Effect of Al2O3 Reinforcement and Al2O3–13 wt% TiO2 Bond Coat on Plasma Sprayed Hydroxyapatite Coating
In present work an attempt has been made to enhance mechanical properties of plasma sprayed hydroxyapatite coating by addition of 10 wt% aluminum oxide. A bond coat of Al2O3-13TiO2 has been applied to improve strength of hydroxyapatite composite coating. Mechanical properties of coatings with addition of alumina and with incorporation of bond coat have been investigated in accordance with the ASTM C 633-79. Results indicate that the tensile bond strength of hydroxyapatite coating increased by 13 per cent by alumina reinforcement and 25 per cent by both reinforcement and application of bond layer respectively. The area of adhesive failure was found to decrease for hydroxyapatite-alumina composite coating and hydroxyapatite composite coating with bond coat as compared to pure hydroxyapatite coating. The microharness of specimens was found to increase with reinforcement, however the highest hardness was recorded for bond coat. The microhardness was found to decrease with distance from substrate coating interface.
Defence Science Journal, 2012, 62(1), pp.193-198, DOI:http://dx.doi.org/10.14429/dsj.62.1039
Hench, L.L. Bioceramics: from concept to clinic. J. Am. Ceram. Soc,. 1991, 74(7), 1487-510.
Suchanek, W. & Y oshimura, M. Processing and properties of hydroxyapatite-based biomaterials for use as hard tissue replacement implants. J. Mater. Res., 1998, 13(1), 94-117.
Kuo, M.C. & Y en, S.K. The process of electrochemical deposited hydroxyapatite coatings on biomedical titanium at room temperature. Mater. Sci. Eng. C, 2002, 20(3), 153-60.
Webster, T.J.; Ergun, C.; Doremus, R.H.; Siegel, R.W. & Bizios, R. Enhanced functions of osteoblasts on nanophase ceramics. Biomaterials, 2000, 21(17), 1803-810.
Hayashi, K.; Matsuguchi, N.; Uenoyama, K.; Kanemaru, T. & Sugioka, Y . Evaluation of metal implants coated with several types of ceramics as biomaterials, J. Biomed. Mater. Res., 1989, 23(14), 1247-259.
Lynn, A.K. & Duquesnay, D.L. Hydroxyapatite-coated Ti-6Al-4V: Part 1: The effect of coating thickness on mechanical fatigue behavior. Biomaterials, 2002, 23(9), 1937-946.
Chang, E.; Chang, W.J.; Wang, B.C. & Y ang, C.Y. Plasma spraying of zirconia-reinforced hydroxyapatite composite coatings on titanium. J. Mater. Sci. Mater. Med. 1997, 8(4), 193-200.
Fu, L.; Khor, K.A. & Lim, J.P. Effect of yttria stabilized zirconia on plasma sprayed hydroxyapatite/yttria stabilized zirconia composite coatings. J. Am. Ceram. Soc., 2002, 85(4), 800-06.
Kurzweg, H.; Heimann, R.B.; Troczynski, T. & Wayman, M.L. Development of plasma-sprayed bioceramic coatings with bond coats based on titania and zirconia. Biomaterials, 1998, 9(16), 1507-511.
Champion, E.; Gautier, S. & D. Bernache-Assollant, Characterization of hot pressed Al2O3-platelet reinforced hydroxyapatite composite. J. Mater. Sci. Mater. Med. 1996, 7(..), 125-30.
Webster, T.J.; Siegel, R.W. & Bizios, R. Osteoblast adhesion on nanophase ceramics, Biomaterials, 1999, 20(19), 1221-227.
Yip, C.S.; Khor, K.A.; Loh, N.L. & Cheang, P. Thermal spraying of Ti-6Al-4V/hydroxyapatite composites coating: powder processing and post-spray treatment, J. Mater. Proc. Technol., 1997, 65(2), 73-79.
Balani, Kantesh; Chen, Y ao; Hamirkar, Sandip P.; Dahotre, Narendra B. & Agarwal, Arvind, Acta Biomaterialia, 2007, 3(3), 944.
Wanga, Y .Y.; Li, C.J. & Ohmori, A. Influence of surface roughness on the bonding mechanism of high velocity oxyfuel sprayed coatings. Thin Solid Films, 2005, 485(1-2), 141-47.
Fauchais, P.; Fukumoto, M. & Vardelle, A. Knowledge concerning splat formation. J Thermal Spray Technol., 2004, 13(3), 337-60.
Khor, K.A.; Gu, Y .W.; Quek, C.H. & Cheang, P. Plasma spraying of graded hydroxyapatite/Ti-6Al-4V coatings. Surf. Coat. Technol. 2003, 168(2-3), 195-201.
Kumar, R.R. & Maruno, S. Functionally graded coatings of HA-G-Ti composites and their in vivo studies. Mater. Sci. Eng. A, 2002, 334(1-2), 156-62.
