Volume 44, No 2, 2022, Pages 212-220

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Microstructure and Wear Resistance of Plasma Surface Layers Based of Alloy Mixture CuSn10/CrxCy

Authors:

Andrey Evgenievich Balanovskiy , Van Trieu
Nguyen , Natalia Anatolyevna Astafeva , Van Huy Vu

DOI: 10.24874/ti.1083.03.21.07

Received: 30 March 2021
Revised: 21 June 2021
Accepted: 22 July 2021
Published: 15 June 2022

Abstract:

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).

Keywords:

Microstructure, Wear resistance, Tin-bronze, OK 84.78, Microhardness, Chemical composition, Clad layer, Plasma heating