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<p>The oxidation behaviour of bulk (Ti<sub>1–<i>x</i></sub>, Mo<sub><i>x</i></sub>)<sub>2</sub>AlC phases has been investigated at 900–1200°C in air for exposure times up to 100 h, and the microstructure of oxide scales formed on (Ti<sub>0.9</sub>, Mo<sub>0.1</sub>)<sub>2</sub>AlC surface after oxidation at 900–1400°C is also studied. The results from this study reveal that (Ti<sub>0.9</sub>, Mo<sub>0.1</sub>)<sub>2</sub>AlC has the greatest oxidation resistance among all samples and its oxidation kinetics follows the cubic rate law at 900–1200°C. The Mo exists in large amounts in (Ti<sub>0.9</sub>, Mo<sub>0.1</sub>)<sub>2</sub>AlC substrate in the range of 900–1400°C oxidation temperature, this might be caused by the bonding between Mo and C, which is stronger than the Ti-C bond, whereas the weak bonding between Mo and Al might have led to a small amount of Mo diffuse into the oxide scale.</p>

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Oxidation characteristics of (Ti1–x, Mox)2AlC phases in air

  • 期刊论文

  • 发表日期：

    2026年2月10日

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  • R J Pan,
  • Y M Liu,
  • Q Gao,
  • H M Jia,
  • J F Zhu

摘要

The oxidation behaviour of bulk (Ti1–x, Mox)2AlC phases has been investigated at 900–1200°C in air for exposure times up to 100 h, and the microstructure of oxide scales formed on (Ti0.9, Mo0.1)2AlC surface after oxidation at 900–1400°C is also studied. The results from this study reveal that (Ti0.9, Mo0.1)2AlC has the greatest oxidation resistance among all samples and its oxidation kinetics follows the cubic rate law at 900–1200°C. The Mo exists in large amounts in (Ti0.9, Mo0.1)2AlC substrate in the range of 900–1400°C oxidation temperature, this might be caused by the bonding between Mo and C, which is stronger than the Ti-C bond, whereas the weak bonding between Mo and Al might have led to a small amount of Mo diffuse into the oxide scale.