Effect of Ultrasonic Electro-Chemical Polishing Parameters on Surface Roughness and Material Removal Rate of Medical Grade Cobalt Chromium Alloys

Is Prima Nanda, Muhammad Hafiz Jahare, Mohd Hasbullah Idris, Mohd Hazwan Hassim, Andril Arafat

Abstract


The fabrication of prosthesis from superalloys in bio-medical field is a challenging task as a result of strict tolerance requirement in surface finish. Precision surface finish is desired to avoid biocompatibility issue resulting from poor surface finish. Such surface finish requirement can be achieved by using Electro-Chemical Polishing (ECP) process. This research investigated the effect of applying ultrasonic vibration on ECP with process parameters, namely current (0.5A-2.5A) and time (2min-10min) on the surface roughness (Ra) and material removal rate (MRR) of cobalt chromium molybdenum (CoCrMo). The experiments were conducted using ECP and ultrasonic assisted ECP (UECP) processes whereby phosphoric acid (H3PO4) and SS 304 steel were used as electrolyte and electrode respectively. The result showed an increasing trend of MRR and Ra as the time and current increased in both processes. It was also found that ultrasonic assisted ECP at current (2.5A) and time (30 min) recorded the highest MRR (0.047 g/min) and the lowest Ra (2.139 µm).


Keywords


Prosthesis; ECP; UECP; Phosphoric acid; CoCrMo

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References


Abdul Ajiz, Gunawarman, Jon Affi, “The Effects of Short-Time Solution Treatment and Short-Time Aging on Mechanical Properties of Ti-6Al-4V for Orthopaedic Applications,†Int. J. on Advanced Science Engineering Information Technology. Vol. 5(4), pp. 329-334. 2015.

N.M. Huang, P.O. Kanchanbagh, A. Pradesh, “Analyzing the surface finish of knee implants to determine criteria for applications in Direct Metal Laser Sintering,†Nonferrous Materials Technology Development Center (NFTDC), 2012.

Sebastian Bauer, Patrik Schmuki, Klaus von der Mark, Jung Park, Engineering biocompatible implant surfaces: Part I: Materials and surfaces, Progress in Materials Science. vol. 58, Issue 3, pp. 261-326.

Ricardo Tejero, Eduardo Anitua, Gorka Orive, “Toward the biomimetic implant surface: Biopolymers on titanium-based implants for bone regeneration,†Progress in Polymer Science. vol. 39, issue 7, pp. 1406-1447, Jul. 2014.

P. Crook, "Cobalt and Cobalt Alloys," in Materials Handbook: Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, edited by L.A. Abel, et al (ASM International: Materials Park, OH, 2000), pp. 446.

M. Nishioka, Y. Yamabe, K. Hisatsune and H. Fujii, "Influence of Polishing of Denture as Resin and Metal Surfaces on Wettability with Water and Saliva," Dent Mater J, 25(1), 161-165 (2006).

Hokuto Aihara, Surface and biocompatibility study of electropolished Co-Cr Alloy L605, Master thesis, San Jose State University, 2009.

I.P. Konstantin, S.D. Stojan, and N.G. Branimir, Fundamental Aspects of Electrometallurgy. Kluwer Academic Publishers. New York 2002.

A. Kuhn, "The Electropolishing of Titanium and its Alloys," Metal Finishing, (2004).

S.-J. Lee and J.-J. Lai, "The Effects of Electropolishing (EP) Process Parameters on Corrosion Resistance of316L Stainless Steel," J Mater Process Technol, (2003).

N. Kobayashi, Y. Wu, M. Nomura, T. Sato, Precision treatment of silicon wafer edge utilizing ultrasonically assisted polishing technique, Journal of Materials Processing Technology (2008).

J.W. Mwangi, B.W. Ikua, G.N. Nyakoc, H. Zeidler, S.K. Kabini, Effect of low Frequency Vibration In Electrical Discharge Machining of AlSiC Metal Matrix Composite. Journal of Sustainable Research in Engineering, vol 1(2) pp. 45-50, 2014.

ASTM F2791 – 15, Standard Guide for Assessment of Surface Texture of Non-Porous Biomaterials in Two Dimensions. ASTM International, 2015.

L.G. Machado, M. A. Savi, “Medical Applications of Shape Memory Alloys,†Brazilian Journal of Medical and Biological Research. vol. 36, pp. 683–691. 2003.

C.-C. Lin and C.-C. Hu, "Electropolishing fo 304 Stainless Steel: Surface Roughness Control Using Experimental Design Strategies and Summarized Electropolishing Model," Electrochim Acta, 63, 3356-3363 (2008).




DOI: http://dx.doi.org/10.18517/ijaseit.8.5.4507

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