Dilatometry and Thermal Conductivity Analysis for Ceramics Applications

Dilatometry is a powerful tool which can accurately obtain a variety of information on thermal processes within a ceramic material: Most commonly, researchers are interested in obtaining the linear coefficient of thermal expansion (often abbreviated LCTE or represented by αL), which is obtained by measuring the relative change in length as a function of the change in temperature. Other items of interest to researchers include the glass transition temperature (Tg) in amorphous or semi-crystalline materials such as polymers, which represents the transition between a rigid and brittle glassy state to a softer and more malleable rubber-like state. The dilatometric softening temperature (Td) is another measurement important to researchers interested in amorphous or semi-crystalline materials and is easily observed via dilatometry.  Finally, phase changes between one crystalline phase to another or of melting may be observed using dilatometry.
Thermal conductivity is also of significant interest to ceramics researchers: In electronics applications where alumina-based ceramics are sometimes used as dielectric materials or tunnelling barriers for semiconductors, a relatively high thermal conductivity may be needed. However, in construction and insulation applications, a low thermal conductivity is preferred. A large volume of research has been produced in the past year on producing thermally insulative ceramics for a variety of applications.
In this webinar, we talk about dilatometry and thermal conductivity as applied to ceramics research. We highlight some of the work that has been published in the past year about thermal conductivity of ceramic materials and also discuss how C-Therm’s dilatometry module (DiL) may be used in the analysis of ceramics.
This webinar will be of particular interest to ceramics and materials science researchers.


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