Composite material reinforced copper-based intermetallic compound and a method for its preparation

摘要

the invention relates to copper based composite material, meanwhile, the miu0119dzymetalicznym for components requiring elevated mechanical properties, good thermal conductivity and electrical resistance to oxidation and which is constituted of miu0119dzyme talicznej phase which enhances, in the form of a compound of formula alxcry supplied,in which the atomic ratio of aluminium (al) and chromium (cr) is stechiometrii connection al9cr4, infiltrowanej at least 1100u00b0c warp and with metallic copper.composite material, formed by reactive infiltration in the form of quasi eutektycznej mixture contains from 45 to 55% by volume per volume of the composition, compounds that enhance the model crxalycu100 - x - y in which the coefficients have value: x = 48 u00f755 and y = 33u00f738, distributed in 45 to 55% by volume warp model craalbcu100 - and - bwhere: a = b = 12u00f720 and 21u00f741.the subject of the invention is also a process for the production of composite material, which consists of reactive infiltration pure copper (cu) porous preforms with intermetallic compounds presented the model al9cr4, produced high temperature synthesis method samorozwijaju0105cej (s hs), which is subjected to reactive infiltration liquid copper (cu) under a pressure of from 10 to 100 mpa.at a temperature of 1100 - 1200u00b0c, in an atmosphere of gas inertnego.according to the result of the gradual transformation during infiltration in the preforms, relationship al9cr4 into al8cr5 (cu), and the next is decay significantly less rounded tampered with phase particle reinforcing, the model crxalycu100 - x - y in which wspu00f3u0142cz ynniki have value: x = y = 48u00f755 and 33u00f738, submerged in the warp, the presented model craalbcu100 - and - bin which the coefficients have a value: a = b = 12u00f720 and 21u00f741.