Experimental study of boron nitride in a wide temperature interval

Abstract

In the present work thermal conductivity (λ), thermal diffusivity (a), heat capacity (cp ) and linear thermal expansion coefficient (LTEC, α) of boron nitride (BN) with hexagonal modification were studied in a wide temperature range of 298-1273...1474 K. The experiments were performed on the samples made from the same starting material with a density of 1.64 g/cm3 at room temperature. For all studied properties the approximation equations were obtained and the tables of recommended values were developed that can be used for various scientific and practical applications.