Formation of Hydroxyapatite Layer on Ti–6Al–4V ELI Alloy by Fine Particle Peening
Shoichi Kikuchi*1,†, Yuki Nakamura*2, Koichiro Nambu*3, and Toshikazu Akahori*4
*1Department of Mechanical Engineering, Graduate School of Engineering, Kobe University
1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
*2Department of Mechanical Engineering, National Institute of Technology, Toyota College, Toyota, Japan
*3Toyota Technological Institute, Nagoya, Japan
*4Department of Materials Science and Engineering, Faculty of Science and Technology, Meijo University, Nagoya, Japan
Fine particle peening (FPP) using hydroxyapatite (HAp) shot particles can form a HAp layer on room-temperature substrates by the transfer and microstructural modification of the shot particles. In this study, FPP with HAp shot particles was applied to form a HAp surface layer and improve the fatigue properties of Ti–6Al–4V extra-low interstitial (ELI) for use in bio-implants. The surface microstructures of the FPP-treated specimens were characterized by micro-Vickers hardness testing, scanning electron microscopy, energy-dispersive X-ray spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy. FPP with HAp shot particles successfully formed a HAp layer on the surface of Ti–6Al–4V ELI in a relatively short period by shot particle transfer at room temperature; however, the thickness and elemental composition of the HAp layer were independent of the FPP treatment time. The original HAp crystal structure remained in the surface-modified layer formed on Ti–6Al–4V ELI after FPP. Furthermore, FPP increased the surface hardness and generated compressive residual stresses at the treated surface of Ti–6Al–4V ELI. Four-point bending fatigue tests were performed at stress ratios of 0.1 and 0.5 to examine the effect of FPP with HAp shot particles on the fatigue properties of Ti–6Al–4V ELI. The fatigue life of the FPP-treated specimen was longer than that of the un-peened specimen because of the formation of a work-hardened layer with compressive residual stress. However, no clear improvement in the fatigue limit of Ti–6Al–4V ELI occurred after FPP with HAp shot particles because of subsurface failures from characteristic facets.
-  M. Long and H. J. Rack, “Titanium Alloys in Total Joint Replacement-A Materials Science Perspective,” Biomaterials, Vol.19, pp. 1621-1639, 1998.
-  A. Rouzrokh, C. Y. H. Wei, K. Erkorkmaz, and R. M. Pillar, “Machining Porous Calcium Plyphosphate Implants for Tissue Engineering Applications,” Int. J. of Automation Technology, Vol.4, No.3, pp. 291-302, 2010.
-  T. Kokubo, F. Miyaji, H. M. Kim, and T. Nakamura, “Spontaneous Formation of BoneLike Apatite Layer on Chemically Treated Titanium Metals,” J. of American Ceramics Society, Vol.79, No.4, pp. 1127-1129, 1996.
-  H. M. Kim, T. Himeno, M. Kawashita, J. H. Lee, T. Kokubo, and T. Nakamura, “Surface Potential Change in Bioactive Titanium Metal during the Process of Apatite Formation in Simulated Body Fluid,” J. of Biomedical Materials Research Part A, Vol.67, pp. 1305-1309, 2003.
-  R. B. Heimann, “Thermal Spraying of Biomaterials,” Surface and Coatings Technology, Vol.201, pp. 2012-2019, 2006.
-  S. Lazarinis, J. Karrholm, and N. P. Hailer, “Effects of Hydroxyapatite Coating of Cups Used in Hip Revision Arthroplasty,” Acta Orthopaedica, Vol.83, pp. 427-435, 2012.
-  T. Laonapakul, A. R. Nimkerdphol, Y. Otsuka, and Y. Mutoh, “Failure Behavior of Plasma-Sprayed HAp Coating on Commercially Pure Titanium Substrate in Simulated Body Fluid (SBF) under Bending Load,” J. of Mechanical Behavior of Biomedical Materials, Vol.15, pp. 153-166, 2012.
-  T. Laonapakul, Y. Otsuka, A. R. Nimkerdphol, and Y. Mutoh, “Acoustic Emission and Fatigue Damage Induced in Plasma-Sprayed Hydroxyapatite Coating Layers,” J. of Mechanical Behavior of Biomedical Materials, Vol.15, pp. 123-133, 2012.
-  M. Inagaki, Y. Yokogawa, and T. Kameyama, “Bond Strength Improvement of Hydroxyapatite/Titanium Composite Coating by Partial Nitriding during RF-Thermal Plasma Spraying,” Surface and Coatings Technology, Vol.173, pp. 1-8, 2003.
-  R. L. Reis and F. J. Monteriro, “Crystallinity and Structural Changes in HA Plasma-Sprayed Coatings Induced by Cyclic Loading in Physiological Media,” J. of Materials Science and Materials in Medicine, Vol.7, pp. 407-411, 1996.
