Cubic boron nitride crystalline powders for dielectric and high thermal conductive thick film layers

Abstract

The authors present the results of investigating the c-BN micropowders sized in region 2-10 ^m which were synthesized in high pressure/high temperature technique by themselves. The results of investigating the properties of the powders was carried with the use of SEM microscopy, Raman spectroscopy, X-ray analysis and grain size microscopic analysis, chemical analysis. The powders were applied to prepare thick film dielectric pastes of high thermal conductivity. The pastes were screen printed onto different substrates. The properties of the layers such as microstructure, porosity, dielectric constant, resistance, thermal conductivity, etc. will be discussed.