Abrasive wear-resistance of composite materials and coatings on titanium-chromium diboride based.
Abstract
Konoval V. P. Abrasive wear-resistance of composite materials and coatings on titanium-chromium diboride based. Composites of TiCrB2–(NiAlCr) systems with different ratio of refractory and metal phase have been produced by sintering. The coatings on the base of TiCrB2–(NiAlCr) composites were electrospark method deposited on 65G steel. The structure, mechanical and tribotechnical properties of the composites and coatings have been studied. The obtained composites have heterophase fine structure with uniform phase distribution, high hardness (HV11–23 GPa) and wear-resistance under abrasive wear conditions. It was determined that wear-resistance of coatings is 30 to 60 % lower than of the initial compact material. It is due to that the coatings have been lower hardness (HV9–17 GPa). This results from the formation of ultrafine coating microstructure and partial mixing of the coating and substrate materials. The wear resistance of the composites and coatings improves with a higher amount of the refractory phase in their composition. In general, the wear rates are quite low and testify that composite materials and electrospark-deposited coatings which consist over 50 % of refractory phase are suitable for the operating under abrasive wear conditions at loads up to 2 MPa.References
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5. V.P. Konoval, O.P. Umanskii, A.D. Panasyuk, O.F. Lukyanchuk. Effect of the chemical composition of electrode materials and deposition parameters on the properties of electrospark-deposited coatings. I. Mass transfer rate and coating composition, Powder Metallurgy and Metal Ceramics, 2014, Vol.53, No.1–2, P.31–39.
6. V.P. Konoval, O.P. Umanskii, O.D. Kostenko, I.S. Martsenyuk. Effect of the chemical composition of electrode materials and deposition parameters on the properties of electrospark-deposited coatings. II. Coating hardness and wear resistance, Powder Metallurgy and Metal Ceramics, 2014, Vol.53, No.3–4, рр.210–218.
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8. Kaschev V.N. Abrazivnoe razrushenie tverdykh tel. Nauka, 1970. 246 р.
9. Khruschov M.M. Principles of abrasive wear, Wear, 1974, Vol.28, рр.69–88.
2. G.K. Kozina, I.G. Prikhno, I.Ya. Dzykovich, S.A. Artemyuk. Napolnitel’ kompozitsionnogo napla-vochnogo iznosostoyikogo materiala na osnove diborida titana-khroma, Sverkhtverdye materialy, 1996, No. 3, рр. 14–21.
3. T.M. Evtushok, O.N. Grigor’ev, A.D. Kostenko, et al. Tribological properties of composite materials based on refractory titanium compounds, Powder Metallurgy and Metal Ceramics, 2005, Vol.44, No.7–8, –рр.353–357.
4. V.P. Konoval, O.P. Umanskii, A.D. Panasyuk, et al. Formation of electric-spark coatings from com-posite materials based on titanium-chromium carbide and diboride, Journal of Superhard Materials, 2009, Vol.31, No.4, рр.274–280.
5. V.P. Konoval, O.P. Umanskii, A.D. Panasyuk, O.F. Lukyanchuk. Effect of the chemical composition of electrode materials and deposition parameters on the properties of electrospark-deposited coatings. I. Mass transfer rate and coating composition, Powder Metallurgy and Metal Ceramics, 2014, Vol.53, No.1–2, P.31–39.
6. V.P. Konoval, O.P. Umanskii, O.D. Kostenko, I.S. Martsenyuk. Effect of the chemical composition of electrode materials and deposition parameters on the properties of electrospark-deposited coatings. II. Coating hardness and wear resistance, Powder Metallurgy and Metal Ceramics, 2014, Vol.53, No.3–4, рр.210–218.
7. Linmin Wu, Xingye Guo, Jing Zhang. Abrasive Resistant Coatings – A Review, Lubricants, 2014, Vol.2, рр.66–89.
8. Kaschev V.N. Abrazivnoe razrushenie tverdykh tel. Nauka, 1970. 246 р.
9. Khruschov M.M. Principles of abrasive wear, Wear, 1974, Vol.28, рр.69–88.
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Published
2015-06-28
How to Cite
Коновал, В. (2015). Abrasive wear-resistance of composite materials and coatings on titanium-chromium diboride based. Problems of Tribology, 75(1), 25–30. Retrieved from https://tribology.khnu.km.ua/index.php/ProbTrib/article/view/441
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