Elasticity and Inelasticity of Ceramic Samples of Graphitelike Boron Nitride

This paper reports a study of the effect of temperature and strain amplitude on Young’s modulus and ultrasonic damping in ceramic samples of graphitelike boron nitride prepared in the RF and USA by different technologies and using various additions to improve the mechanical properties of the ceramic. It is shown that, in addition to the influence on the effective elasticity modulus, additions improve the sample microplasticity, which apparently increases the strength of the material.