Summary
The main methods by which the load carrying capacity of ferrous antifriction materials may be raised are to increase the strength of their metallic matrix by suitable alloying and to decrease their coefficient of friction by the addition of various sulfides. Researches in this field have led to the formulation of a new class of sulfidized ferrous materials. The investigation has shown that, if the load carrying capacity of a material is to be increased, the latter must contain structurally free graphite and sulfides, which secure the formation of stable working films with a low coefficient of friction. The best antifriction properties for the type of material investigated are ensured by a pearlitic-ferritic structure with a pearlite content of not more than 50%.
The highest antifriction properties are exhibited by iron-graphite base materials containing 4% zinc sulfide with additions of 1% tin and 1% elemental sulfur.
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I. M. Fedorchenko, N. A. Filatova, and V. V. Pushkarev, Fiz.-Khim. Mechan. Mater., No. 5, 567(1965).
L. I. Pugina, “Sulfidizing of alloyed iron-graphite material,” Transactions of a Conference on Powder Metallurgy, 2, Krakow (1963), p. 75.
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Translated from Poroshkovaya Metallurgiya, No. 8(56), pp. 39–45, August, 1967.
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Fedorchenko, I.M., Pugina, L.I., Pushkarev, V.V. et al. Sintered ferrous antifriction materials for arduous operating conditions. Powder Metall Met Ceram 6, 630–634 (1967). https://doi.org/10.1007/BF00774549
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DOI: https://doi.org/10.1007/BF00774549