Structuring of multiphase compacts in the SiC-carbon system. I. Structuring in green blanks

A study is made of the effect of particle dimensions of the initial carbon and silicon carbide powders oil the structure of compacts ill the SiC - car bon system. It is established that carbon call be distributed among the SiC grains by three different schemes: interstitial, substitutional, and displ acement. The factors which determine the carbon distribution scheme are the relative concentrations of the components ill the semifinished products an d the dimensions of the particles of the initial powders. Specimens in whic h carbon is distributed ill accordance with the interstitial scheme have th e best characteristics.