Phase equilibria in the Si,Al,Be/C,N system

Abstract

Phase equilibria studies in parts of the system Si, Al, Be/C, N were carried out at 1760 and 1860°C. In the carbide system Al₄C₃SiCBe₂C seven new compounds were found and characterized by their chemical composition and crystal symmetry. In the nitride system AlNSi₂N₄Be₂N₂ a solid solution between AlN and BeSiN₂ was found to exist besides the already known compounds. The carbonitride system showed solid solution between α-Al₄SiC₄ and α-Al₅C₃N. Furthermore the compound AlN · SiC · Al₄C₃ was found to exist.