Conclusions
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1.
Sintered copper-graphite materials have been produced containing additions of copper-clad graphite granules.
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2.
The addition of graphite in clad form to copper-graphite materials lowers their electrical resistivity and raises their compressive strength; the presence of more than 6% of clad graphite increase also the hardness and trnasverse rupture strength. Thus, the hardness, compressive strength, and transverse rupture strength of a material with 15 wt.% of clad graphite increase by 30, 80, and 100%, respectively, compared with a similar material containing bare graphite; at the same time, its electrical resistivity and coefficient of dry friction decrease by 60 and 27%, respectively.
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3.
Copper-graphite materials may be recommended as suitable materials for sliding contacts and lightly loaded sliding bearings.
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Literature cited
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Translated from Poroshkovaya Metallurgiya, No. 5 (101), pp. 70–75, May, 1971.
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Yas', D.S., Osvetimskii, L.A., Dyadenko, N.S. et al. Copper-graphite materials with copper-clad graphite granule additions. Powder Metall Met Ceram 10, 401–405 (1971). https://doi.org/10.1007/BF00793860
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DOI: https://doi.org/10.1007/BF00793860