51. Oxidation Behavior of MAX Phase Ti2 Al(1− x) Sn x C Solid Solution.
- Author
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Bei, Guoping, Pedimonte, Birgit ‐ Joana, Fey, Tobias, Greil, Peter, and Zhou, Y.
- Subjects
ANNEALING of crystals ,ATMOSPHERE ,OXIDATION ,SINTERING ,POWDER metallurgy - Abstract
MAX phase Ti
2 Al(1− x) Snx C solid solution with x = 0, 0.32, 0.57, 0.82, and 1 was synthesized by pressureless sintering of uniaxially pressed Ti, Al, Sn, and TiC powder mixtures. Annealing in air atmosphere at 200°C-1000°C triggered a sequence of oxidation reactions which reveal a distinct influence of solid solution composition on the oxidation process. With decreasing Al/ Sn ratio, the characteristic temperature of accelerated oxidation reaction of A-element was reduced from 900°C ( x = 0) to 460°C ( x = 1). SnO2 was formed at temperatures significantly lower than TiO2 (rutile) and Al2 O3 . Substitution of A-element in MAX phase solid solution by low-melting elements such as Sn may offer potential for reducing oxidation-induced crack healing temperatures. [ABSTRACT FROM AUTHOR]- Published
- 2013
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