Oxidation Behavior of MAX Phase Ti2Al(1−x)SnxC Solid Solution. Issue 5 (19th April 2013)

• Record Type: Journal Article
• Authors: Bei, Guoping; Pedimonte, Birgit‐Joana; Fey, Tobias; Greil, Peter; Zhou, Y.
• Is Part Of: Journal of the American Ceramic Society. Volume 96:Issue 5(2013)
• Page Start: 1359
• Page End: 1362
• Publication Date: 2013-04-19
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.12358
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" xml:lang="en" id="jace12358-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>MAX phase Ti₂Al_{(1−<italic>x</italic>)}Sn_{<italic>x</italic>}C solid solution with <italic>x </italic>= 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 (<italic>x </italic>= 0) to 460°C (<italic>x </italic>= 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.</p> </abstract>