Effect of texture on oxidation resistance of Ti3AlC2

Ludi Xu, Degui Zhu, Yunlong Liu, Tohru Suzuki, Byung nam Kim, Yoshio Sakka, Salvatore Grasso, Chunfeng Hu

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Oxidation resistance of textured Ti3AlC2 ceramics was measured in the temperature range 1273–1573 K. It was found that the oxidation was markedly anisotropic and the samples exhibited a better oxidation resistance when tested along a direction transverse to the c-axis. This behavior was attributed to the rapid diffusion of Al within its basal planes to form a passivating Al2O3 scale and it respected Ellingham diagrams. The scales formed had different compositions depending on the testing direction; this response was clearly resulting from the crystallographic orientation. Even at 1473 K after 20 h exposure, the samples tested in a direction transverse to the c-axis showed a reduced weight gain which was 45 times lower than one seen on a basal plane.

Original languageEnglish
Pages (from-to)3417-3423
Number of pages7
JournalJournal of the European Ceramic Society
Volume38
Issue number10
DOIs
Publication statusPublished - 2018 Aug 1
Externally publishedYes

Keywords

  • Oxidation behavior
  • Oxidation mechanisms
  • Texture microstructure
  • TiAlC

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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