Specific heat of silicon carbide
Silicon carbide is used in numerousindustrial applications. It is employedas a filter system in modern carexhaust systems and in the steel industry. It is used as a brake diskmaterial and as a heating element inhigh-temperature industrial furnaces.Presented here are the measurementresults of a solid silicon carbide blockmeasured up to 1200°C. It canclearly be seen that the increase in specific heat follows Debye’s lawvery well. At the highest temper- atures, the specific heat shows only a weak temperature dependence, ascan be derived from the rule of Dulong and Petit. Phosphate glass
Here, a fine-grained phosphate glasspowder was measured betweenroom temperature and 1100°C. As is typical for such glass types, the glasstransition was measured at 483°C(midpoint). At 632°C, an exothermaleffect was recorded. This effect ismost probably caused by structural changes in the material and/oragglomeration of the powderparticles above the softening point.The large surface area of thepowder is reduced, causing a slight energy release. The energy release issuperimposed onto the true specificheat values between 600°C and900°C. 9