期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 96, 期 5, 页码 1359-1362出版社
WILEY-BLACKWELL
DOI: 10.1111/jace.12358
关键词
-
资金
- DFG [GR 961/32]
MAX phase Ti2Al(1x)SnxC 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 degrees C1000 degrees 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 degrees C (x=0) to 460 degrees C (x=1). SnO2 was formed at temperatures significantly lower than TiO2 (rutile) and Al2O3. 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.
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