Corrosion studies of A216 grade WCA steel in hydrothermal magnesium-containing brines
The US Department of Energy's Salt Repository Project (SRP) is investigating the general corrosion resistance of cast mild steel as a candidate material for waste package containers. Evaluation of this material is being performed at the Pacific Northwest Laboratory in environments simulating expected repository conditions. General corrosion studies of mild steel (ASTM A216 grade WCA) in the as-cast and normalized conditions were conducted in hydrothermal halite-saturated (saturated at ambient temperature) brine environments simulating a ''dissolution'' and an ''inclusion'' brine. Corrosion tests were also performed in brines similar to the inclusion brine but containing magnesium concentrations ranging from 1000 to 30,000 ppM to investigate the effect of magnesium on the corrosion behavior. Corrosion rates of the cast mild steel were found to increase with increasing temperature and with increasing magnesium concentration. Some possible mechanisms that explain the observed behavior are presented. 8 refs., 7 figs., 2 tabs.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5497630
- Report Number(s):
- PNL/SRP-SA-15413; CONF-8711100-6; ON: DE88005898
- Resource Relation:
- Conference: Symposium on the scientific basis for nuclear waste management, Boston, MA, USA, 30 Nov 1987; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
BRINES
CORROSIVE EFFECTS
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
CONTAINERS
EXPERIMENTAL DATA
MAGNESIUM COMPOUNDS
RESPONSE MODIFYING FACTORS
SALT DEPOSITS
STEELS
TEMPERATURE DEPENDENCE
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
DATA
GEOLOGIC DEPOSITS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MANAGEMENT
MATERIALS
NUMERICAL DATA
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
053000 - Nuclear Fuels- Environmental Aspects