Abstract
The article analyzes the structure and properties of the new composite antifriction materials based on the powder nickel alloy EI929 with solid lubricant CaF2 additives for exploitation at high temperature 650–700 °C and increased loads up to 5.0 MPa, in air. The article shows the mechanism of new materials’ structure formation after using the manufacturing hot isostatic-pressing technology with subsequent heat treatment. It was illustrated an influence of the developed manufacturing technology on mechanical and antifriction properties. Such technology is able to ensure the high and stable level of the functional properties. It was shown the dense friction films were formed on the contact surfaces during the tribological tests. Solid lubricant CaF2 promotes the antifriction films formation during the friction process and provides a self-lubricating mode for the high-temperature friction unit. Such films defend the contact surfaces against the intensive wear and stabilize a work of the friction unit.
Published Version
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