Developments in Powder Mixed EDM and its perspective Application for targeted Surface Modification

Schubert, Andreas; Bui, Viet D.; Schaarschmidt, Ingo; Berger, Thomas; Martin, A.

doi:10.1016/j.procir.2022.09.134

Cited by 10 publications

(4 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental results indicated that the addition of 0.5 g/l graphite nanopowder to the electrolyte significantly improved the morphology of the machined surface, and the roughness of the machined surface decreased from Ra 0.830 µm to Ra 0.418 µm. Moreover, other studies (20)(21)(22)(23)(24) have demonstrated that the addition of powder can effectively improve the surface roughness of machined specimens.…”

Section: Introductionmentioning

confidence: 99%

Surface Quality Control of p-type Silicon Chip during Edge Insulation with Wire Electric Dischaarge Machining

Lee,

Peng,

Chen

et al. 2023

Sensors and Materials

View full text Add to dashboard Cite

Solar energy is one of the most widely used green energy sources, but the consumption of chemicals during the manufacturing of solar panels lowers the environmental value of this source. Therefore, in this study, we apply wire electrical discharge machining to the edge insulation process of solar cell chips to avoid the disadvantages of using chemical edge insulation and reduce the cost of waste liquid disposal. In addition, process parameters, such as servo voltage, feed rate, machining depth, discharge gap, droplet flow rate, and the concentration of abrasive powder added, are investigated to improve the surface roughness of specimens, as well as to remove the phosphorus layer and minimize cracks on the specimen surface. The experimental results indicate that the surface roughness of silicon chips can be reduced from 0.614 to 0.365 µm using deionized water with a droplet flow rate of 12 cc/min at the servo voltage of 30 V, which resulted in a 40% improvement in the surface roughness of silicon chips. The addition of 0.6 g/l SiC to deionized water further reduced the surface roughness to 0.304 µm, which represented a 10% improvement over the value achieved with pure deionized water. This means that the need for a chemical post-treatment process can be reduced while maintaining the surface quality of the specimen and ensuring environmental protection. At the same time, the removal of the phosphorus layer and cracks in one single process pass demonstrates that wire electric discharge machining can be used efficiently for wafer edge insulation.

show abstract

Section: Introductionmentioning

confidence: 99%

Surface Quality Control of p-type Silicon Chip during Edge Insulation with Wire Electric Dischaarge Machining

Lee,

Peng,

Chen

et al. 2023

Sensors and Materials

View full text Add to dashboard Cite

show abstract

“…Further encouraging in vitro cytocompatibility as well as ZnO and TiO observations in X-ray diffraction are later biological and therapeutic tests that confirm the predicted antiviral efficacy of the modified Ti-6Al-4V alloy surface against coronavirus (COVID-19). Schubert et al [19], studied the surface modification of Ti-6Al-4V surface using nano silver powder in dielectric fluid by PM-EDM operation. The distribution of powder particles in the machining gap is largely dependent on the dielectric flow, and this has a large impact on the powder deposition onto the modified surface.…”

Section: Introductionmentioning

confidence: 99%

“…Also, there are no researchers who added silver powder in the PM-EDM process for surface modification of Ti-35Nb-7Zr-5Ta alloy. Silver powder in PM-EDM for surface modification but for Ti-6Al-4V alloy was used [19]. Thus, surface modification was done in this research for the Ti-35Nb-7Zr-5Ta alloy prepared by powder metallurgy using silver powder mixed EDM with proper evaluation for biocompatibility before and after the modification.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of the Ti-35Nb-7Zr-5Ta Bio Alloy by the PM-EDM Route

Hayyawi,

Al-Ethari,

Hubi Haleem

2024

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

One of the most attractive β-Ti alloys is Ti-35Nb-7Zr-5Ta wt% (TNZT) alloy, which has one of the lowest Young's moduli among the β-Ti family (about 55 GPa) and contains no cytotoxic elements. On the other hand, the β-type Ti alloys are susceptible to bacterial infection because they lack an antibacterial function and can become contaminated quickly after implantation, making surface modification a keyway to improve the antibacterial properties of these alloys. A recently created technique called powder mixed-EDM can simultaneously improve machining, mechanical, and biological properties. In this research, silver was added to the dielectric fluid during PM-EDM of Ti-35Nb-7Zr-5Ta wt% alloy prepared by powder metallurgy route. The surface composition, Brinell hardness, corrosion resistance, ion release, and antibacterial properties were evaluated for the TNZT alloy before and after surface modification. The results show better hardness and corrosion resistance as well as lower ion release for the PM-EDMed specimen due to the presence of Ag, oxides, and carbides such as NbC, TiC, TiO 2 , ZrO 2, and Nb 2 O 5 that is deposited and embedded as a hard phase in the recast layer of the machined surface. Also, the antibacterial property of the PM-EDMed specimen is effectively improved as silver is an antibiotic with a wide range, so it has favorable antibacterial properties for Gram-negative and Gram-positive bacteria.

show abstract

“…Powder metallurgy has proven to be a reliable method for manufacturing net-shape components, which requires less machining and leads to higher production rates, ultimately reducing total costs [7]. Due to their high-performance mechanical structures, they find applications in thermomechanical scenarios that require customized magnetic and electrical properties [8].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Thermal and Mechanical Properties of Epoxy Resin/Aluminum Nanoparticle Composites

Pinto,

Ueno

et al. 2023

J. Mater. Sci. Technol. Res.

View full text Add to dashboard Cite

In this study, we explored the development of epoxy resin nanocomposites with 0.1, 0.3%, and 1.0% by weight of aluminum nanoparticles. These nanocomposites were evaluated for mechanical properties (tensile test and Izod strength test) and thermal properties (differential scanning calorimetry and thermogravimetric analyses), and their morphology was assessed using field emission gun scanning electron microscopy. Adding even small amounts of aluminum nanoparticles led to notable improvements in the mechanical and thermal resistance. Remarkably, composites with 1.0 wt% of aluminum nanoparticles presented a 25% increase in the elastic modulus, a 20 °C increase in the glass transition temperature, and a 30 °C increase in the degradation temperature. These findings hold significant promise for advancing the field of polymer-metal nanocomposites.

show abstract

Developments in Powder Mixed EDM and its perspective Application for targeted Surface Modification

Cited by 10 publications

References 77 publications

Surface Quality Control of p-type Silicon Chip during Edge Insulation with Wire Electric Dischaarge Machining

Surface Quality Control of p-type Silicon Chip during Edge Insulation with Wire Electric Dischaarge Machining

Surface Modification of the Ti-35Nb-7Zr-5Ta Bio Alloy by the PM-EDM Route

Evaluation of Thermal and Mechanical Properties of Epoxy Resin/Aluminum Nanoparticle Composites

Contact Info

Product

Resources

About