Process for the fabrication of a material for electric contact composite

摘要

The fibre manufacturing method involves pulverisation which significantly reduces the length of the fibres from between 100 and 800 micrometres to residues less than about a single mode value of 20 micrometres with a standard deviation greater than that of the original fibres. Pulverisation occurs prior to mixing or at the same time by mechanical synthesis. The composite is a metal matrix with homogeneously distributed carbon fibres of a pulverised semi-crystalline structure. The fibre has a diameter between 4 and 20 micrometres and forms 2-5% by weight of the mixture. Nickel, tungsten, titanium nitride and tungsten carbide may be part of the matrix.