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

Main Authors:	Nanda, Is Prima; Department of Mechanical Engineering, Faculty of Engineering, Universitas Andalas, Padang 25163, Sumatera Barat, Indonesia, Jahare, Muhammad Hafiz; Faculty of Mechanical, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Johor, Malaysia., Idris, Mohd Hasbullah; Faculty of Mechanical, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Johor, Malaysia., Hassim, Mohd Hazwan; Faculty of Mechanical, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Johor, Malaysia., Arafat, Andril; Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Padang, Padang 25131, Sumatera Barat, Indonesia
Format:	Article info application/pdf eJournal
Bahasa:	eng
Terbitan:	International Journal on Advanced Science, Engineering and Information Technology , 2018
Subjects:	Prosthesis ECP UECP Phosphoric acid CoCrMo
Online Access:	http://insightsociety.org/ojaseit/index.php/ijaseit/article/view/4507 http://insightsociety.org/ojaseit/index.php/ijaseit/article/view/4507/pdf_897

Daftar Isi:

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).