Radiation-induced alkali formation and its effect on the corrosion of Grade-12 titanium in rock salt nuclear waste repositories

Conference · Tue Jan 01 00:00:00 EST 1985

OSTI ID:6109005

Ahn, T M; Panno, S V

Natural rock salt was gamma irradiated at a dose rate of 8 x 10/sup 6/ rad/h for times up to 1338 h. Subsequent dissolution in water produced high pH solutions. The corrosion properties of ASTM Grade-12 titanium were evaluated in simulated alkaline rock salt brines. The uniform corrosion rates were enhanced compared to those for neutral solutions, but crevice corrosion rates were retarded because of difficulties in obtaining high acidity in the crevice region. Hydrogen uptake was enhanced because of the chemical dissolution of the oxide layer. Upon hydrogenation, tensile samples showed slow-strain-rate embrittlement. Stress corrosion cracking, however, was not detected in the alkaline brines. 23 references, 8 figures, 6 tables.

• Research Organization: Brookhaven National Lab., Upton, NY (USA); Weston Consultants, Rockville, MD (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6109005
• Report Number(s): BNL-NUREG-35849; CONF-850311-9; ON: TI85006963
• Resource Relation: Conference: National Association of Corrosion Engineers annual meeting and materials performance and corrosion show, Boston, MA, USA, 25 Mar 1985
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
BRINES
CORROSIVE EFFECTS
TITANIUM BASE ALLOYS
CORROSION
BENCH-SCALE EXPERIMENTS
CHEMICAL RADIATION EFFECTS
DISSOLUTION
EXPERIMENTAL DATA
PH VALUE
SALT DEPOSITS
TEMPERATURE EFFECTS
ALLOYS
CHEMICAL REACTIONS
CHEMISTRY
DATA
GEOLOGIC DEPOSITS
INFORMATION
NUMERICAL DATA
RADIATION CHEMISTRY
RADIATION EFFECTS
TITANIUM ALLOYS
360105* - Metals & Alloys- Corrosion & Erosion
052002 - Nuclear Fuels- Waste Disposal & Storage