53 resultados para metallurgy
em University of Michigan
Resumo:
"March 1955."
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"January 1957 (TISE Issuance Date)."
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"July 1959 (TIS Issuance Date)."
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"January 1964 (DTIE Issuance Date)."
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"January 1965 (DTIE Issuance Date)."
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"TID-3572."
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"TID-3508 Metallurgy and Ceramics."
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Uranium is a ductile metal and cannot be comminuted to a fine powder by any mechanical means such as crushing, milling or grinding. Uranium, however, reacts readily with hydrogen and forms UH3, which is a fine powder of less than 400 mesh screen size. The factors controlling the rats of the hydride formation are: (a) The surface area of the metal; (b) the temperature at which the reaction takes place; (c) the pressure of hydrogen. In order to increase the reaction area, one has to hydride small metal pieces rather than a single mass. The hydrogen reacts with uranium metal at temperatures as low as 100 deg to 1500 deg, and the reaction rate becomes quite rapid at approximately 225 deg C. The hydrogen for this purpose has to be of high purity and any small amount of oxygen in hydrogen delays the start of the reaction.
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Includes index.
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"June 1961 (OIT Issuance Date)."
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Bibliographical footnotes.
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Mode of access: Internet.
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First edition, May, 1925. cf. verso of t.-p.
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Mode of access: Internet.
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"Contract AT-30-1 GEN 366."