Berlin 2015 – wissenschaftliches Programm

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SYMM: Symposium Magic MAX Phases: Self-healing, Magnetism and the Next Best Graphene

SYMM 1: Magic MAX Phases: Self-healing, Magnetism and the next best Graphene

SYMM 1.3: Hauptvortrag

Donnerstag, 19. März 2015, 11:00–11:30, H 0105

Autonomous healing of crack damage in MAX phase ceramics — •Willem G. Sloof — Delft University of Technology, Department of Materials Science and Engineering, Delft, The Netherlands

MAX phase ceramics, atomically layered ternary carbides and nitrides, have a range of advantageous properties that make them attractive candidates for high temperature applications, where the material is exposed to thermal cycles, mechanical loading and oxidation. In some MAX phases crack damage generated during service can be healed autonomously and multiple times. The healing is due to the formation of a stable, well-adhering oxide with a high relative volume expansion and having mechanical properties close to those of the matrix. The MAX phases that exhibit autonomous healing will be identified. The sealing of cracks and recovery of strength will be presented.