Materials Performance

JUN 2016

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

Issue link: https://mp.epubxp.com/i/684399

Contents of this Issue

Navigation

Page 59 of 100

57 NACE INTERNATIONAL: VOL. 55, NO. 6 MATERIALS PERFORMANCE JUNE 2016 FIGURE 4 Logarithm of the impedance modulus |Z| as a function of the logarithm of the angular frequency ω. FIGURE 5 Thrombogenicity behavior of HAP/alumina. Thus a proper clotting material can be de- signed to meet requirements. Conclusions The surface behavior of HAP/alumina with Ar + ion implantation has been suc- cessfully investigated. RBS analysis con- firms the desired stoichiometric ratio of calcium to phosphorous in the prepared samples. Argon ions improve corrosion re- sistance and electrochemical stability. The maximum impedance corrosion resistance was found at the ion dose of 1 × 10 15 ions/ cm 2 . The thrombogenicity study proves that clotting increases as the ion dose in- creases. Thus, a material can be designed w ith th e clottin g p erc ent a ge required for materials to be used as hard tissue implants. Acknowledgments This work is financially supported by the Department of Science and Technology (DST), New Delhi, India. One of the authors (Md. Shahid) is thankful to DST for his fel- lowship. Authors acknowledge the help provided by Central Instrumentation Facil- ity (CIF) of the Institute, IUAC New Delhi, for ion implantation and RBS analysis. References 1 S.R . Cummings, et al ., "Epidemiolog y of Osteoporosis and Osteoporotic Fractures," Epidemiologic Reviews 7, 1 (1985): p. 178. 2 J.-A. Epinette, M.T. Manley, Fifteen Years of Clinical Experience with Hydroxyapatite Coat- ings in Joint Arthroplasty (Berlin, Germany : Springer Science & Business Media, 2003). 3 J. Jagielski, et al., "Ion implantation for Sur- face Modification of Biomaterials," Surf. & Coat. Tech. 200 (2006): p. 6,355. 4 D. Motlagh, et al., "Hemocompatibility Evalu- ation of Poly (Glycerol-Sebacate) in Vitro for Vascular Tissue Engineering," Biomaterials 27, 24 (2006): p. 4,315. 5 J. Hong, et al., "Material-Specific Thrombin Gen eration Fol lowing Contact Between Metal Surfaces and Whole Blood," Biomateri- als 26, 12 (2005): p. 1,397. 6 M. Sadat-Shojai, et al., "Synthesis Methods for Nanosized Hydroxyapatite with Diverse Structures," Acta Biomaterialia 8 (2013): p. 7,591. 7 I.-S. Kim, P.N. Kumta, "Sol-Gel Synthesis and Characterization of Nanostructured Hy- droxyapatite Powder," Materials Science and Engineering: B 111, 2 (2004): p. 232. 8 W. Weng, J.L. Baptista, "Preparation and Characterization of Hydroxyapatite Coatings on Ti6Al4V Alloy by a Sol-Gel Method," J. of the American Ceramic Society 82, 1 (1999): p. 27. Continued on page 58 Corrosion and Thrombogenicity of Argon-Implanted HAP/Alumina

Articles in this issue

Archives of this issue

view archives of Materials Performance - JUN 2016