Accession Number:

ADA045511

Title:

Coso Geothermal Corrosion Studies.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL WEAPONS CENTER CHINA LAKE CALIF

Personal Author(s):

Report Date:

1977-10-01

Pagination or Media Count:

89.0

Abstract:

This report documents the results of geothermal corrosion studies conducted at the Coso Thermal Area, Naval Weapons Center, China Lake, California. Nine different common construction-grade piping materials were tested for periods up to about one year in three distinctive low-pressure, medium temperature environments acid-sulfate steam, groundwater-diluted steam, and hot mineralized alkaline water under anaerobic and aerobic conditions. Exposed specimens were analyzed principally by optical microscopy and X-ray diffraction techniques, and selectively by scanning electron microscopy, X-ray fluorescence, and atomic absorption spectroscopy. Corrosionerosion modes, rates, and principal insoluble corrosion products were established and mechanisms based on established theory proposed to account for the modes of deterioration. Corrosion results were compared for the three fluid systems, and specific materials were then recommended for use in each of the fluid types found at the Coso Thermal Area. Author

Subject Categories:

  • Mining Engineering
  • Properties of Metals and Alloys
  • Plastics
  • Pumps, Filters, Pipes, Tubing, Fittings and Valves

Distribution Statement:

APPROVED FOR PUBLIC RELEASE