Kumar, R.R & Wang, M. Functionally graded bioactive coatings of hydroxyapatite/titanium oxide composite system. Mater. Lett., 2002, 5(...),133-37.
Li, H.; Khor, K.A. & Cheang, P. Impact formation and microstructure characterization of thermal sprayed hydroxyapatite/titania composite coatings. Biomaterials, 2003, 24(6), 949-57.
Li, H.; Khor, K.A. & Cheang, P. Titanium dioxide reinforced hydroxyapatite coatings deposited by high velocity oxy-fuel (HVOF) spray. Biomaterials, 2002, 23(1), 85-91.
Zheng, X.B., Huang, M.H. & Ding, C.X. Bond strength of plasma sprayed hydroxyapatite/Ti composite coatings, Biomaterials, 2000, 21(8), 841-49.
Lamy, D.; Pierre, A.C. & Heimann, R.B. Hydroxyapatite coatings with a bond coat of biomedical implants by plasma projection. J. Mater. Res., 1996, 11(3), 680-86.
Chou, B-Y. & Chang, E. Plasma sprayed zirconia bond coat as an intermediate layer for hydroxyapatite coating on titanium alloy substrate. J. Mater Sci. Mater. Med. 2002, 13(9), 589-95.
Chou, B-Y. & Chang, E. Interface investigation of plasmasprayed hydroxyapatite coating on titanium alloy with ZrO2 intermediate layer as a bond coat. Scr. Materialia, 2001, 45(4), 487-93.
Lu, Y -P.; Li, M-S.; Li, S-T.; Wang, Z-G. & Zu, R-F. Plasma –sprayed hydroxyapatite + titania composite bond coat for hydroxyapatite coating on titanium substrate. Biomaterials, 2004, 25(18), 4393-403.
Balani, K.; Anderson, R.; Laha, T.; Andara, M.; Tercero, J.; Crumpler, E. & Agarwal, A. Plasma-sprayed carbon nanotube reinforced hydroxyapatite coatings and their interaction with human osteoblasts in vitro. Biomaterials, 2007, 28(4), 618-24.
Evis, Z. & Doremus, R.H. Coatings of hydroxyapatitenanosize alpha alumina composites on Ti-6Al-4V. Mater. Lett. 2005, 59(29-30), 3824-827.
?stel, F. Plasma spray coating technology. Istanbul Technical University, 1995. [MSc Thesis]
Gu, Y .W.; Khor, K.A. & Cheang, P. In vitro studies of plasma-sprayed hydroxyapatite/ti-6al-4v composite coatings in simulated body fluid (SBF). Biomaterials, 2003, 24(9), 1603-611.
Zheng, X.; Huang, M. & Ding, C. Bonding strength of plasma-sprayed hydroxyapatite/Ti composite coatings. Biomaterials, 2000, 21(8), 841-49.
Çelik, E.; Avci, E. & Y ilmaz, F. Evaluation of interface reactions in thermal barrier ceramic coatings. Surf. Coat Technol. 1997, 79(...), 361-65.
Oktar, F.N. Characterization of processed tooth hydroxyapatite and bioglass for potential application in dentistry. Bosphorous University, Biomedical Engineering Institute 1999. [PhD Thesis]
Onder, A.; Osman, E-A. & Sabri, A. Hydroxyapatite coating on titanium substrate by electrophoretic deposition method: Effect of titanium dioxide inner layer on adhesion strength and hydroxyapatite decomposition. Surf. Coat. Technol. 2008, 202 (...), 2482-487.
He, L-P.; Mai, Y . W. & Chen, Z-Z. Effects of anodization voltage on CaP/Al2O3-Ti nanometer biocomposites. Nanotechnology, 2004, 15(...), 1465-471.
He, L-P.; Wu, Z-J. & Chen, Z-Z. In-situ growth of nanometric network calcium phosphate/porous Al2O3 biocomposite coating on Al-Ti substrate. Chinese J. Nonferrous Metals, 2004, 14 (...), 460-64.
Mobasherpour, I.; Hashjin, M.S.; Toosi, S.S.R. & Kamachali, R.D. Effect of the addition of ZrO2-Al2O3 on nanocrystalline hydroxyapatite bending strength and fracture toughness. Ceramic International, 2009, 35 (....), 1569-574.
Goller, G. The effect of bond coat on mechanical properties of plasma sprayed bioglass-titanium coatings. Ceramic International, 2004, 30(3), 351-55.
Hing, K.A. Bioceramic bone graft substitutes: Influence of porosity and chemistry. Appl. Ceram. Technol. 2005, 2(3),184-99.
Schmidt, C.; Kaspar, D.; Sarkar, M.R.; Claes, L.E. & Ignatius, A.A. A scanning electron microscopy study on human osteoblast morphology on five orthopedic metals. J. Biomed. Mater. Res., 200, 63(3), 252-61.
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