METAL MATRIX COMPOSITE ESPECIALLY INTENDED FOR PISTON RINGS

摘要

The present invention relates to a metal matrix-composite material intended particularly for piston rings, said material being produced by mixing two different powder materials and transformation of said powders into an essentially compact material by means of a pressure and heat treatment, characterised in that one of said powders is a metal powder and the other one a ceramics powder, the finished transformed material at least partly comprising a network of the ceramics material throughout the metal matrix. The present invention likewise relates to a method of producing a material of the kind defined, and to a piston ring, particularly intended for diesel engines, which is manufactured from such a material.