The Cyclic Oxidation Behavior of Ti2AlN and Ti2AlN/TiN Composites

Ming Yan; Yan Lin Chen; Ying Chang; Jiu Xin Jiang

doi:10.4028/www.scientific.net/AMR.393-395.420

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 393-395The Cyclic Oxidation Behavior of Ti2AlN and...

The Cyclic Oxidation Behavior of Ti₂AlN and Ti₂AlN/TiN Composites

Abstract:

The cyclic oxidation behavior of Ti2AlN and Ti2AlN/TiN composites were investigated at 800°C, 900°C and 1000°C. The phase composition, thickness of oxidation layer and element content of samples were investigated by XRD and SEM coupled with EDS. The cyclic oxidation behaviors generally follow a parabolic rate law, with good thermal shock resistance. The antioxidation property of Ti2AlN/TiN composite is better than Ti2AlN. Oxidation process of single-phase Ti2AlN is composed by the outward diffusion of Al3+ and Ti4+, and inward diffusion of oxygen. Oxidation process of Ti2AlN/TiN composite consists of two parts: firstly, the oxidation of TiN, the oxidation temperature is 500°C; the second step is the oxidation of Ti2AlN, carried out in the 800-1000 °C.

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Periodical:

Advanced Materials Research (Volumes 393-395)

Pages:

420-423

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.393-395.420

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Online since:

November 2011

Authors:

Ming Yan, Yan Lin Chen, Ying Chang, Jiu Xin Jiang

Keywords:

Antioxidation Property, Cyclic Oxidation Behavior, Ti₂AlN, Ti₂AlN/TiN Composite

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