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Title: CORROSION BY FLUORIDE SOLUTIONS

Abstract

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)

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

Citation Formats

Shuler, W E. CORROSION BY FLUORIDE SOLUTIONS. United States: N. p., 1959. Web.
Shuler, W E. CORROSION BY FLUORIDE SOLUTIONS. United States.
Shuler, W E. 1959. "CORROSION BY FLUORIDE SOLUTIONS". United States.
@article{osti_4274695,
title = {CORROSION BY FLUORIDE SOLUTIONS},
author = {Shuler, W E},
abstractNote = {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)},
doi = {},
url = {https://www.osti.gov/biblio/4274695}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 1959},
month = {Sun Feb 01 00:00:00 EST 1959}
}

Technical Report:
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