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

DiStefano, J. R. ; Chitwood, L. D.

Technical Information Center Oak Ridge Tennessee

关键词: Molybdenum;    Oxidation;    Oxygen;   

RP-ID  :  DE2001769320

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

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 deg. 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 Po(sub 2) less than 10(sub 13) Pa (torr) in vacuum, and weight losses associated with evaporation of MoO(sub 3) above 10(sub -3) Pa. However, no significant changes in tensile properties were measured.