Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1696321 | Applied Clay Science | 2008 | 7 Pages |
Values of some thermal properties and the crystalline phases of red ceramic samples from the Northern region of Rio de Janeiro state in Brazil are reported as a function of firing temperature (900, 950, 980, 1020, 1060 and 1100 °C). The open photoacoustic cell (OPC) technique and a continuous light illumination photothermal method were employed in order to obtain the thermophysical characteristics: thermal diffusivity (α) and specific heat capacity (ρc), respectively. Indirectly, using simple mathematical relations, the thermal conductivity (k) and the thermal effusivity (ε) were obtained. Crystalline phases were identified by X-ray diffraction (XRD). The intrinsic relationship between the structure and the thermal diffusivity was analysed.