-  I. M. O. Kangasniemi, C. C. P. M. Verheyen, E. A. V. der Velde, and K. De Groot, “In Vivo Tensile Testing of Fluorapatite and Hydroxylapatite Plasma-Sprayed Coatings,” J. of Biomedical Materials Research Part A, Vol.28, No.5, pp. 563-572, 1994.
-  M. Mizutani, R. Honda, Y. Kurashina, J. Komotori, and H. Ohmori, “Improved Cytocompatibility of Nanosecond-Pulsed Laser-Treated Commercially Pure Ti Surfaces,” Int. J. of Automation Technology, Vol.8, No.1, pp. 102-109, 2014.
-  E. Gariboldi and B. Previtali, “High Tolerance Plasma Arc Cutting of Commercially Pure Titanium,” J. of Materials Processing Technology, Vol.160, pp. 77-89, 2005.
-  R. Akatsuka, H. Ishihata, M. Noji, K. Matsumura, T. Kuriyagawa, and K. Sasaki, “Effect of Hydroxyapatite Film Formed by Powder Jet Deposition on Dentin Permeability,” European J. of Oral Sciences, Vol.120, pp. 558-562, 2012.
-  R. Akatsuka, K. Sasaki, M. S. S. Zahmaty, M. Noji, T. Anada, O. Suzuki, and T. Kuriyagawa, “Characteristics of Hydroxyapatite Film Formed on Human Enamel with the Powder Jet Deposition Technique,” J. of Biomedical Materials Research B, Vol.98, pp. 210-216, 2011.
-  N. Hayashi, S. Ueno, S. V. Komarov, E. Kasai, and T. Oki, “Fabrication of Hydroxyapatite Coatings by the Ball Impact Process,” Surface and Coatings Technology, Vol.206, pp. 3949-3954, 2012.
-  T. Mano, Y. Ueyama, K. Ishikawa, T. Matsumura, and K. Suzuki, “Initial Tissue Response to a Titanium Implant Coated with Apatite at Room Temperature Using a Blast Coating Method,” Biomaterials, Vol.23, pp. 1931-1936, 2002.
-  K. Ishikawa, Y. Miyamoto, M. Nagayama, and K. Asaoka, “Blast Coating Method: New Method of Coating Titanium Surface with Hydroxyapatite at Room Temperature,” J. of Biomedical Materials Research, Vol.38, pp. 129-134, 1997.
-  L. O’Neill, C. O’Sullivan, P. O’Hare, L. Sexton, F. Keady, and J. O’Donoghue, “Deposition of Substituted Apatites onto Titanium Surfaces Using a Novel Blasting Process,” Surface and Coatings Technology, Vol.204, pp. 484-488, 2009.
-  S. Kikuchi, S. Yoshida, Y. Nakamura, K. Nambu, and T. Akahori, “Characterization of the Hydroxyapatite Layer Formed by Fine Hydroxyapatite Particle Peening and its Effect on the Fatigue Properties of Commercially Pure Titanium under Four-Point Bending,” Surface and Coatings Technology, Vol.288, pp. 196-202, 2016.
-  S. Ota, H. Akebono, S. Kikuchi, K. Murai, J. Komotori, K. Fukazawa, Y. Misaka, and K. Kawasaki, “Surface Modification of Carbon Steel by Atmospheric-Controlled IH-FPP Treatment Using Mixed Chromium and High-Speed Steel Particles,” Materials Transactions, Vol.57, No.10, pp. 1801-1806, 2016.
-  S. Kikuchi, T. Fukuoka, T. Sasaki, J. Komotori, K. Fukazawa, Y. Misaka, and K. Kawasaki, “Increasing Surface Hardness of AISI 1045 Steel by AIH-FPP / Plasma Nitriding Treatment,” Materials Transactions, Vol.54, No.1, pp. 344-349, 2013.
-  Y. Kameyama and J. Komotori, “Effect of Micro Ploughing during Fine Particle Peening Process on the Microstructure of Metallic Materials,” J. of Materials Processing Technology, Vol.209, No.20, pp. 6146-6155, 2009.
-  Y. Kameyama, K. Nishimura, H. Sato, and R. Shimpo, “Effect of Fine Particle Peening Using Carbon-Black/Steel Hybridized Particles on Tribological Properties of Stainless Steel,” Tribology Int., Vol.78, pp. 115-124, 2014.
-  Y. Kameyama, H. Ohmori, H. Kasuga, and T. Kato, “Fabrication of Micro-Textured and Plateau-Processed Functional Surface by Angled Fine Particle Peening Followed by Precision Grinding,” CIRP Annals-Manufacturing Technology, Vol.64, No.1, pp. 549-552, 2015.
-  T. Ito, S. Kikuchi, Y. Hirota, A. Sasago, and J. Komotori, “Analysis of Pneumatic Fine Particle Peening Process by Using a High-Speed-Camera,” Int. J. of Modern Physics B, Vol.24, No.15-16, pp. 3047-3052, 2010.
