Oxidation of Mo-41 Re at Low Oxygen Pressures: 2000 Status Report

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Description

Rhenium generally improves the properties of molybdenum, and, therefore, there is interest in use of Mo-Re alloys in space system applications. Both Mo and Re have relatively low solubilities for oxygen but readily form oxide scales when exposed to oxidizing environments above {approx}350 C. Studies are being conducted on Mo-41Re to determine the rate of oxidation, type of scale formation, and effects on mechanical properties as a function of temperature and partial pressure of oxygen. Thus far, weight gains associated with formation of MoO{sub 2} have been found for P{sub o{sub 2}} < 10{sup -3} Pa (torr) in vacuum, and ... continued below

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32 pages

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DiStefano, JR December 6, 2000.

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Description

Rhenium generally improves the properties of molybdenum, and, therefore, there is interest in use of Mo-Re alloys in space system applications. Both Mo and Re have relatively low solubilities for oxygen but readily form oxide scales when exposed to oxidizing environments above {approx}350 C. Studies are being conducted on Mo-41Re to determine the rate of oxidation, type of scale formation, and effects on mechanical properties as a function of temperature and partial pressure of oxygen. Thus far, weight gains associated with formation of MoO{sub 2} have been found for P{sub o{sub 2}} < 10{sup -3} Pa (torr) in vacuum, and weight losses associated with evaporation of MoO{sub 3} above 10{sup -3} Pa. However, no significant changes in tensile properties were measured.

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32 pages

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  • Other Information: PBD: 6 Dec 2000

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  • Report No.: ORNL/TM-2000/291
  • Grant Number: AC05-00OR22725
  • DOI: 10.2172/814084 | External Link
  • Office of Scientific & Technical Information Report Number: 814084
  • Archival Resource Key: ark:/67531/metadc733721

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

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  • December 6, 2000

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • March 31, 2016, 1:11 p.m.

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DiStefano, JR. Oxidation of Mo-41 Re at Low Oxygen Pressures: 2000 Status Report, report, December 6, 2000; United States. (digital.library.unt.edu/ark:/67531/metadc733721/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.