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      https://www.ias.ac.in/article/fulltext/boms/032/05/0549-0554

    • Keywords

       

      Ti3SiC2; isothermal oxidation; cyclic oxidation; oxidation kinetics.

    • Abstract

       

      The oxidation behaviours of bulk Ti3Si(1–𝑥)Al𝑥C2 prepared by hot pressing were investigated. The results showed that the isothermal oxidation behaviour of Ti3SiC2 obeyed a parabolic law between 900 and 1100°C, and followed a two-step parabolic rate law between 1200°C and 1300°C. The cyclic oxidation behaviour of material is assumed to obey a three-step parabolic rate law at 1100°C and 1200°C. The calculated activation energy of isothermal oxidation is 101.43 kJ.mol-1. The oxide layers consisted of a mass of 𝛼-Al2O3 and little TiO2 and SiO2 are observed on Ti3SiC2 as a dense and adhesive protect scale. The oxidation mechanism varies with the additive aluminum that greatly improves the oxidation resistance of Ti3SiC2.

    • Author Affiliations

       

      Liu Xiaopan1 2 Wan Long1 Bu Zhongheng1 Nie Daojun1

      1. Material Science and Technology College, Hunan University, Changsha 410082, P.R. China
      2. The Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan 411105, P.R. China
    • Dates

       
  • Bulletin of Materials Science | News

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