IRRADIATION EFFECTS ON MASSIVE URANIUM MONO-CARBIDE

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The results of examinations of UC compounds having nominal compositions of uranium-4.6, -4.8, and 5.0 wt. % carbon after irradiation to burnups of from 400 to 15,000 Mwd/t of uranium are given. Density changes were small. varying from a minimum of 0.3% to a maximum of about 2.5%. Cracking occurred in all specimens; however. it can probably be largely attributed to thermal stresses and to oxidation. after decapsulation. of NaK entrapped in microcracks. Depletion of carbon appears to be occurring in the specimens having the nominal uranium-5 wt.% carbon composition. Metallographic examination shows that the UC/sub 2/ phase disappears at ... continued below

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Pages: 31

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Hare, A.W. & Rough, F.A. July 21, 1960.

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The results of examinations of UC compounds having nominal compositions of uranium-4.6, -4.8, and 5.0 wt. % carbon after irradiation to burnups of from 400 to 15,000 Mwd/t of uranium are given. Density changes were small. varying from a minimum of 0.3% to a maximum of about 2.5%. Cracking occurred in all specimens; however. it can probably be largely attributed to thermal stresses and to oxidation. after decapsulation. of NaK entrapped in microcracks. Depletion of carbon appears to be occurring in the specimens having the nominal uranium-5 wt.% carbon composition. Metallographic examination shows that the UC/sub 2/ phase disappears at high temperature and high burnup. The fission-gas-retention properties of the compounds appear quite good. In all cases. the amount of fission gas released was comparable with the calculated amount released by recoil. (auth)

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Pages: 31

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  • Other Information: Orig. Receipt Date: 31-DEC-60

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  • Report No.: BMI-1452
  • Grant Number: W-7405-ENG-92
  • DOI: 10.2172/4173525 | External Link
  • Office of Scientific & Technical Information Report Number: 4173525
  • Archival Resource Key: ark:/67531/metadc863116

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  • July 21, 1960

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Nov. 18, 2016, 7:21 p.m.

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Hare, A.W. & Rough, F.A. IRRADIATION EFFECTS ON MASSIVE URANIUM MONO-CARBIDE, report, July 21, 1960; Columbus, Ohio. (digital.library.unt.edu/ark:/67531/metadc863116/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.