• A facile route for graded conversion of carbon fabric to silicon carbide fabric and its oxidation kinetics study in atmospheric high-temperature environment

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/041/04/0108

    • Keywords

       

      Carbides; vapour deposition; thermogravimetric analysis; surface properties.

    • Abstract

       

      Silicon carbide fabric converted from carbon fabric was prepared by a facile halide-activated pack cementation method. The XRD, SEM and EDS analyses confirm the formation of SiC fibres with graded conversion of carbon toSiC from surface to core of individual carbon fibres of carbon fabric. The graded conversion of carbon fibre to SiC was uniform and homogeneous throughout the fabric dimension. The thermokinetics of oxidation in atmospheric environmentwas studied by TGA analysis. The reaction kinetics and governing mechanism for oxidation of bare carbon fabric and silicon carbide fabric were calculated using Kissinger and Ozawa methods. It was observed that the activation energy forbare carbon fabric and silicon carbide fabric converted from carbon fabric are 62 and 174 kJ mol$^{−1}$, respectively. Further, it was observed that the silicon carbide fabric converted from carbon fabric follows the second-order surface reaction oxidation mechanism.

    • Author Affiliations

       

      JYOTI PRAKASH1 MANASI GADE2 BHASKAR PAUL3 KINSHUK DASGUPTA1

      1. Mechanical Metallurgy Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
      2. Department of Metallurgy and Materials Science, College of Engineering, Pune 411005, India
      3. Materials Processing and Corrosion Engineering Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
    • Dates

       
  • Bulletin of Materials Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.