Abstract
This study is dedicated to the development of the copper dispersion-strengthened composite material with increased indexes of heat - and wear - resistance for heavy duty friction pairs parts and, first of all, for valve guides of high-forced internal combustion engine and plunger of the die-casting machine. As a result of the research conducted, the material was obtained containing (% wt): aluminum − 2.90; carbon − 1.20; oxygen − 0.20; copper - the rest. The developed material has the recrystallization temperature of 1000 °C and exhibits higher tribotechnical properties compared to the standard materials, in particular, compared to bronze CuA19Fe3. The tests conducted revealed that the developed dispersion-strengthened copper-based material has recrystallization temperature almost two times higher than that of CuA19Fe3 bronze, and the wear out intensity is almost four orders of magnitude lower, which ultimately provides parts made of new material a significantly higher life-time compared to the parts life-time from standard bronze.
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