Abstract
There were investigated peculiarities of nano sized additions’ influence WC, ZrO 2 , as well as micrometric particles of hexagonal BN on compatibility un- der cold pressing of briquettes, shrinkage under solid-phase sintering, as well as on mechanical properties (bending strength, hardness) of powder alloys in the system Cu-Fe-Co-Ni. There was showed that introduction of alloy additives WC, ZrO 2 and hexagonal BN has negligible influence on resistance of charging material to packing under cold pressing, and under sintering these additives are additional diffusion barrier, increasing energy of activation. At the expense of realization of dispersion hardening effect in compact composite was reach increase of hardness up 7 HRB and strength up 200 MPa.
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Schedule a callMore From: Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya (Proceedings of Higher Schools. Powder Metallurgy аnd Functional Coatings)
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