Sintered body for chip forming machining
AssigneeSantrade Ltd.
InventorsLeif A. E. Akesson, Marian Mikus
Life of this patent
Estimating the term…
Abstract
The present invention relates to a sintered body for chip forming machining containing at least one hard constituent comprising a carbide, nitride and/or carbonitride of a metal of group IVB, VB or VIB in the periodical system and a binder metal based upon Co, No and/or Fe, in which the body comprises a core containing eta-phase or an intermediate phase, substantially free of carbon and/or nitrogen surrounded by a hard constituent- and binder phase-containing surface zone, free of said eta-phase or intermediate phase.
Claims17
Sintered body for chip forming machining comprising at least one hard constituent comprising a carbide, nitride and/or carbonitride of a metal of group IVB, VB or VIB of the periodical system and a binder metal based on Co, Ni and/or Fe, said sintered body comprising (i) a core containing at least one of (a) eta-phase and (b) an intermediate phase being essentially free of carbon and/or nitrogen, said core being surrounded by (ii) a hard constituent-and binder phase - containing surface zone free of said eta-phase or said intermediate phase.
Dependencies are inferred from the claim text.