Abstract
This study is devoted to the fabrication technology of composite materials with specified properties prepared from iron-based powder materials. A procedure of the ultrasonic impregnation of the samples with infiltrative compositions at various concentrations, temperatures, and time is described. The characteristics of oil absorbability are given. The physicomechanical properties of impregnated samples compared with the samples fabricated using the traditional method are investigated. The fabricated materials have a decreased friction coefficient (by a factor of ∼1.25) and improved leak-tightness (the samples withstood a pressure of 25 atm for 1 min). Metallographic analysis shows pores of sintered samples being filled with impregnating suspensions. The efficiency of this technology for achieving the specified operational properties of the wares is substantiated.
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