This paper presents a study of the characteristics and resistance to abrasive wear of surface alloyed layers during plasma heating of powder pre-coating of a mixture containing tin bronze and chromium carbide. It has been established that, depending on the composition of the mixture, the thickness of the coating, the processing mode, the resulting layers differ in structure, chemical and phase composition. The addition of chromium carbide with a mass fraction of 20% makes it possible to increase the microhardness of the alloyed layer based on tin bronze up to 700 HV with the formation of a martensitic structure. Tests for abrasive wear were carried out at a load of 5, 20, 50 N and with codirectional rotation of the holder to the abrasive wheel. The obtained results showed that the wear resistance of the Fe-Cu-Sn and Fe-Cr-C-Cu-Sn alloyed layers is higher compared to the Cu-Sn layer. In particular, the Fe-Cr-C-Cu-Sn layer is the best.

The article relates to the study of the microstructure and wear resistance of the surface layers obtained by plasma heating of the powder-clad layer of the CuSn10 alloy and the coating of the OK 84.78 welding electrode. Microstructure studies, hardness measurements and wear tests have shown that coatings based on a tin-bronze alloy and with the addition of OK 84.78 are successfully obtained. Coating from CuSn10 + 20% alloy mixture OK 84.78 has a hardness of about 500-700 HV, and from CuSn10 alloy it is about 310-564 HV. Meanwhile, the wear resistance also increases in series: Steel St3 < coating (CuSn) < coating (CuSn + 20% OK 84.78).