Method for the production of a composite powder consisting of finely interspersed tungsten and copper, which powder can be directly pressed and sintered to provide products having density values exceeding 96% with respect to the theoretical one and high values for electrical and thermal conductivity, the method essentially comprising the reduction of a copper precursor in the presence of tungsten metal suspended in an organic liquid phase produced by one or a mixture of polyols. The reaction is carried out by heating the suspension to a temperature of at least 60 °C and keeping it at a such temperature for a sufficient time to bring about the reduction of the copper precursor by means of the organic phase and tungsten therein.

Gusmano, G., Bianco, A., Polini, R. (1999). Process for the production of tungsten-copper composite sinterable powders.

Process for the production of tungsten-copper composite sinterable powders

GUSMANO, GUALTIERO;BIANCO, ALESSANDRA;POLINI, RICCARDO
1999-10-12

Abstract

Method for the production of a composite powder consisting of finely interspersed tungsten and copper, which powder can be directly pressed and sintered to provide products having density values exceeding 96% with respect to the theoretical one and high values for electrical and thermal conductivity, the method essentially comprising the reduction of a copper precursor in the presence of tungsten metal suspended in an organic liquid phase produced by one or a mixture of polyols. The reaction is carried out by heating the suspension to a temperature of at least 60 °C and keeping it at a such temperature for a sufficient time to bring about the reduction of the copper precursor by means of the organic phase and tungsten therein.
CELSIA SpA
12-ott-1999
22-giu-2000
WO2000/035616
Settore CHIM/03 - CHIMICA GENERALE E INORGANICA
Settore ING-IND/22 - SCIENZA E TECNOLOGIA DEI MATERIALI
English
Tungsten-copper composite; powder metallurgy; heat sinks; electrical contacts
Gusmano, G; Bianco, A; Polini, R
Brevetti
Gusmano, G., Bianco, A., Polini, R. (1999). Process for the production of tungsten-copper composite sinterable powders.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/10990
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