Surface alteration of biomedical alloys by electrical discharge treatment for enhancing the electrochemical corrosion, tribological and biological performances

Mahajan, Anupama; Devgan, Sandeep; Sidhu, Sarabjeet Singh

doi:10.1016/j.surfcoat.2020.126583

Cited by 24 publications

(21 citation statements)

References 67 publications

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“…Because 𝑛 ∈ 𝑁 * and 𝑛 ≥ 3, only when 𝑚 = (3,4,6)， n can meet the requirements， and 𝑛 = (6,4,3). Therefore, if the inscribed regular polygons are assembled and connected without overlap, the basic geometric element must be regular triangles, squares, or regular hexagons.…”

Section: Establishment Of Geometric Model Of Multi-pulse Dischargementioning

confidence: 99%

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Prediction and analysis of EDM performances considering random multiple-pulse discharges based on geometric optimization modeling

Qin

Zhang

Zhou³

et al. 2022

Int J Adv Manuf Technol

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Continuous electrical discharge machining (EDM) is characterized by random discharge positions, uncertain discharge energy, extremely short discharge time, extremely narrow toolworkpiece gaps, etc. Theoretical research into the mechanisms leading to thermal erosion of material and the associated surface morphology has become urgent to allow the continued development and application of EDM technology. Firstly, multi-pulse theory and geometric optimization are utilized to derive an expression for the material removal rate and surface roughness in multi-pulse EDM.Secondly, Based on the characteristics of multi-pulse discharge, a multi-pulse numerical simulation model was established to predict the material removal volume, surface roughness and thickness of recast layer. Finally, the results predicted by the geometric and numerical models are compared with the experimental results. Experimentally, 0.176 mg of material is removed in the multi-pulse EDM; the theoretical calculation and numerical simulation of the same produce errors of 5.11% and 11.36%, respectively. The analogous results for the surface roughness are 1.623 μm, 8.93%, and 1.23%. The experimentally determined thickness of the recast layer was 5.31 μm, which corresponds to an error in the simulation error of 7.53%.

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Section: Establishment Of Geometric Model Of Multi-pulse Dischargementioning

confidence: 99%

“…Electrical discharge machining (EDM) uses low macroscopic force, can process all conductive materials, and offers facile control of the discharge energy [2]. It is thus one of the most widely used nontraditional processing technologies and is used, for example, in the fields of aerospace, medical equipment, and instrumentation [3].…”

Section: Introductionmentioning

confidence: 99%

Prediction and analysis of EDM performances considering random multiple-pulse discharges based on geometric optimization modeling

Qin

Zhang

Zhou³

et al. 2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Because ∈ * and ≥ 3, only when = (3,4,6)， n can meet the requirements， and = (6,4,3). Therefore, if the inscribed regular polygons are assembled and connected without overlap, the basic geometric element must be regular triangles, squares, or regular hexagons.…”

Section: Establishment Of Geometric Model Of Multi-pulse Dischargementioning

confidence: 99%

Prediction and analysis of EDM performances considering random multiple-pulse discharges based on geometric optimization modeling

Qin

Zhang

Zhou³

et al. 2021

Preprint

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Continuous electrical discharge machining (EDM) is characterized by random discharge positions, uncertain discharge energy, extremely short discharge time, extremely narrow tool-workpiece gaps, etc. Theoretical research into the mechanisms leading to thermal erosion of material and the associated surface morphology has become urgent to allow the continued development and application of EDM technology. Firstly, multi-pulse theory and geometric optimization are utilized to derive an expression for the material removal rate and surface roughness in multi-pulse EDM. Secondly, Based on the characteristics of multi-pulse discharge, a multi-pulse numerical simulation model was established to predict the material removal volume, surface roughness and thickness of recast layer. Finally, the results predicted by the geometric and numerical models are compared with the experimental results. Experimentally, 0.176 mg of material is removed in the multi-pulse EDM; the theoretical calculation and numerical simulation of the same produce errors of 5.11% and 11.36%, respectively. The analogous results for the surface roughness are 1.623 µm, 8.93%, and 1.23%. The experimentally determined thickness of the recast layer was 5.31 µm, which corresponds to an error in the simulation error of 7.53%.

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“…Titanium alloy has excellent biomechanical properties, outstanding formability and machinability, good corrosion resistance and favourable biocompatibility, which has been widely used in the field of artificial joint replacement [1]. However, due to the poor tribological properties of the titanium alloy surface, the wear debris generated by wear in the human body will seriously affect the service life of the artificial hip joint [2,3]. Therefore, it is crucial to develop artificial hip joints with high longevity and excellent tribological properties.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

Chen

Deng

et al. 2022

Coatings

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Laser cladding coating has many advantages in surface modification, such as a small heat-affected zone, and good metallurgical bonding. However, some serious problems such as pores, and poor forming quality still exist in the coating. To suppress these problems, a novel process of ultrasonic vibration-assisted laser cladding process was adopted to in-situ synthesize TiC/TiB composite ceramic coating on the surface of titanium alloy. Results showed that the introduction of ultrasonic vibration effectively improved the surface topography of the coating, reduced the number of pores in the coating, refined the crystal grains of the coating, decreased the residual tensile stress in the coating, and increased the micro-hardness of the coating. The tribological properties of the coating were significantly improved by the ultrasonic vibration, the wear resistance of the coating fabricated with ultrasonic vibration at power of 400 W increased about 1.2 times compared with the coating fabricated without ultrasonic vibration, and the friction coefficient decreased by 50%.

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Surface alteration of biomedical alloys by electrical discharge treatment for enhancing the electrochemical corrosion, tribological and biological performances

Cited by 24 publications

References 67 publications

Prediction and analysis of EDM performances considering random multiple-pulse discharges based on geometric optimization modeling

Prediction and analysis of EDM performances considering random multiple-pulse discharges based on geometric optimization modeling

Prediction and analysis of EDM performances considering random multiple-pulse discharges based on geometric optimization modeling

Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

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