INCREASING THE WEAR RESISTANCE OF ROLLING BEARINGS BY APPLYING A CHROMIUM NITRIDE COATING
https://doi.org/10.52676/1729-7885-2020-1-117-121
Abstract
To determine the effect of Cr2N coating on the performance of rolling bearings, this article has studied the tribological and corrosion characteristics of thin-film coatings obtained by the MF method. The tribological characteristics of coatings were studied using the “ball on disk” scheme before and after Cr2N coatings were applied. As the counterbody was used a ball of SchCh15 (without coating). Analysis of cross-sections of wear tracks after testing indicates that there is virtually no wear after coating. The coated sample has a coefficient of friction of 0.14 0.17, i.e. it does not exceed the value of the coefficient of friction (<0.2) required for materials in dry friction pairs. The method of potentiometry was used to determine the corrosion of steel SchCh15 before and after applying a thin-film coating Cr2N.Corrosion tests were performed on a potentiostat-galvanostat P150, in a 4% solution of nitric acid (HNO3). The test results showed that after applying the Cr2N coating, the corrosion rate was 0.191 cm/year, i.e. half as much as that of uncoated steel SchCh15.
About the Authors
Zh. B. Sagdoldina
Sarsen Amanzholov East Kazakhstan State University
Kazakhstan
Ust-Kamenogorsk
Kazakhstan
Ust-Kamenogorsk
G. B. Botabaeva
Sarsen Amanzholov East Kazakhstan State University
Kazakhstan
Ust-Kamenogorsk
Kazakhstan
Ust-Kamenogorsk
O. A. Stepanova
Shakarim State University of Semey
Kazakhstan
Semey
Kazakhstan
Semey
E. Zhanimkhan
Sarsen Amanzholov East Kazakhstan State University
Kazakhstan
Ust-Kamenogorsk
Kazakhstan
Ust-Kamenogorsk
References
1. Котов С.Ю., Беляев Г.Я. Влияние вакуумно-плазменного упрочнения элементов качения на долговечность подшипника //Наука и техника – 2014. – № 2. – С. 57–61.
2. Veprek S., Reiprich S. A concept for the design of novel superhard coatings // Thin Solid Films. – 1995. – V. 268. – P. 64–71.
3. Tallian T.E. On competing failure modes in rolling contact, ASLE Trans. 10 (1967) Р. 418–439.
4. Kato K., Adachi K. Wear mechanisms, in: B. Bhushan (Ed.), Mod. Tribol. Handb. Princ. Tribol, CRC Press Inc. 2001. – Р. 273– 300.
5. Savan A., Boving H.J., Fluehmann F., Hintermann H.E. Increased performance of bearings using TiC-coated balls, J. Phys. IV 03, 1993. – C. 943–948.
6. Kobayashi K., Miwa K., Takayanagi T., Ohnaka I., Formation of Ti-Al-ZrO2 Film on the Surface of Mechanical Alloying Ball // Journal of the Japan Society of Powder and Powder Metallurgy. – 1993. – V.40(10). – P.955–958.
7. Torosyan A.R., Tuck J.R., Korsunsky A.M., Barseghyan S.A., A New Mechanochemical Method for Metal Coating // Journal of Metastable and Nanocrystalline Materials. – 2002. – V.13. – P. 251–256.
8. Kalyan C., Mutyala H., Singh, R.D., Evans C., Doll G.L. Deposition, characterization, and performance of tribological coatings on spherical rolling elements // Surface & Coatings Technology. – 2015. – V. 284. – P. 302–309.
9. Ürgen M., Çakir A.F., The effect of heating on corrosion behavior of TiN- and CrN-coated steels, Surface and Coatings Technology Volume 96, Issues 2–3, 25 November 1997, P. 236–244.
Review
For citations:
Sagdoldina Zh.B., Botabaeva G.B., Stepanova O.A., Zhanimkhan E. INCREASING THE WEAR RESISTANCE OF ROLLING BEARINGS BY APPLYING A CHROMIUM NITRIDE COATING. NNC RK Bulletin. 2020;(1):117-121. (In Russ.) https://doi.org/10.52676/1729-7885-2020-1-117-121
Views:
295
Email this article 