE COMPARED ON BURIED ALUMINUM AND STEEL SPECIMENS. POLARIZATION DATA WERE EASIER TO INTERPRET WITH THE POLARIZATION METHOD. FURTHER, COMPARISONS OF CALCULATED CORROSION RATES BETWEEN VARIOUS INVESTIGATORS SHOULD BE MORE RELIABLE BY THE POLARIZATION RESISTANCE METHOD. IN CONDUCTING POLARIZATION EXPERIMENTS, THE HOLLER BRIDGE CIRCUIT WAS UTILIZED TO REMOVE OHMIC CONTRIBUTIONS FROM MEASURED POLARIZATION POTENTIALS. RELATIVELY LOW RESISTORS IN THE BRIDGE CIRCUIT DID NOT APPRECIABLY AFFECT CALCULATED CORROSION RATES, ALTHOUGH THE LOWER RESISTORS DID PERMIT POLARIZATION OF THE REFERENCE ELECTRODE IN THE CIRCUIT. /AUTHOR/

• Supplemental Notes:
  • Vol 4, No 3, PP 600-617, 9 FIG, 1 TAB, 18 REF
• Authors:
  • Jones, D A
  • Lowe, T A
• Publication Date: 1969-9

Media Info

• Serial:
  • Journal of Materials
  • Publisher: American Society for Testing and Materials (ASTM)

Subject/Index Terms

• TRT Terms: Aluminum; Corrosion; Measurement; Polarization; Resistors; Steel; Underground structures
• Old TRIS Terms: Resistance; Underground
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216904
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 29 1994 12:00AM