CORROSION BY FLUORIDE SOLUTIONS

Technical Report · Sun Feb 01 00:00:00 EST 1959

OSTI ID:4274695

Shuler, W E

A number of alloys were tested for resistance to corrosion in HF and HNO/ sub 3/ and mixtures of the two acids. The austenitic stainless steels and the higher chromenickel alloys of iron were most promising. Of the materials tested, stainless steel, type 309Cb, Carpenter 20, Durco D-10, Durimet 20, and Chlorimet 3 were the most resistant to separate solutions of HF and HNO/sub 3/. Each of these alloys showed a significant increase in corrosion rate with increase in temperature. Exposure to HNO/sub 3/ appeared to passivate Carpenter 20 toward HF. In the mixed acids, fluoride ion increased markedly the rate of corrosion of all materials tested. The corrosion data indicate that the use of HF or acidic fluoride solutions will require relatively frequent replacement of dissolver vessels. Stainless 309Cb appeared to be the best of the tested materials considering ease of fabrication, compatibility with the processing of other fuel elements that are dissolved with nitric acid, and corrosion resistance. (auth)

• Research Organization: Du Pont de Nemours (E.I.) & Co. Savannah River Lab., Augusta, Ga.
• DOE Contract Number: AT(07-2)-1
• NSA Number: NSA-13-011688
• OSTI ID: 4274695
• Report Number(s): DP-348
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-59
• Country of Publication: United States
• Language: English

Related Subjects

CHEMISTRY
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COBALT
COLLOIDS
CORROSION
EXPANSION
FLUORIDES
GAMMA SOURCES
HYDROFLUORIC ACID
IONS
IRON ALLOYS
MEASURED VALUES
METHACRYLIC ACID
MIXING
NICKEL ALLOYS
NIOBIUM ALLOYS
NITRIC ACID
PHASE DIAGRAMS
POLYETHYLENES
POLYMERS
RADIATION CHEMISTRY
RADIATION DOSES
REACTION KINETICS
REPROCESSING
SOLUTIONS
STABILITY
STAINLESS STEELS
TABLES
TEMPERATURE
TENSILE PROPERTIES
TESTING
USES
VESSELS