Sintered Wear-Resistant Boride Material, Sinterable Powder Mixture, for Producing Said Material, Method for Producing the Material and Use Thereof

摘要

The invention relates to a sintered wear-resistant material which is based on transition metal diborides and comprisesa) as main phase, 80-98.8% by weight of a fine-grained transition metal diboride or transition metal diboride mixed crystal comprising at least two transition metal diborides or mixtures of such diboride mixed crystals or mixtures of such diboride mixed crystals with one or more transition metal diborides, where the transition metals are selected from sub-groups IV to VI of the Periodic Table,b) as second phase, 0.2 to 5% by weight of a continuous, oxygen-containing grain boundary phase andc) as third phase, 1-15% by weight of particulate boron carbide and/or silicon carbide.;The invention further relates to a pulverulent sinterable mixture for producing such a sintered material, process for producing the sintered material, preferably by pressureless sintering, and also the use of the sintered material for producing wear parts in general mechanical engineering, in particular chemical plant construction.