An overview of electric discharge machining of ceramics and ceramic based composites

Pachaury, Yash; Tandon, Puneet

doi:10.1016/j.jmapro.2016.12.010

Cited by 114 publications

(44 citation statements)

References 111 publications

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“…It serves as an alternative to traditional processes such as milling, drilling, and polishing [1]. EDM has proven to have an outstanding performance in machining advanced materials and in producing highly complex shapes [2][3][4][5][6]. Thus, it recently draws the attention of quite several researchers and industries.…”

Section: Introductionmentioning

confidence: 99%

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Aliyu

Rani

Ginta

et al. 2017

Advances in Materials Science and Engineering

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Surface treatment remained a key solution to numerous problems of synthetic hard tissues. The basic methods of implant surface modification include various physical and chemical deposition techniques. However, most of these techniques have several drawbacks such as excessive cost and surface cracks and require very high sintering temperature. Additive mixed-electric discharge machining (AM-EDM) is an emerging technology which simultaneously acts as a machining and surface modification technique. Aside from the mere molds, dies, and tool fabrication, AM-EDM is materializing to finishing of automobiles and aerospace, nuclear, and biomedical components, through the concept of material migrations. The mechanism of material transfer by AM-EDM resembles electrophoretic deposition, whereby the additives in the AM-EDM dielectric fluids are melted and migrate to the machined surface, forming a mirror-like finishing characterized by extremely hard, nanostructured, and nanoporous layers. These layers promote the bone in-growth and strengthen the cell adhesion. Implant shaping and surface treatment through AM-EDM are becoming a key research focus in recent years. This paper reports and summarizes the current advancement of AM-EDM as a potential tool for orthopedic and dental implant fabrication. Towards the end of this paper, the current challenges and future research trends are highlighted.

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Section: Introductionmentioning

confidence: 99%

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Aliyu

Rani

Ginta

et al. 2017

Advances in Materials Science and Engineering

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“…These include abrasive water jet machining [18], ultrasonic machining [19], and laser machining [20,21]. Among these, abrasive water jet machining and ultrasonic machining partly destroy the materials due to the formation of brittle fractures, leading to reduced material strength [22]. As a non-contact processing technology, laser processing has a wider range of applications than other processing technologies, especially for hard and brittle materials, such as ceramics and ceramic matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mass Transfer Channels on Flexural Strength of C/SiC Composites Fabricated by Femtosecond Laser Assisted CVI Method with Optimized Laser Power

Wang

Cao

Liu

et al. 2020

Preprint

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In this work, femtosecond laser assisted-chemical vapor infiltration (LA-CVI) was employed to produce C/SiC composites with 1, 3, and 5 rows of mass transfer channels. The effects of laser machining power on the quality of produced holes were investigated. The results showed that the increase in power yielded complete hole structures. The as-obtained C/SiC composites with different mass transfer channels displayed higher densification degrees with flexural strengths reaching 546±15 MPa for row mass transfer channel of 3. The strengthening mechanism of the composites was linked to the increase in densification and formation of “dense band” during LA-CVI process. Multiphysics finite element simulations of the dense band and density gradient of LA-CVI C/SiC composites revealed C/SiC composites with improved densification and lower porosity due to the formation of “dense band” during LA-CVI process. In sum, LA-CVI method looks promising for future preparation of ceramic matrix composites with high densities.

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“…Zhang et al [5] have adopted a similar shaping approach for zirconium oxide ceramics. Besides improvements in fixed abrasive machining processes, other non-traditional or hybrid processes such as electrical-discharge machining [6], laser machining [7] and thermally…”

Section: Introductionmentioning

confidence: 99%

Improvements in Machinability of Zinc Oxide Ceramics by Laser-Assisted Milling

Muženič

Dugar

Kramar

et al. 2019

SV-JME

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In this paper, an attempt is made to advance the understanding of Laser-Assisted Milling (LAMill) of zinc oxide (ZnO) ceramics. A series of conventional milling and LAMill experiments with varying laser power were conducted to determine the effect of laser assistance on the machinability of this material. Improved machinability in terms of reduction in machined surface roughness and edge chipping was achieved by adjusting laser power. At an optimal laser power of 120 W, determined for the machining parameters used, R a and R z were reduced by 37 % and 46 %, respectively, while the average and maximum chipping widths were reduced by 15 % and 17 %, respectively.

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An overview of electric discharge machining of ceramics and ceramic based composites

Cited by 114 publications

References 111 publications

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Effect of Mass Transfer Channels on Flexural Strength of C/SiC Composites Fabricated by Femtosecond Laser Assisted CVI Method with Optimized Laser Power

Improvements in Machinability of Zinc Oxide Ceramics by Laser-Assisted Milling

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