1970 Volume 7 Issue 6 Pages 312-316
Several problems encountered in the measurement of heat capacity at high temperatures by the laser flash method are discussed with the view to improving the accuracy of the measure-ments. The samples were disks of sintered alumina. The heat capacity measurement was carried out at temperatures ranging from 25°C to 700°C. The energy of the laser beam was determined with the use of a silicon photoelectric cell and a standard sample of pure iron. The experimental results are compared with the NBS standard data for alumina. Agreement is seen within experimental error, estimated to be ±1.5 %.
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