HEAT-RESISTANCE OF FE-C-CU BORONIZING POWDER METALLUGICAL CONSTRUCTIONAL MATERIALS
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- TITLE: HEAT-RESISTANCE OF FE-C-CU BORONIZING POWDER METALLUGICAL CONSTRUCTIONAL MATERIALS
- ABSTRACT: One of the methods of saving raw materials is related to the introduction of chemical-thermal treatment methods into practice. These methods make it possible to change the phase composition on the surface of the details, which leads to a significant improvement in their surface properties while retaining a coarse core. At the same time, however, the behaviorof the formed diffusion layers in working under extreme conditions has not been sufficiently studied. Boride coatings are known to have high hardness and good wear resistance under normal operating conditions, but at present, their resistance to high operating temperatures is not well studied. In the presented study with the methods of the X-ray analysis is traceable behavior of boride coatings formed on powder- metallurgical samples of the Fe-C-Cu system with a density of 6,60g/cm3 after isothermal containment for 60min. at temperatures ranging from 700 to 1150°C. The results of X-ray analysis are presented in the form of diagrams in which the interference maxima of phases and their intensity are schematically shown.
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