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Title: CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS

Abstract

Fuel elements clad with Zr or containing Zr as a diluent can be recovered by a fluoride-volatility process. The first step consists of hydrofluorination of the elements in a bath of molten fluoride salts using an HF sparge. In this case the two salt systems considered were NaF-ZrF/sub 4/ and NaF- LiF. Materials evaluated at Battelle for possible use in the construction of this hydrofluorinator include Inconel, A'' Nickel, copper, silver, Monel, Hastelloy B, Hastelloy W, INOR-1, and INOR-8. The metals were exposed to molten fluoride salts through which HF was bubbled continuously. The data indicate that the NaF-LiF systems are much more corrosive than the NaF-ZrF/sub 4/ system. The systems are most corrosive when the alkali fluoride component is high. An elevation in temperature increases the corrosion significantly as does an increase in the HF flow rate. Hydrogen in the HF flow stream retards the corrosion of the sodiumzirconium salts significantly, but appears to have less effect on the sodium -lithium systems. The areas at the interface of the liquid and vapor phases were most seriously damaged under the exposure conditions usually used. However, appreciable reduction in attack was experienced when zirconium was actually hydrofluorinated. INOR-8 was the mostmore » promising of the materials evaluated. (auth)« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Battelle Memorial Inst., Columbus, Ohio
OSTI Identifier:
4246070
Report Number(s):
BMI-1348
NSA Number:
NSA-13-016087
DOE Contract Number:  
W-7405-ENG-92
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; ALKALI METALS; ALUMINUM ALLOYS; CHROMIUM ALLOYS; COMPOUNDS; COPPER ALLOYS; CORROSION; FABRICATION; FLUID FLOW; FLUORIDES; FLUORINATION; FUEL ELEMENTS; FUSED SALTS; HASTELLOY; HYDROFLUORIC ACID; HYDROGEN; INCONEL ALLOYS; INOR-8; LABORATORY EQUIPMENT; LIQUIDS; LITHIUM FLUORIDES; MOLYBDENUM ALLOYS; MONEL; NICKEL ALLOYS; NIOBIUM ALLOYS; PHASE DIAGRAMS; SILVER; SODIUM FLUORIDES; SURFACES; TEMPERATURE; TITANIUM ALLOYS; VAPORS; VOLATILITY; ZIRCONIUM; ZIRCONIUM FLUORIDES

Citation Formats

Miller, P.D., Peterson, C.L., Stewart, O.M., Stephan, E.F., and Fink, F.W. CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS. United States: N. p., 1959. Web. doi:10.2172/4246070.
Miller, P.D., Peterson, C.L., Stewart, O.M., Stephan, E.F., & Fink, F.W. CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS. United States. doi:10.2172/4246070.
Miller, P.D., Peterson, C.L., Stewart, O.M., Stephan, E.F., and Fink, F.W. Mon . "CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS". United States. doi:10.2172/4246070. https://www.osti.gov/servlets/purl/4246070.
@article{osti_4246070,
title = {CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS},
author = {Miller, P.D. and Peterson, C.L. and Stewart, O.M. and Stephan, E.F. and Fink, F.W.},
abstractNote = {Fuel elements clad with Zr or containing Zr as a diluent can be recovered by a fluoride-volatility process. The first step consists of hydrofluorination of the elements in a bath of molten fluoride salts using an HF sparge. In this case the two salt systems considered were NaF-ZrF/sub 4/ and NaF- LiF. Materials evaluated at Battelle for possible use in the construction of this hydrofluorinator include Inconel, A'' Nickel, copper, silver, Monel, Hastelloy B, Hastelloy W, INOR-1, and INOR-8. The metals were exposed to molten fluoride salts through which HF was bubbled continuously. The data indicate that the NaF-LiF systems are much more corrosive than the NaF-ZrF/sub 4/ system. The systems are most corrosive when the alkali fluoride component is high. An elevation in temperature increases the corrosion significantly as does an increase in the HF flow rate. Hydrogen in the HF flow stream retards the corrosion of the sodiumzirconium salts significantly, but appears to have less effect on the sodium -lithium systems. The areas at the interface of the liquid and vapor phases were most seriously damaged under the exposure conditions usually used. However, appreciable reduction in attack was experienced when zirconium was actually hydrofluorinated. INOR-8 was the most promising of the materials evaluated. (auth)},
doi = {10.2172/4246070},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {6}
}