• Wan Long

      Articles written in Bulletin of Materials Science

    • High-temperature oxidation behaviour of Ti3Si(1–𝑥)Al𝑥C2 in air

      Liu Xiaopan Wan Long Bu Zhongheng Nie Daojun

      More Details Abstract Fulltext PDF

      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.

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