Effect of Mo on the Oxidation Behavior of NiTiAl Alloy

Jian Xu; Xin Qing Zhao; Sheng Kai Gong

doi:10.4028/www.scientific.net/MSF.546-549.1481

Paper Titles

Study of Hot Deformation Characteristics of an As-Cast Ti-22Al-25Nb Alloy
p.1461

NiCr-CrAl Coating for Ni₃Al Base Alloy IC6AE
p.1467

A First Principle Study of the Effect of Nb on the Oxidation Behavior of NiTi Alloy
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Effects of Nb on the High Temperature Mechanical Properties of TiNiAl Alloys
p.1477

Effect of Mo on the Oxidation Behavior of NiTiAl Alloy
p.1481

Effects of Cr and Al on High Temperature Oxidation Resistance of Nb-Si System Intermetallics
p.1485

Effect of B on the Microstructures and High Temperature Oxidation Resistance of a Nb-Si System In Situ Composite
p.1489

Study on Interface Reactions between Nb-Si System In Situ Composite and Ceramics
p.1495

Preparation and Mechanical Properties of C/C-SiC Composites
p.1501

HomeMaterials Science ForumMaterials Science Forum Vols. 546-549Effect of Mo on the Oxidation Behavior of NiTiAl...

Effect of Mo on the Oxidation Behavior of NiTiAl Alloy

Abstract:

The effect of Mo on the oxidation behavior of TiNiAl at 1073K has been investigated. It is found that 1at.% Mo addition can increase the diffusion of Al in the alloys and promote the formation of dense and continuous Al-rich oxide layer. Therefore the oxygen diffusion can be effectively impeded and the oxidation behavior of TiNiAl is improved. The observation of the cross-sectional oxidation layer showed that beneath the top oxide scale a Mo-rich oxide layer formed. Because the oxide of Mo is volatile at high temperature, voids formed in the oxide scales during the oxidation process. 3at.% Mo addition could cause cracks between the oxide scale and the substrate, resulting in poor adhesion of the oxide scale to the substrate.

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Periodical:

Materials Science Forum (Volumes 546-549)

Pages:

1481-1484

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.546-549.1481

Citation:

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Online since:

May 2007

Authors:

Jian Xu, Xin Qing Zhao, Sheng Kai Gong

Keywords:

Molybdenum, Oxidation, TiNiAl Alloy

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