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An experimental investigation of gold coated silicon using nano powder mixed micro-wire electro discharge machining

Jarin, Sams and Saleh, Tanveer and Asan Gani, Abdul Muthalif and Ali, Mohammad Yeakub (2016) An experimental investigation of gold coated silicon using nano powder mixed micro-wire electro discharge machining. In: Advances in Materials and Processing Technologies, 2016 (AMPT 2016), 8-11 Nov 2016, Kuala Lumpur. (Unpublished)

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Micro Wire Electro Discharge Machining (µ-WEDM) is a type of electro-discharge machining (EDM) process where wire is used instead of a rigid tool. It is a reliable and precise machining process, which is commonly used to produce various complex structural shapes for a wide range of industrial applications. However, to machine a semiconductor material of high resistivity like silicon (Si) requires more advanced processing to produce larger electrical sparks during the µ-WEDM operation. Current (µ-WEDM) technology is not enough to realize a stable machining environment for Si. In this research a new type of µ-WEDM process for Si machining was investigated. At first Si was temporarily coated with gold and then nano powder mixed dielectric medium was used for the WEDMing process. The main purpose of this work is to investigate the effects of different nano powder concentrations on two important response factors such as material removal rate (MRR) and spark gap (SG). In this regard, the µ-WEDMing of gold coated silicon was carried out in pure dielectric EDM oil and also in three different concentrations (0.1g/L,1g/L,2g/L) of nano powder mixed dielectric oil to conduct an initial study with the aim to achieve better machining accuracy and stability. Based on the experimental investigations, it was obtained that at different carbon concentrations the MRR were found to be increased on average minimum ~ 1% to maximum ~ 33% respectively, as compared to machining in pure dielectric medium. The spark gap was also observed to be increased by a significant margin on average of ~ 2% to up to ~ 159% than without using any nano powder concentration, correspondingly.

Item Type: Conference or Workshop Item (Slide Presentation)
Additional Information: 6808/52942
Uncontrolled Keywords: Micro-WEDM, nano-powder, Gold Coated Si wafer,Material Removal Rate, Spark Gap, Surface roughness.
Subjects: T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Kulliyyah of Engineering > Department of Mechatronics Engineering
Depositing User: Dr. Tanveer Saleh CEng MIMechE
Date Deposited: 16 Nov 2016 18:37
Last Modified: 07 Mar 2018 08:49
URI: http://irep.iium.edu.my/id/eprint/52942

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