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Sustainable Construction and Design <strong>2011</strong> [2] Larsen, T., Andersen, T.L., Thorning, B., Horsewell, A., Vigild, M.E., Comparison of friction and wear for an epoxy resin reinforced by a glass or a carbon/aramid hybrid weave, Wear, 262, 1013-1020, 2007. [3] Sumer, M., Unal, H., Mimaroglu, A., Evaluation of tribological behaviour of PEEK and glass fibre reinforced PEEK composite under dry sliding and water lubricated conditions, Wear, 265, 1061-1065, 2008. [4] Chang, L., Zhang, Z., Tribological properties of epoxy nanocomposites. Part II. A combinative effect of short carbon fibre with nano-TiO 2 , Wear, 260, 869-878, 2006. [5] Suresha, B., Siddaramaiah, Kishore, Seetharamu, S., Kumaran, P.S., Investigations on the influence of graphite filler on dry sliding wear and abrasive wear behaviour of carbon fabric reinforced epoxy composites, Wear, 267, 1405-1414, 2009. [6] Jia, J.H., Zhou, H.D., Gao, S.Q., Chen, J.M., A comparative investigation of the friction and wear behavior of polymide composites under dry sliding and water-lubricated condition, Materials Science and Engineering A, 356, 48-53, 2003. [7] Jia, J., Chen, J., Zhou, H., Hu, L., Chen, L., Comparative investigation on the wear and transfer behaviors of carbon fiber reinforced polymer composites under dry sliding and water lubrication, Composites Science and Technology, 65, 1139-1147, 2005. [8] Zhang, H., Zhang, Z., Friedrich, K., Effect of fiber length on the wear resistance of short carbon fiber reinforced epoxy composites, Composite Science and Technology, 67, 222-230, 2007. [9] Zhou, X.H., Sun, Y.S., Wang, W.S., Influences of carbon fabric/epoxy composites fabrication process on its friction and wear properties, Journal of Materials Processing Technology, 209, 4553-4557, 2009. [10] Lu, X., Wong, K.C., Wong, P.C., Mitchell, K.A.R., Cotter, J., Eadie, D.T., Surface characterization of polytetrafluoroethylene (PTFE) transfer films during rolling-sliding tribology tests using X-ray photoelectron spectroscopy, Wear, 261, 1155-1162, 2006. [11] Suresha, B., Chandramohan, G., Siddaramaiah, Samapthkumaran, P., Seetharamu, S., Three-body abrasive wear behaviour of carbon and glass fiber reinforced epoxy composites, Materials Science and Engineering A, 443, 285-291, 2007. [12] Yamamoto, Y., Hashimoto, M., Friction and wear of water lubricated PEEK and PPS sliding contacts Part 2. Composites with carbon or glass fibre, Wear, 257, 181-189, 2004. [13] Kukureka, S.N., Hooke, C.J., Rao, M., Liao, P., Chen. Y.K., The effect of fibre reinforcement on the friction and wear of polyamide 66 under dry rolling-sliding contact, Tribology <strong>International</strong>, 32, 107- 116, 1999. [14] Werner, P., Altstadt, V., Jaskulka, R., Jacobs, O., Sandler, J.K.W., Shaffer, M.S.P., Windle, A.H., Tribological behaviour of carbon-nanofibre-reinforced poly(ether ether ketone), Wear, 257, 1006- 1014, 2004. [15] Friedrich, K., Zhang, Z., Schlarb, A.K., Effects of various fillers on the sliding wear of polymer composites, Composites Sliding and Technology, 65, 2329-2343, 2005. [16] Zhang, G., Rasheva, Z., Schlarb, A.K., Friction and wear variations of short carbon fiber (SCF)/PTFE/graphite (10 vol.%) filled PEEK: Effects of fiber orientation and nominal contact pressure, Wear, 268, 893-899, 2010. [17] Myshkin, N.K., Petrokovets, M.I., Kovalev, A.V., Tribology of polymers: Adhesion, friction, wear and mass-transfer, Tribology <strong>International</strong>, 38, 910-921, 2005. [18] Mohrbacher, H., Celis, J.P., Roos, J.R., Laboratory testing of displacement and load induced fretting, Tribology <strong>International</strong>, 28(5), 269-278, 1995. [19] Buijnsters, J.G., Camero, M., Vázquez, L., Agulló-Rueda, F., Gago, R., Jiménez, I., Gómez- Aleixandre, C., Albella, J.M., Diamond and Related Materials, 19, 1093-1102, 2010. 58 Copyright © <strong>2011</strong> by Laboratory Soete
Sustainable Construction and Design <strong>2011</strong> TURNING SPECIALITIES OF ZrO 2 CERAMICS G. Fledrich, I. Pálinkás, R. Keresztes, L. Zsidai, K. Petróczki Institute for Mechanical Engineering Technology, Faculty of Mechanical Engineering, Szent István University, Gödöllő, Hungary www.geti.gek.szie.hu Abstract In place of brittle ceramics used so far have appeared up-to-date so called tough ceramic materials resisting better against mechanical effects [6]. Such material is the zirconium-dioxide, too. The important advantage of hard-turning is the applicability of universal tool. Various outlines can be formed by a tool given. Machining ceramics in case of using traditional machining (turning, milling, drilling) requires special technological conditions (tools, machine-tools, technological parameters, etc.) which are developing presently [2]. We would like extending our research work in this course, too. To clarify the machinability – turning – of ZrO 2 ceramics we developed a cutting force measurements for the applied CBN and PCD cutting tools. The forces were studied in the function of cutting speed and feed, the surfaces were analized by SEM and the cutting process was controlled by thermo-camera. The failure of cutting edges were also studied. The summarized results suggest the possible turning possibilities of ZrO 2 ceramics. Keywords polycrystal diamond, cubic boron nitride, 3D-topography, heat ring, surface roughness, friction 1 INTRODUCTION By industry development the demand is increasing for such materials to be applied at higher temperature beside at heavy physical and chemical load. The structural ceramics can have an important role exactly in this segment. The zirconium –dioxide is also such material [3]. The role of ceramics hard-machining is increasing presently [4]. The zirconium-dioxide deriving from its lower hardness and from other characteristics [1] is suitable to machine by tool having regular edge can become a potential material at piece or small- and medium series production. To ensure this it has to be known its cutting characteristics [5]. Our research work focusing a part of this in keeping with the recommendation of the company producing and developing zirconium-dioxide semi-finished products. 2 MATERIALS TESTED AND THEIR FORMS The common properties of engineering ceramics are that they have outstanding physical and chemical characteristics in very high temperature range [7]. The ceramics tested by us have got high hardness (1250-1800 HV), because of this it can be cut by polycrystal diamond and cubic boron nitride tools. The material tested is zirconium-dioxide ceramics. The specimens used at turning tests were cylindrical, their diameters were 16 and 20 mm (Figure 1). Figure 1. The zirconium-dioxide (Zn40) ceramics used at tests. 59 Copyright © <strong>2011</strong> by Laboratory Soete
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