A Theoretical and Experimental Investigation of the Oxidation of Molybdenum at Temperatures at which Its Trioxide is Volatile

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Total Pages : 52 pages
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Book Synopsis A Theoretical and Experimental Investigation of the Oxidation of Molybdenum at Temperatures at which Its Trioxide is Volatile by : David R. Schryer

Download or read book A Theoretical and Experimental Investigation of the Oxidation of Molybdenum at Temperatures at which Its Trioxide is Volatile written by David R. Schryer and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical and experimental investigation of the oxidation of molybdenum to molybdenum trioxide at temperatures at which the trioxide is volatile has been carried out. A rate equation has been derived which includes the effects of mass-transfer parameters as well chemical parameters and is applicable to any situation for which a mass-transfer coefficient can be obtained. The derived equation has been applied to previously reported rate data taken under laboratory conditions using air and oxygen-helium mix-reported rate data taken under laboratory conditions using air and oxygen-helium mixtures flowing at low subsonic velocities, and a set of values for the activation energy of the oxidation of molybdenum has been obtained. The average of these values is 8.51 x 107 J-(kg-mole)−1 (20.3 kcal-(g-mole)−1) with a standard deviation of 2.1 percent. In addition, 32 molybdenum hemisphere-cylinder specimens have been oxidized in a Mach 2.1 heated airstream at a free-stream stagnation pressure of 1.07 x 106 N-m-−2 (10.5 atm) and free-stream stagnation temperatures from 1765°K to 2120°K. The stagnation-point surface temperature and recession rate were determined for each of the specimens. The observed recession rates were compared with the corresponding values predicted theoretically by the derived rate equation and agreement within a factor of about 2 was obtained for most specimens. However, a few specimens ignited, exhibiting recession rates much greater than those predicted theoretically. The high recession rates associated with ignition were found to be the result of a sharp rise in surface temperature which caused some melting of the specimens in addition to their normal oxidation.

A Theoretical and Experimental Investigation of the Oxidation of Molybdenum at Temperatures at which Its Trioxide is Volatile

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Total Pages : 50 pages
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Book Synopsis A Theoretical and Experimental Investigation of the Oxidation of Molybdenum at Temperatures at which Its Trioxide is Volatile by : David R. Schryer

Download or read book A Theoretical and Experimental Investigation of the Oxidation of Molybdenum at Temperatures at which Its Trioxide is Volatile written by David R. Schryer and published by . This book was released on 1966 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

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Total Pages : 388 pages
Book Rating : 4.:/5 (31 download)

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Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1969 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Government-wide Index to Federal Research & Development Reports

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Total Pages : 1016 pages
Book Rating : 4.:/5 (2 download)

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NASA Technical Report

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Total Pages : 636 pages
Book Rating : 4.:/5 (319 download)

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Download or read book NASA Technical Report written by and published by . This book was released on 1966 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA Scientific and Technical Reports

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Total Pages : 2300 pages
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Book Synopsis NASA Scientific and Technical Reports by : United States. National Aeronautics and Space Administration Scientific and Technical Information Division

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A Selected Listing of NASA Scientific and Technical Reports for 1966

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Total Pages : 2084 pages
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Book Synopsis A Selected Listing of NASA Scientific and Technical Reports for 1966 by : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division

Download or read book A Selected Listing of NASA Scientific and Technical Reports for 1966 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1967 with total page 2084 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Selected Listing of NASA Scientific and Technical Reports for ...

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Total Pages : 2088 pages
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Book Synopsis A Selected Listing of NASA Scientific and Technical Reports for ... by : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division

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Monthly Catalog of United States Government Publications

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Total Pages : 758 pages
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Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents

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Nuclear Science Abstracts

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Total Pages : 926 pages
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Reactor Materials

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Total Pages : 320 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Reactor Materials written by and published by . This book was released on 1967 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA SP.

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Total Pages : 1032 pages
Book Rating : 4.3/5 (91 download)

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Download or read book NASA SP. written by and published by . This book was released on 1962 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Government Reports Annual Index

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Total Pages : 446 pages
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Government-wide Index to Federal Research & Development Reports

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ISBN 13 :
Total Pages : 700 pages
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Download or read book Government-wide Index to Federal Research & Development Reports written by and published by . This book was released on 1966 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Index Aeronauticus

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Total Pages : 976 pages
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Cumulative Title Index to United States Public Documents, 1789-1976

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Total Pages : 816 pages
Book Rating : 4.:/5 (321 download)

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Book Synopsis Cumulative Title Index to United States Public Documents, 1789-1976 by : Daniel W. Lester

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Bibliography on the High Temperature Chemistry and Physics of Gases and Gas-condensed Phase Reactions

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Total Pages : 490 pages
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