The Cyclic Oxidation Behavior of Ti2AlN and Ti2AlN/TiN Composites

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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)

Edited by:

Ran Chen and Wen-Pei Sung

Pages:

420-423

Citation:

M. Yan et al., "The Cyclic Oxidation Behavior of Ti2AlN and Ti2AlN/TiN Composites", Advanced Materials Research, Vols. 393-395, pp. 420-423, 2012

Online since:

November 2011

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$38.00

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