Tribological characteristics of the surface layer of steel modified with 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 technologically produced boron surface layers on the friction parameters in the sliding pairs under mixed friction conditions. The current boronizing processes allow obtaining surface layers of high hardness and high resistance to corrosion and wear, with low brittleness and no tendencies towards cracking However, the operation characteristics of these layers depend on the chemical composition, the structure of the surface layer, the method and parameters of their production, as well as any possible thermal treatment. The tribological evaluation included ion nitriding, powder-pack boronizing, laser boronizing, hardening and tempering surface layers and TiB2 coating deposited on ring samples. The ring samples were made from 38CrAlMo5-10, 46Cr2 and 30MnB4 steel. Modified surface layers of ring samples were matched under test conditions with counter-sample made from AlSn20 bearing alloy. Tested sliding pairs were lubricated 15W/40 Lotos mineral engine oil. The tribological tests were conducted on a T-05 block on ring tester. The applied steel surface layer modification with boron allow creating surface layers with pre-determined tribological characteristics required for the elements of kinematic sliding pairs operating under mixed friction conditions. Boronizing reduces the friction coefficient during the start-up of the frictional pair and the maximum start-up resistance level is similar to the levels of pairs with ion nitride surface layers.

Słowa kluczowe

EN

tribology; surface modification; boron surface layers; AlSn20 bearing alloy; friction coefficient

• 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: 2011
• Tom: Vol. 18, No. 2
• Strony: 271--278
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Lubas J.

• Rzeszow University, Institute of Technology Rejtana Street 16A, 35-959 Rzeszow, Poland phone: [phone],

Bibliografia

• [1] Sen, U., Sen, S., Yilmaz, F., Structural characterizations of boride layer on boronized ductile irons, Surf. Coat. Technol. 176, 223-228, 2000.
• [2] Kulka, M., Pertek, A., The importance of carbon content beneath iron borides after boriding of chromium and nickel-based low carbon steel, Applied Surf. Sci. 214, 161-171, 2003.
• [3] Sen, U., Sen, S., Yilmaz, F, The fracture toughness of borides formed on boronized cold work tool steel, Mater. Characterization, 50, 261-267, 2003.
• [4] Bejar, M. A., Moreno, E., Abrasive wear resistance of boronized carbon and low-alloy stell, J. of Mater, Processing Technology, 173, 352-358, 2006.
• [5] Martini, C., Palombarini, G., Poli, G., Prandstraller, D., Sliding and abrasive wear behaviour of boride coating Wear, 256, 608-613, 2004.
• [6] 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, Tribology Intern. 36, 155-161, 2003.
• [7] Meric, C., Sahina, S., Yilmazb, S. S., Investigation of the effect on boride layer of powder particle size used in boronizing with solid boron-yielding substances, Mater. Res. Bulletin, 35, 2165–2172, 2000.
• [8] Lubas, J., Practical application of boron-modified sliding pairs in I.C. engine, Tribology International, Vol. 43, pp. 2046-2050, 2010.
• [9] Panish, N., Wangyao, P., Hannongbua, S., Sricharoenchai, P., Sun, Y., Tribological study of nano-multilayer ultra-hard coatings based on TiB2, Rev. Adv. Mater Sci, 13, 117-124, 2006.
• [10] Basu, B., Vleugels, J., Van Der Biest, O., Fretting wear behavior of TiB2-based materials against bearing steel under water and oil lubrication, Wear, 250, 631–641, 2001.
• [11] Ozimina, D., Przeciwzuzyciowe warstwy wierzchnie w układach tribologicznych, Politechnika Swietokrzyska, Kielce 2002.
• [12] Stolarski, T. A., Analysis of the resistance to motion in a sliding contact, Wear, 171, Is. 1-2, 203-209, 1994.
• [13] Schouwenaars, R., Jacobo, V. H., Ortiz, A., Microstructure aspect of wear in soft tribological alloys, Wear, 2007, 727-735, 2007.
• [14] Pranay, A., Liang, H., Usta, M., Ucisik, A. H., Wear and surface characterization of boronized pure iron, J. of Tribology, 129, 1-10, 2007.
• [15] Berger, M., Hogmark, S., Evaluation of TiB2 coatings in sliding contact against aluminium, Surf. Coat. Technol. 149, 14-20, 2002.
• [16] Guha, D., Chowdhuri, R., The effect of surface roughness on the temperature at the contact between sliding bodies, Wear, 197, 63-73, 1996.