Observation of Direct Bonds between Carbon and Nitrogen in Si-B-N-C Ceramic after Pyrolysis at 1400°C

摘要

In recent years,the effect of the addition of carbon to various nitridic ceramics has been investigated.The quaternary amorphous ceramic SiBNC shows exceptional properties,such as excellent thermal stability and high resistance towards oxidative attack,and they are promising candidates for industrial applications such as heat engines and turbines.The properties are superior to those of Si3B3N7,therefore carbon seems to have a special role in this material.