Assistive electro discharge machining of ain ceramics

Aydarkhan Sarsen, Azat Bilal, M. Ravi Sankar, Didier Talamona, Asma Perveen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electro discharge machining process experiences limitation due to the non-conductive nature of the workpiece material. However, researchers proposed assistive EDM technique to machine nonconductive materials in the past. These assistive techniques require a minimal thickness of 100 µm conductive coating on the workpiece surface which usually takes longer time to coat the surface using PVD (physical vapor deposition) method. In this paper, a new modified assistive EDM method has been proposed to machine nonconductive Aluminum Nitride ceramics successfully. A three layers coating was used that included silver coating, carbon tape and silver nano-powder on a non-conductive aluminium nitride. This coating aids in conducting EDM operation due to the availability of conductive particles. Apart from the decomposition of dielectric that facilitates carbon particles on top of conductive carbon layer, coating itself also contributes in conductive silver particles. Therefore, carbon as well as silver debris that remains on the ceramics surface aids in continuous spark generation which in turn creates alternative thermal load and thus removes materials.

Original languageEnglish
Title of host publicationNano Engineering and Materials Technologies III
EditorsKazuo Umemura
PublisherTrans Tech Publications
Pages109-113
Number of pages5
ISBN (Print)9783035714302
DOIs
Publication statusPublished - Jan 1 2019
Event7th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2018 and International Conference on Materials Technology and Applications, ICMTA 2018 - Sapporo, Japan
Duration: Oct 26 2018Oct 29 2018

Publication series

NameMaterials Science Forum
Volume947 MSF
ISSN (Print)0255-5476

Conference

Conference7th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2018 and International Conference on Materials Technology and Applications, ICMTA 2018
CountryJapan
CitySapporo
Period10/26/1810/29/18

    Fingerprint

Keywords

  • Assisted EDM
  • Ceramics
  • Nano powder
  • Silver coating

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Sarsen, A., Bilal, A., Ravi Sankar, M., Talamona, D., & Perveen, A. (2019). Assistive electro discharge machining of ain ceramics. In K. Umemura (Ed.), Nano Engineering and Materials Technologies III (pp. 109-113). (Materials Science Forum; Vol. 947 MSF). Trans Tech Publications. https://doi.org/10.4028/www.scientific.net/MSF.947.109