Book Description

An unsteady-state method for measuring thermal diffusivity at high temperatures was developed in which experimental heating curves are compared with the simplified solution of the heat conduction problem for various bodies. This method is based on a radiation boundary condition. The thermal diffusivity of refractory oxides measured by this method at 1400° C compares favorably with reported values. The apparatus used was a modification of standard laboratory equipment. Experimental procedures were simple and results were obtained rapidly.