NDLI: The oxidation and protection of gamma titanium aluminides

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The oxidation and protection of gamma titanium aluminides

Content Provider	NASA Technical Reports Server (NTRS)
Author	Brindley, William J. Locci, Ivan E. Smialek, James L. Brady, Michael P.
Copyright Year	1996
Description	The excellent density-specific properties of the gamma class of titanium aluminides make them attractive for intermediate-temperature (600-850 C) aerospace applications. The oxidation and embrittlement resistance of these alloys is superior to that of the alpha(sub 2) and orthorhombic classes of titanium aluminides. However, since gamma alloys form an intermixed Al2O3/TiO2 scale in air rather than the desired continuous Al2O3 scale, oxidation resistance is inadequate at the high end of this temperature range (i.e., greater than 750-800 C). For applications at such temperatures, an oxidation-resistant coating will be needed; however, a major drawback of the oxidation-resistant coatings currently available is severe degradation in fatigue life by the coating. A new class of oxidation-resistant coatings based in the Ti-Al-Cr system offers the potential for improved fatigue life.
File Size	647007
Page Count	6
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19970019705
Archival Resource Key	ark:/13960/t18m27p3t
Language	English
Publisher Date	1996-11-01
Access Restriction	Open
Subject Keyword	Nonmetallic Materials Scanning Electron Microscopy Fatigue Life Phase Diagrams Embrittlement Aluminum Alloys High Temperature Nitrogen Chromium Alloys Titanium Oxides Aluminides Titanium Alloys Oxidation Resistance Oxidation Protective Coatings Aluminum Oxides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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