Long Term Cyclic Oxidation Behavior Of Uncoated And Coated Re 108 And In 939 At 980 And 870 C
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Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 34 |
Release | : 2018-06-15 |
Genre | : |
ISBN | : 9781721183449 |
Very long-term cyclic oxidation behavior of Re-108 and ln-939 with and without a protective coating was evaluated at 980 and 870 C, respectively. Re-108 and ln-939 without a protective coating began to show rapid weight loss at 3000 h due to scale spallation, indicating the need for an oxidation protective coating for longer than thousands of hours of oxidative life. NiAl-base coatings of a vapor phase aluminide (VPA), a pack aluminide (CODEP), and a slurry paint aluminide (SERMALOY J) were applied on Re-108 and ln-939. VPA and CODEP on Re-108 and all three coatings on ln-939 showed excellent cyclic oxidation resistance out to 10000 hr. Coated alloys were annealed in an inert atmosphere to determine the loss of Al from the coating into the alloy substrate through diffusion. The Al loss from the coating through diffusion was twice as great as the Al loss through oxidation after 10000 h of cyclic exposure. Oxidation life of VPA-coated Re-108 was estimated by calculating the amount of Al initially available for protective oxidation and the amount of Al lost through oxidation and diffusion. Lee, K. N. and Barrett, C. A. and Smith, J. Glenn Research Center NASA/TM-1999-209072, E-11630, NAS 1.15:209072
Author | : K. N. Lee |
Publisher | : |
Total Pages | : 24 |
Release | : 1999 |
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Release | : 1999 |
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Total Pages | : 658 |
Release | : 2000 |
Genre | : Government publications |
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Total Pages | : 34 |
Release | : 2003 |
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Author | : Roger C. Reed |
Publisher | : Cambridge University Press |
Total Pages | : 363 |
Release | : 2008-07-31 |
Genre | : Technology & Engineering |
ISBN | : 1139458639 |
Superalloys are unique high-temperature materials used in gas turbine engines, which display excellent resistance to mechanical and chemical degradation. This book introduces the metallurgical principles which have guided their development. Suitable for graduate students and researchers, it includes exercises and additional resources at www.cambridge.org/9780521859042.
Author | : |
Publisher | : |
Total Pages | : 1846 |
Release | : 2001 |
Genre | : Chemistry |
ISBN | : |
Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
Author | : Ramaswamy Viswanathan |
Publisher | : ASM International |
Total Pages | : 497 |
Release | : 1989 |
Genre | : Science |
ISBN | : 9780871703583 |
Author | : Joseph R. Davis |
Publisher | : ASM International |
Total Pages | : 450 |
Release | : 2000-01-01 |
Genre | : Technology & Engineering |
ISBN | : 0871706857 |
This book is a comprehensive guide to the compositions, properties, processing, performance, and applications of nickel, cobalt, and their alloys. It includes all of the essential information contained in the ASM Handbook series, as well as new or updated coverage in many areas in the nickel, cobalt, and related industries.
Author | : Peter Koch |
Publisher | : |
Total Pages | : 944 |
Release | : 1972 |
Genre | : Forest products |
ISBN | : |