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Compatibility of unsupported pyrolytic-carbon coated uranium dicarbide particles with water vapor

Author: J P Blakely; U.S. Atomic Energy Commission.
Publisher: Oak Ridge, Tenn. : Oak Ridge National Laboratory, 1964.
Series: ORNL, 3598.
Edition/Format:   eBook : Document : National government publication : EnglishView all editions and formats
Summary:
Five batches of pyrolytic-carbon-coated uranium carbide particles were exposed to partial pressures of water vapor ranging from 20 to 635 mm Hg at temperatures of 700 to 1100 deg C. All batches of coated particles had laminar type of coating and contained cores consisting principally of uranium dicarbide. The rate of reaction of the pyrolytic-carbon coatings with water vapor was determined from weight losses. The  Read more...
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Additional Physical Format: Print version:
Blakely, J.P.
Compatibility of unsupported pyrolytic-carbon coated uranium dicarbide particles with water vapor.
Oak Ridge, Tenn. : Oak Ridge National Laboratory, 1964
(OCoLC)464646559
Material Type: Document, Government publication, National government publication, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: J P Blakely; U.S. Atomic Energy Commission.
OCLC Number: 680482203
Reproduction Notes: Electronic reproduction. [S.l.] : HathiTrust Digital Library, 2010. MiAaHDL
Description: 1 online resource (iii, 29 pages) : illustrations, plates.
Details: Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.
Series Title: ORNL, 3598.
Responsibility: J.P. Blakely, N.V. Smith and L.G. Overholser.

Abstract:

Five batches of pyrolytic-carbon-coated uranium carbide particles were exposed to partial pressures of water vapor ranging from 20 to 635 mm Hg at temperatures of 700 to 1100 deg C. All batches of coated particles had laminar type of coating and contained cores consisting principally of uranium dicarbide. The rate of reaction of the pyrolytic-carbon coatings with water vapor was determined from weight losses. The extent of failure of the coatings during exposure was established by microscopic examination and leaching of the particles with 8M HNO/sub 3/. Differences in the protectiveness of coatings present on the various batches of particles are attributable, at least in part, to two types of attack by water vapor, a localized or pitting type and a more general type. Rapid failure of the coatings was indicated at 1100 deg C. The coatings on some batches of particles remained protective at temperatures of 800 to 1000 deg C. (auth).

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