Issues »  Volume 41, Issue 3

Contact Resistance and Durability of Boride Coats at Rolling Friction

S. M. Cherneha$^{1}$, P. V. Kaplun$^{2}$, V. A. Honchar$^{2}$

$^{1}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
$^{2}$Khmelnytskyi National University, 11 Instytutska Str., UA-29016 Khmelnytskyi, Ukraine

Received: 03.09.2018. Download: PDF

The article represents the results of the study of contact resistance and durability of boride coatings that are applied to 40Kh and ShKh15 steels with the use of the method of chemical-thermal processing of boron-containing powders with copper adding under the influence of external magnetic field. Kinetics and mechanism of wear of boride coatings are studied in I-20 lubricant under the pressure of 1860 MPa in the contact area during the process of rolling friction with linear contact. Endurance of samples with boride coatings on these steels at rolling friction before pitting starts under the given test conditions is defined. As determined, the contact resistance of ShKh15 and 40Kh steels with boride coating with copper is 8.6 and 13.7 times more than corresponding values for these steels without coating.

Key words: microhardness, durability, crack growth resistance, diffusion, boriding, boride and copper coating.

URL: http://mfint.imp.kiev.ua/en/abstract/v41/i03/0337.html

DOI: https://doi.org/10.15407/mfint.41.03.0337

PACS: 62.20.Qp, 68.35.Gy, 68.55.J-, 68.55.Ln, 81.40.Pq, 81.65.Kn

Citation: S. M. Cherneha, P. V. Kaplun, and V. A. Honchar, Contact Resistance and Durability of Boride Coats at Rolling Friction, Metallofiz. Noveishie Tekhnol., 41, No. 3: 337—247 (2019) (in Ukrainian)

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