CORROSION STATUS: SULFEX-THOREX (Ni-o-nel) AND DAREX-THOREX (TITANIUM) AS OF JUNE 12, 1959

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Current results indicate probable over-all rates of about 0.2 mils/month for titanium vs. 1.5 to 3.0 mils/month for Ni-o-nel. Tests are not 100% comparable due to changes made in flowsheet conditions, but they have been of sufficient variation and length as to allow good predictions to be made. Both metals show some tendency toward local attack in Thorex solutions. These tendencies are increased by poor welding techniques. There is a possibility that a Ni-onel dissolver could be used for interim Zirflex processing although the rates obtained in scouting tests are relatively high (6 to 8 mils/month). Titanium shows no promise ... continued below

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14 p.

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Clark, W E June 29, 1960.

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Description

Current results indicate probable over-all rates of about 0.2 mils/month for titanium vs. 1.5 to 3.0 mils/month for Ni-o-nel. Tests are not 100% comparable due to changes made in flowsheet conditions, but they have been of sufficient variation and length as to allow good predictions to be made. Both metals show some tendency toward local attack in Thorex solutions. These tendencies are increased by poor welding techniques. There is a possibility that a Ni-onel dissolver could be used for interim Zirflex processing although the rates obtained in scouting tests are relatively high (6 to 8 mils/month). Titanium shows no promise of usefulness in either Zirflex or Sulfex on the basis of scouting tests. It can be used for dissolution of U-Al fuels in 8M HNO/sub 3/- Hg(N0/sub 3/)/sub 2/ (rate < 1 mil/month). If the choice between these two processes were made on the basis of present corrosion results alone, Darex-Thorex would be chosen. (auth)

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14 p.

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  • Other Information: Orig. Receipt Date: 31-DEC-61

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  • Report No.: CF-59-6-110
  • Grant Number: None
  • DOI: 10.2172/4098294 | External Link
  • Office of Scientific & Technical Information Report Number: 4098294
  • Archival Resource Key: ark:/67531/metadc872293

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 29, 1960

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  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 11, 2017, 3:43 p.m.

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Clark, W E. CORROSION STATUS: SULFEX-THOREX (Ni-o-nel) AND DAREX-THOREX (TITANIUM) AS OF JUNE 12, 1959, report, June 29, 1960; Tennessee. (digital.library.unt.edu/ark:/67531/metadc872293/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.