Investigation of surface roughness in micro-EDM of nonconductive ZrO2 ceramic with powder mixed dielectric fluid

Sabur, Abdus and Syed Mohammed, Mehdi and Ali, Mohammad Yeakub and Maleque, Md. Abdul and Moudood, M. A. (2015) Investigation of surface roughness in micro-EDM of nonconductive ZrO2 ceramic with powder mixed dielectric fluid. Advanced Materials Research, 1115. pp. 16-19. ISSN 1022-6680

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Abstract

This paper investigates the average surface roughness (Ra) in micro-electrical discharge machining of electrically nonconductive zirconium oxide (ZrO2) ceramic using powder mixed dielectric. The gap voltage and concentration of tantalum carbide (TaC) powder are considered as the variable parameters for the investigation while other conditions are kept constant. Response surface methodology is used for design of experiments and to analyze the results for a better surface finish. The study shows that both the gap voltage and powder concentration have a significant effect on the average surface roughness of ZrO2. However, voltage has the higher effect than powder concentration on the surface integrity. The optimized values of gap voltage and powder concentration are found to be 94.39 V and 6.28g/l respectively for a minimum surface roughness in micro-EDM of ZrO2.

Item Type:	Article (Journal)
Additional Information:	4751/43929
Uncontrolled Keywords:	Micro-electro discharge machining, assisting electrode, surface roughness
Subjects:	T Technology > TS Manufactures > TS200 Metal manufactures. Metalworking
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Prof. Ir. Dr. Mohammad Yeakub Ali
Date Deposited:	24 Jul 2015 09:03
Last Modified:	21 Nov 2017 14:50
URI:	http://irep.iium.edu.my/id/eprint/43929

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