Abstract
The kinetics of graphitization has been studied using structure parameters d 002, L c and L a derived from wide angle X-ray diffraction measurements. For Glassy Carbon (GX) isochronally (2 hr each) heat treated in the temperature range 1000–2800°C, the behavior of these parameters can be studied in three separate regions: 1. (1) For heat treatment temperature (HTT) < 1500°C GC undergoes dehydrogenation 2. (2) For 1500° < HTT < 2300°C the main process is stress relief 3. (3) For HIT > 2300°C graphitization takes place. The activation energy for graphitization in the third region has been determined to be 215 ∓ kcal/mole using the “superposition technique”.
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