{"title":"Nanomechanical Characterization of Titanium Alloy Modified by Nitrogen Ion Implantation","authors":"Josef Sepitka, Petr Vlcak, Tomas Horazdovsky, Vratislav Perina","volume":120,"journal":"International Journal of Materials and Metallurgical Engineering","pagesStart":1451,"pagesEnd":1455,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10005936","abstract":"
An ion implantation technique was used for designing the surface area of a titanium alloy and for irradiation-enhanced hardening of the surface. The Ti6Al4V alloy was treated by nitrogen ion implantation at fluences of 2·1017<\/sup> and 4·1017<\/sup> cm-2<\/sup> and at ion energy 90 keV. The depth distribution of the nitrogen was investigated by Rutherford Backscattering Spectroscopy. The gradient of mechanical properties was investigated by nanoindentation. The continuous measurement mode was used to obtain depth profiles of the indentation hardness and the reduced storage modulus of the modified surface area. The reduced storage modulus and the hardness increase with increasing fluence. Increased fluence shifts the peak of the mechanical properties as well as the peak of nitrogen concentration towards to the surface. This effect suggests a direct relationship between mechanical properties and nitrogen distribution.<\/p>\r\n","references":"[1]\tM. Peters, J. Kumpfert, C. H. Ward, C. Leyens, \u201cTitanium Alloys for Aerospace Applications,\u201d Adv. Eng. Mater., vol. 5, pp. 419-427, 2003. \r\n[2]\tO. Schauerte, \u201cTitanium in Automotive Production,\u201d Adv. Eng. Mater., vol. 5 pp. 411-418, 2003.\r\n[3]\tM.A. Khan, R.L. Williams, D.F. Williams, \u201cThe corrosion behaviour of Ti\u20136Al\u20134V, Ti\u20136Al\u20137Nb and Ti\u201313Nb\u201313Zr in protein solutions,\u201d Biomaterials, vol. 20, pp. 631-637, 1999.\r\n[4]\tS. Podzimek, M. Tomka, T. Nemeth, L. Himmlova, P. Matucha, J. Prochazkova, \u201cInfluence of metals on cytokines production in connection with successful implantation therapy in dentistry,\u201d Neuroendocrinology Letters, vol. 31, pp. 657-662, 2010.\r\n[5]\tY. Luo, S. Ge, \u201cFretting wear behavior of nitrogen ion implanted titanium alloys in bovine serum lubrication,\u201d Tribol. Int., vol. 42, pp. 1373-1379, 2009.\r\n[6]\tY. Itoh, A. Itoh, H. Azuma, T. Hioki, \u201cImproving the tribological properties of Ti-6Al-4V alloy by nitrogen-ion implantation,\u201d Surf. Coat. Technol., vol. 111, pp. 172-176, 1999.\r\n[7]\tS. A. Ahmad Kamal, R. Ritikos, S. Abdul Rahman, \u201cWetting behaviour of carbon nitride nanostructures grown by plasma enhanced chemical vapour deposition technique,\u201d Appl. Surf. Sci., vol. 328, pp. 146-153, 2015.\r\n[8]\tP. Vlcak, F. Cerny, Z. Weiss, S. Danis, J. Sepitka, Y. Tolde, V. Jech, \u201cThe effect of nitrogen ion implantation on the surface properties of Ti6Al4V alloy coated by a carbon nanolayer,\u201d Journal of Nanomaterials., vol. 2013, art. no. 475758, 2013.\r\n[9]\tP. Vlcak, I. Jirka, \u201cProtective sliding carbon-based nanolayers prepared by argon or nitrogen ion-beam assisted deposition on Ti6Al4V alloy,\u201d Journal of Nanomaterials, vol. 2016, art. no. 1697090, 2016\r\n[10]\tB. S. Yilbas, S.Z. Shuja, \u201cLaser treatment and PVD TiN coating of Ti\u20136Al\u20134V alloy,\u201d Surf. Coat. Technol., vol. 130, pp. 152\u2013157, 2000.\r\n[11]\tJ. Hong, X. Zhilhua, \u201cStudy on Processing of Titanium Surface Nitrogenization,\u201d Chinese J. Rare Metals., vol. 22, pp. 295\u2013299, 1998.\r\n[12]\tP. Vlcak, F. Cerny, J. Drahokoupil, J. Sepitka, Z. Tolde, \u201cThe microstructure and surface hardness of Ti6Al4V alloy implanted with nitrogen ions at an elevated temperature,\u201d J. Alloys Compounds., vol. 620, pp. 45-54, 2015.\r\n[13]\tH. Schmidt, A. Schminke, M. Schmiedgen, B. Baretzky, \u201cCompound formation and abrasion resistance of ion-implanted Ti6Al4V,\u201d Acta Mater., vol. 49, pp. 487\u2013 495, 2001.\r\n[14]\tP. Vlcak, J. Sepitka, J. Drahokoupil, T. Horazdovsky, Z. Tolde, \u201cStructural characterization and mechanical properties of a functionalized titanium nitride-based nanolayer prepared by ion implantation on a titanium alloy\u201c, Journal of Nanomaterials, submitted for publication.\r\n[15]\tW. C. Oliver, G. M. Pharr, \u201cAn improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments,\u201d J. Mater. Res., vol. 7, pp. 1564-1583, 1992.\r\n[16]\tS. A. S. Asif, K. J. Wahl, R. J. Colton, \u201cNanoindentation and contact stiffness measurement using force modulation with a capacitive load-displacement transducer,\u201d Review of Scientific Instruments, vol. 70, pp. 2408-2413, 1999.\r\n[17]\tISO 14577-1, \u201cMetallic materials - Instrumented indentation test for hardness and materials parameters - Part 1: Test method,\u201d2002. ","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 120, 2016"}