-  S. Kikuchi, Y. Nakamura, K. Nambu, and M. Ando, “Effect of Shot Peening Using Ultra-Fine Particles on Fatigue Properties of 5056 Aluminum Alloy under Rotating Bending,” Materials Science and Engineering A, Vol.652, pp. 279-286, 2016.
-  T. Morita, H. Nakaguchi, S. Noda, and C. Kagaya, “Effects of Fine Particle Bombarding on Surface Characteristics and Fatigue Strength of Commercial Pure Titanium,” Materials Transactions, Vol.53, No.11, pp. 1938-1945, 2012.
-  T. Morita, K. Asakura, and C. Kagaya, “Effect of Combination Treatment on Wear Resistance and Strength of Ti-6Al-4V alloy,” Materials Science and Engineering A, Vol.618, pp. 438-446, 2014.
-  S. Kikuchi and J. Komotori, “Effect of Fine Particle Peening on Atmospheric Oxidation Behavior of Ti-6Al-4V Alloy,” J. of the Japan Institute of Metals and Materials, Vol.80, No.2, pp. 114-120, 2016.
-  S. M. Wong, “Residual Stress Measurements on Chromium Films by X-Ray Diffraction Using the sin2ψ Method,” Thin Solid Films, Vol.53, pp. 65-71, 1978.
-  Q. Luo and A. H. Jones, “High-Precision Determination of Residual Stress of Polycrystalline Coatings Using Optimised XRD-sin2ψ Technique,” Surface and Coatings Technology, Vol.205, pp. 1403-1408, 2010.
-  S. Kikuchi, T. Imai, H. Kubozono, Y. Nakai, A. Ueno, and K. Ameyama, “Evaluation of Near-Threshold Fatigue Crack Propagation in Ti-6Al-4V Alloy with Harmonic Structure Created by Mechanical Milling and Spark Plasma Sintering,” Frattura ed Integrità Strutturale, Vol.34, pp. 334-340, 2015.
-  S. Kikuchi, T. Imai, H. Kubozono, Y. Nakai, M. Ota, A. Ueno, and K. Ameyama, “Effect of Harmonic Structure Design with Bimodal Grain Size Distribution on Near-Threshold Fatigue Crack Propagation in Ti–6Al–4V Alloy,” Int. J. of Fatigue, Vol.92, pp. 616-622, 2016.
-  R. K. Nalla, B. L. Boyce, J. P. Campbell, J. O. Peters, and R. O. Ritchie, “Influence of Microstructure on High-Cycle Fatigue of Ti-6Al-4V: Bimodal vs. Lamellar Structures,” Metallurgical and Materials Transactions A, Vol.33, pp. 899-918, 2002.
-  B. L. Boyce and R. O. Ritchie, “Effect of Load Ratio and Maximum Stress Intensity on the Fatigue Threshold in Ti-6Al-4V,” Engineering Fracture Mechanics, Vol.68, pp. 129-147, 2001.
-  H. Oguma and T. Nakamura, “The Effect of Stress Ratios on Very High Cycle Fatigue Properties of Ti-6Al-4V,” Key Engineering Materials, Vol.261-263, pp. 1227-1232, 2004.
-  JSMS Committee on Fatigue of Materials and JSMS Committee on Reliability Engineering, Standard evaluation method of fatigue reliability for metallic materials -Standard Regression Method of S–N Curves- [JSMS-SD-6-08], The Society of Materials Science Japan, 2008.
-  M. Haddad, R. Zitoune, F. Eyma, and B. Castanié, “Influence of Machining Process and Machining Induced Surface Roughness on Mechanical Properties of Continuous Fiber Composites,” Experimental Mechanics, Vol.55, No.3, pp. 519-528, 2015.
-  M. Haddad, R. Zitoune, H. Bougherara, F. Eyma, and B. Castanié, “Study of Trimming Damages of CFRP Structures in Function of the Machining Processes and Their Impact on the Mechanical Behavior,” Composites Part B: Engineering, Vol.57, pp. 136-143, 2014.
-  T. Morita, “Effects of shot peening condition on surface properties and fatigue strength of Titanium,” Mechanical Surface Tech, Vol.10, pp. 36-38, 2016.
-  K. N. Smith, T. H. Topper, and P. Watson, “A Stress-Strain Function for the Fatigue of Metals (Stress-Strain Function for Metal Fatigue Including Mean Stress Effect),” J. of Materials, Vol.5, pp. 767-778, 1970.
-  S. Heinz, F. Balle, G. Wagner, and D. Eifler, “Analysis of Fatigue Properties and Failure Mechanisms of Ti6Al4V in the Very High Cycle Fatigue Regime Using Ultrasonic Technology and 3D Laser Scanning Vibrometry,” Ultrasonics, Vol.53, pp. 1433-1440, 2013.
-  D. F. Neal and P. A. Blenkinsop, “Internal Fatigue Origins in α-β Titanium Allols,” Acta Metallurgica, Vol.24, No.1, pp. 59-63, 1976.