Abstract
New antifriction alloys, synthesized from mixtures of iron and cast iron powders, have been developed. A special cast iron, with interdendritic point graphite inclusions, whose initial forms and sizes remain the same after sintering while being distributed among the grains, is used to create the composite materials. Starting at sintering temperatures of 800°C a pearlitic ferrite or pearlite structure forms with initial graphite inclusions that prevent formation of structure-free cementite. A composite antifriction material with a low friction coefficient can be obtained by optimizing the process parameters and charge composition as well as the microstructure of the alloys.
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