Effect of composition on the corrosion behavior of 316 stainless steel in flowing sodium. [/sup 54/Mn release rate]

Technical Report · Mon Mar 01 04:00:00 EST 1976

DOI:https://doi.org/10.2172/7188144· OSTI ID:7188144

Bates, J F; Brehm, W F

Type 316 stainless steel specimens irradiated and non-irradiated, with minor variations in C, N, Cr, Ni, Si, and Mn content, were exposed to flowing sodium in the Source Term Control Loop-1 facility. Test conditions of 604/sup 0/C, a sodium velocity of 6.7 m/s, and an oxygen content of 0.5 and 2.5 ppM were used to ascertain the effect of these compositional variations on the corrosion rate and on the /sup 54/Mn release rate. Variations in C, N, and Mn had no significant effect on the corrosion rate. The corrosion rate increased somewhat as the Ni and Si content of the steel was increased, and decreased with an increase in Cr content. Microprobe examination showed preferential leaching of Mn, Si, Cr, and Ni to depths of up to 10 ..mu..m (0.4 mil) after exposure times ranging from 5000 to 8000 hours. Variations in natural (/sup 55/Mn) content did not affect release rates of /sup 54/Mn generated by /sup 54/Fe(n,p)/sup 54/Mn. 10 fig, 4 tables. (auth)

• Research Organization: Hanford Engineering Development Lab., Richland, WA (USA)
• DOE Contract Number: E(45-1)-2170
• OSTI ID: 7188144
• Report Number(s): HEDL-TME-76-20
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALKALI METALS
ALLOYS
BETA DECAY RADIOISOTOPES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRYOGENIC FLUIDS
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
FLUID FLOW
FLUIDS
HEAT RESISTING ALLOYS
INTERMEDIATE MASS NUCLEI
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
KINETICS
MANGANESE 54
MANGANESE ISOTOPES
METALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN
QUANTITY RATIO
RADIATION EFFECTS
RADIOISOTOPES
REACTION KINETICS
SODIUM
STAINLESS STEEL-316
STAINLESS STEELS
STEELS