Tribological properties of sliding pairs with surface layer containing boron under mixed friction conditions

• Autorzy: Lubas J.
• Języki publikacji: EN

Abstrakty

EN

The aim of the present work is to determine the influence of surface layers containing boron on the friction parameters in sliding pairs under mixed friction conditions. The tribological evaluation included three production methods of surface layers with boron; pack boronizing, laser boronizing, and TiB2 coating deposited on 46Cr2 steel. Modified surface layers of ring specimens with 46Cr2 steel were matched under test conditions with a counterpart made from AlSn20 bearing alloy. Tested sliding pairs were lubricated with 5W/40 Lotos synthetic engine oil. The applied modification technologies of the surface layer of steel allowed for obtaining construction materials with predetermined tribological characteristics required for the elements of sliding pairs working undermixed friction conditions. The results showed differences in the wear of bearing alloy, as the effect of the interaction between the cooperating surface layers and of the physiochemical changes of their surfaces, induced by external forces. The TiB2 coating generated the highest friction resistance and bearing alloy wear. The pack borided surface layer reduces the friction coefficient, the moment during the start-up of the frictional pair and the wear of the bearing material. The analysis of the surface layer indicated that the content of aluminum on pack borided ring specimens reached 21%, and on the TiB2 coating, it exceeded 8%.

Słowa kluczowe

EN

surface treatment; wear; sliding friction; boron; bearing alloy

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 1
• Strony: 185--192
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Lubas J.

• University of Rzeszow Institute of Technology Rejtana Street 16C, 35-959 Rzeszow, Poland tel.:[phone], fax: [phone]

Bibliografia

• [1] Taktak, S., Tribological Behaviour of Borided Bearing Steels at Elevated Temperatures, Surface and Coating Technology, Vol. 201, pp. 2230-2239, 2006.
• [2] Bejar, M. A., Moreno, E., Abrasive Wear Resistance of Boronized Carbon and Low-Alloy Steel, Journal of Materials Processing Technology, Vol. 173, pp. 352-358, 2006.
• [3] Duzcukoglu, H., Calik, A., Imrek, H., Karakas, M. S., Examination of Pitting and Wear in Borided, Carburized, and Borocarburized AISI 8620 Gears, Tribology Transations, Vol. 53, pp. 485-490, 2006.
• [4] Pranay, H., Liang, M., Usta, A. H., Wear and Surface Characterization of Boronized Pure Iron, Journal of Tribology, Vol. 129, pp. 1-10, 2007.
• [5] Atik, E. Yunker, U, Meric, C., The Effect of Conventional Heat Treatment and Boronizing on Abrasive Wear and Corrosion of SAE 1010, SAE 1040, D2 and 304 Steels, Tribolology International, Vol. 36, pp. 155-161, 2003.
• [6] Lubas, J., Practical Application of Boron-Modified Sliding Pairs in I.C. Engine, Tribolology International, Vol. 43, pp. 2046-2050, 2010.
• [7] Panish, N. Wangyao, P. Hannongbua, S. Sricharoenchai, P. Sun, Y., Tribological Study of Nano-Multilayer Ultra-Hard Coatings Based on TiB2, Reviews on Advanced Materials Science, Vol. 13, pp. 117-124, 2006.
• [8] Basu, B., Vleugels, J., Van Der Biest, O., Fretting Wear Behavior of TiB2-Based Materials Against bearing Steel Under Water and Oil Lubrication, Wear, Vol. 250, pp. 631-641, 2001.
• [9] Komvopoulos, K., Pernama, S. A., Ma, J., Yamaguchi, E. S., Ryason, P. R., Synergistic Effects of Boron-, Sulfur-, and Phosphorus-Containing Lubricants in Boundary Lubrication of Steel Surfaces, Tribolology Transations, Vol. 48, pp. 218-229, 2005.
• [10] Nehme, G., Mourhatch, R., Aswath, P. B., Effect of Contact Load and Lubricant Volume on the Properties of Tribofilms Formed Under Boundary Lubrication in a Fully Formulated Oil Under Extreme Load Conditions, Wear, Vol. 268, pp. 1129-1147, 2010.
• [11] Guha, D. Chowdhuri, R., The Effect of Surface Roughness on the Temperature at the Contact Between Sliding Bodies, Wear, Vol. 197, pp. 63-73, 1996.
• [12] Schouwenaars, R. Jacobo, V. H., Ortiz, A., Microstructure Aspect of Wear in Soft Tribological Alloys, Wear, Vol. 263, pp. 727-735, 2007.
• [13] Nehme, G., Mourhatch, R., Aswath, P. B., Effect of Contact Load and Lubricant Volume on the Properties of Tribofilms Formed Under Boundary Lubrication in a Fully Formulated Oil Under Extreme Load Conditions, Wear, Vol. 268, pp. 1129-1147, 2010.