X-RAY INVESTIGATION ON Me-S1-B SYSTEMS (Me = Mn, Fe-Co) I. SOME FEATURES OF THE Co-S1-B SYSTEMS AT 1000℃.INTERMEDIATE PHASES IN THE CO-S1-B SYSTEMS

摘要

The crystal structure of the ternary phase Co4.7 Si2B (isomorphous with Fe4.7Si2B) has been established from single crystal data and is closely re¬lated to the W5Si3(T1) structure.nThe Fe-Si-B system contains several ternary phases, the most remarkable of which is a cementite (Fe3C) type phase, while the crystal structures of Fe5SiB2 and Mn5SiB2 are shown to be of the Cr5B3(T2) type.