Surface modification of β-type titanium with multi-walled CNTs/ μ-HAp powder mixed Electro Discharge Treatment process

Devgan, Sandeep; Sidhu, Sarabjeet Singh

doi:10.1016/j.matchemphys.2019.122005

Cited by 28 publications

(12 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Copper HAp Wear resistant increased by 82% with increasing HA powder concentration. [154] Graphite HAp/CNT Surface integrity improved while applying a higher current [72] Pure Ti HAp A coating thickness of 9 µm with microcracks, three times higher microhardness, and Ca:P of 13 were obtained with a lower addition of HA powder.…”

Section: Ti Alloysmentioning

confidence: 99%

“…The HAp-based coating requirements approved by the FDA, USA are summarized in Table 3. The addition of HAp in the EDM process has been reported to improve the coating properties, hardness, and wear and corrosion resistance of the modified biomaterial [9,56,[70][71][72]. For instance, Chander et al [70] confirmed the formation of oxide and carbide alloys on the modified Ti-based alloy through the HAp mixed-EDM method, which enhanced the coating thickness, microhardness, and corrosion behavior of the treated biomaterial.…”

Section: Hap and Its Influence On The Response Of Machined Biomaterialsmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of Coatings, Corrosion and Wear Characteristics of Machined Biomaterials through Hydroxyapatite Mixed-EDM Process: A Review

et al. 2021

View full text Add to dashboard Cite

Together, 316L steel, magnesium-alloy, Ni-Ti, titanium-alloy, and cobalt-alloy are commonly employed biomaterials for biomedical applications due to their excellent mechanical characteristics and resistance to corrosion, even though at times they can be incompatible with the body. This is attributed to their poor biofunction, whereby they tend to release contaminants from their attenuated surfaces. Coating of the surface is therefore required to mitigate the release of contaminants. The coating of biomaterials can be achieved through either physical or chemical deposition techniques. However, a newly developed manufacturing process, known as powder mixed-electro discharge machining (PM-EDM), is enabling these biomaterials to be concurrently machined and coated. Thermoelectrical processes allow the migration and removal of the materials from the machined surface caused by melting and chemical reactions during the machining. Hydroxyapatite powder (HAp), yielding Ca, P, and O, is widely used to form biocompatible coatings. The HAp added-EDM process has been reported to significantly improve the coating properties, corrosion, and wear resistance, and biofunctions of biomaterials. This article extensively explores the current development of bio-coatings and the wear and corrosion characteristics of biomaterials through the HAp mixed-EDM process, including the importance of these for biomaterial performance. This review presents a comparative analysis of machined surface properties using the existing deposition methods and the EDM technique employing HAp. The dominance of the process factors over the performance is discussed thoroughly. This study also discusses challenges and areas for future research.

show abstract

Section: Ti Alloysmentioning

confidence: 99%

Section: Hap and Its Influence On The Response Of Machined Biomaterialsmentioning

confidence: 99%

Investigation of Coatings, Corrosion and Wear Characteristics of Machined Biomaterials through Hydroxyapatite Mixed-EDM Process: A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The input process parameters namely pulse-on-time, pulse-off-time, current, dielectric medium, spark gap voltage, type of electrode and polarity (negative or positive) play a momentous role in the machining of diverse materials [ 8 , 9 ]. The optimum set of these machining performance parameters has promisingly enhanced the material removal rate and efficiently improves the surface properties [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Characterization and Tribological Performance Analysis of Electric Discharge Machined Duplex Stainless Steel

et al. 2020

Self Cite

View full text Add to dashboard Cite

The present article focused on the surface characterization of electric discharge machined duplex stainless steel (DSS-2205) alloy with three variants of electrode material (Graphite, Copper-Tungsten and Tungsten electrodes). Experimentation was executed as per Taguchi L18 orthogonal array to inspect the influence of electric discharge machining (EDM) parameters on the material removal rate and surface roughness. The results revealed that the discharge current (contribution: 45.10%), dielectric medium (contribution: 18.24%) majorly affects the material removal rate, whereas electrode material (contribution: 38.72%), pulse-on-time (contribution: 26.11%) were the significant parameters affecting the surface roughness. The machined surface at high spark energy in EDM oil portrayed porosity, oxides formation, and intermetallic compounds. Moreover, a pin-on-disc wear analysis was executed and the machined surface exhibits 70% superior wear resistance compared to the un-machined sample. The surface thus produced also exhibited improved surface wettability responses. The outcomes depict that EDMed DSS alloy can be considered in the different biomedical and industrial applications.

show abstract

“…The formation of the nanoporous coating of about 27.2 µm thick appeared, firmly adhered to adhesive failure at 132 N. A significant rise in cell viability was also shown. In [169], the surface modification of the β-type titanium substrate was made by EDT to incorporate MWCNTs and µ-hydroxyapatite (µHAp) powders in the dielectric medium to promote cell proliferation.…”

Section: Electro-discharge Methods (Edm)mentioning

confidence: 99%

Electrodeposited Biocoatings, Their Properties and Fabrication Technologies: A Review

Zieliński¹,

Bartmański²

2020

Coatings

View full text Add to dashboard Cite

Coatings deposited under an electric field are applied for the surface modification of biomaterials. This review is aimed to characterize the state-of-art in this area with an emphasis on the advantages and disadvantages of used methods, process determinants, and properties of coatings. Over 170 articles, published mainly during the last ten years, were chosen, and reviewed as the most representative. The most recent developments of metallic, ceramic, polymer, and composite electrodeposited coatings are described focusing on their microstructure and properties. The direct cathodic electrodeposition, pulse cathodic deposition, electrophoretic deposition, plasma electrochemical oxidation in electrolytes rich in phosphates and calcium ions, electro-spark, and electro-discharge methods are characterized. The effects of electrolyte composition, potential and current, pH, and temperature are discussed. The review demonstrates that the most popular are direct and pulse cathodic electrodeposition and electrophoretic deposition. The research is mainly aimed to introduce new coatings rather than to investigate the effects of process parameters on the properties of deposits. So far tests aim to enhance bioactivity, mechanical strength and adhesion, antibacterial efficiency, and to a lesser extent the corrosion resistance.

show abstract

Surface modification of β-type titanium with multi-walled CNTs/ μ-HAp powder mixed Electro Discharge Treatment process

Cited by 28 publications

References 32 publications

Investigation of Coatings, Corrosion and Wear Characteristics of Machined Biomaterials through Hydroxyapatite Mixed-EDM Process: A Review

Investigation of Coatings, Corrosion and Wear Characteristics of Machined Biomaterials through Hydroxyapatite Mixed-EDM Process: A Review

Surface Characterization and Tribological Performance Analysis of Electric Discharge Machined Duplex Stainless Steel

Electrodeposited Biocoatings, Their Properties and Fabrication Technologies: A Review

Contact Info

Product

Resources

About