Thermal expansion of pyrolytic graphite

  title={Thermal expansion of pyrolytic graphite},
  author={Miss F. Entwisle},
Thermal expansion coefficients over the ranges -- 196 to 20 deg C,20 to 120 deg C, and 100 to 700 deg C have been measured for specimens of pyrolytic graphite. The curves of fractional change in length against temperature and corresponding expansion coefficients ( alpha /sub 1/) at 50 deg C intervais for the range 20 to 700 deg C in both the a and c single crystal directions are shown. These curves are compared with the dimensional changes observed by Nelson and Riley on single crystals and… CONTINUE READING