BERYLLIUMHALTIG KISELKARBIDPULVERKOMPOSITION OCH SETT ATT SINTRA DENNA

摘要

A method of sintering silicon carbide powders containing beryllium or a beryllium containing compound as a densification aid is disclosed. The sintering is carried out in an atmosphere containing beryllium at a partial pressure equal to or greater than the equilibrium vapour pressure of beryllium in the powder. The silicon carbide powder may include 0.5 to 5.0 percent by weight of excess carbon and also other sintering aids such as boron or a boron containing compound.