Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722469313
Category :
Languages : en
Pages : 26
Book Description
Static oxidation kinetics of Ti14Al21Nb (wt pct) ingot alloy were studied in air over the temperature interval of 649 to 1093 C in a thermogravimetric apparatus. The oxidation products were characterized by x ray diffraction, electron microprobe analysis, energy dispersive x ray analysis, and Auger electron spectroscopy. Cross-sections of the oxidized samples were also examined using light and scanning electron microscopy. The oxidation rate was substantially lower than the conventional alloys of titanium, but the kinetics displayed a complex behavior involving two or more oxidation rates depending on the temperature and duration of exposure. The primary oxide formed was TiO2, but this oxide was doped with Nb. Small amounts of Al2O3 and TiN were also present in the scale. Diffusion of oxygen into the alloy was observed and the diffusivity seemed to be dependent on the microstructure of the metal. A model was presented to explain the oxidation behavior of the alloy in terms of the reduction in the oxygen diffusivity in the oxide caused by the modification of the defect structure of TiO2 by Nb ions. Sankaran, Sankara N. and Clark, Ronald K. and Unnam, Jalaiah and Wiedemann, Karl E. Langley Research Center RTOP 505-43-71-01...
Oxidation Characteristics of Ti-14Al-21Nb Ingot Alloy
Oxidation Characteristics of Ti-14Al-21Nb Alloy
Author: Sankara Narayan Sankaran
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 30
Book Description
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 30
Book Description
Oxidation Characteristics of Ti-14Al-21Nb Alloy
Author: Sankara Narayan Sankaran
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 28
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1036
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1036
Book Description
NASA Technical Paper
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 28
Book Description
NASA Technical Paper
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 350
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 350
Book Description
NASA Scientific and Technical Publications
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 178
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 178
Book Description
Materials Division Research and Technical Accomplishments for FY 1988 and Plans for FY 1989
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 130
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 130
Book Description
NASA Scientific and Technical Publications
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 180
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 180
Book Description
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1646
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1646
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.