ALUMINIUM-BASED POWDER COMPOSITE MIXTURE AND METHOD FOR THE PRODUCTION THEREOF

摘要

The invention relates to powder metallurgy. The inventive aluminium-based powder composite mixture comprises components with the following component ratio: 41-43 mass % silicon, 4,1-5.2 mass % nickel, 0.05-0.1 mass % phosphorus and 0.01-0.05 mass % aluminium nitride, the rest being aluminium. The inventive method for producing said powder composite mixture consists in preparing a melt containing aluminium, silicon and nickel and, subsequently, in pulverising said melt by nitrogen at a temperature and pressure which enable the aluminium nitride to be formed. Said invention makes it possible to obtain a construction material which exhibits a high operating performance, a high operational reliability for a long service life, is non-toxic and inexpensive. The thus obtainable material can be used for accurate engineering products, in particular for aircraft instruments.