Rogério Valentim Gelamo
YOU?
Author Swipe
View article: Dimensional and Surface Quality Evaluation of Inconel 718 Alloy After Grinding with Environmentally Friendly Cooling-Lubrication Technique and Graphene Enriched Cutting Fluid
Dimensional and Surface Quality Evaluation of Inconel 718 Alloy After Grinding with Environmentally Friendly Cooling-Lubrication Technique and Graphene Enriched Cutting Fluid Open
Properly refrigerating hard-to-cut alloys during grinding is key to achieve high quality, strict tolerances, and good surface finishing. Nonetheless, literature about the influence of cooling-lubrication conditions (CLCs) on dimensional ac…
View article: Advances in Enhancing the Wear Performance of Ti-6Al-4V Biomedical Alloy Through Nb2O5 Coating
Advances in Enhancing the Wear Performance of Ti-6Al-4V Biomedical Alloy Through Nb2O5 Coating Open
The Ti-6Al-4V alloy is widely used in orthopedic and dental implants due to its excellent mechanical, corrosion, and biological properties. However, it exhibits several limitations that can compromise its performance in clinical applicatio…
View article: Electrochemical Determination of Dipyrone Using a Cold-Plasma-Treated Graphite Sheet Electrode
Electrochemical Determination of Dipyrone Using a Cold-Plasma-Treated Graphite Sheet Electrode Open
The development of fast, reliable, and cost-effective techniques for pharmaceutical compound analysis is an issue of paramount importance to the pharmaceutical industry, environmental sciences, and many other applications. In this work, a …
View article: Enhancing the Wear Performance of 316L Stainless Steel with Nb2O5 Coatings Deposited via DC Sputtering at Room Temperature under Varied Environmental Conditions
Enhancing the Wear Performance of 316L Stainless Steel with Nb2O5 Coatings Deposited via DC Sputtering at Room Temperature under Varied Environmental Conditions Open
Niobium-based oxides have garnered increased attention in recent years for their remarkable enhancement of corrosion resistance, as well as biofunctional properties of various metallic materials, including 316L SS. However, the mechanical …
View article: Fabrication of Low-Cost Miniaturized Gas Cells via SLA 3D-Printing for UV-Based Gas Sensors
Fabrication of Low-Cost Miniaturized Gas Cells via SLA 3D-Printing for UV-Based Gas Sensors Open
The use of 3D-printing technology for producing optical devices (i.e., mirrors and waveguides) remains challenging, especially in the UV spectral regime. Gas sensors based on absorbance measurements in the UV region are suitable for determ…
View article: Study of influence of iron, phosphorus, potassium, tantalum and fluorine on the properties of TiNb2O7
Study of influence of iron, phosphorus, potassium, tantalum and fluorine on the properties of TiNb2O7 Open
Recently, niobium-based oxides have attracted increasing interest as a potential choice for lithium-ion battery technology. The mixed oxide of niobium and titanium, in the composition of TiNb2O7, has been considered a promising candidate f…
View article: Carbon-Graphene hybrid supporting Platinum-Tin electrocatalyst to enhance ethanol oxidation reaction
Carbon-Graphene hybrid supporting Platinum-Tin electrocatalyst to enhance ethanol oxidation reaction Open
Direct ethanol fuel cell (DEFC) is promising source for mobile and portable applications, but the electrocatalysts are based on metal noble alloys or doping elements to minimize the incomplete ethanol oxidation and poisoning effect. While …
View article: New approaches regarding the electrochemical behaviour of the Ti-6Al-4V alloy functionalized with antimicrobial peptide JI-2 via plasma polymerization
New approaches regarding the electrochemical behaviour of the Ti-6Al-4V alloy functionalized with antimicrobial peptide JI-2 via plasma polymerization Open
Ti-6Al-4V alloy is widely used in the biomedical sector due to its excellent biocompatibility, corrosion resistance, and mechanical properties. However, the use of this material as an implant is still susceptible to failure due to bacteria…
View article: Effect of Nb2O5 coating on the corrosion resistance of the 7050-T7451 aluminium alloy
Effect of Nb2O5 coating on the corrosion resistance of the 7050-T7451 aluminium alloy Open
The aircraft industry has been searching for new materials to be used in their aircrafts, which provide good mechanical and corrosive properties. The 7xxx series aluminium alloys are widely used in structural components. However, these all…
View article: Exploring the functionalization of Ti-6Al-4V alloy with the novel antimicrobial peptide JIChis-2 via plasma polymerization
Exploring the functionalization of Ti-6Al-4V alloy with the novel antimicrobial peptide JIChis-2 via plasma polymerization Open
This study aimed to characterize the immobilization of the novel JIChis-2 peptide on the Ti-6Al-4V alloy, widely used in the biomedical sector. The antimicrobial activity of JIChis-2 was evaluated in the Gram-negative bacterium E. coli. It…
View article: The Potentialities of Raman and XPS Techniques to Evaluate the Corrosion Products Formed on the 2198-T851 Aluminium Alloy Exposed to Sodium Chloride Solution
The Potentialities of Raman and XPS Techniques to Evaluate the Corrosion Products Formed on the 2198-T851 Aluminium Alloy Exposed to Sodium Chloride Solution Open
The aerospace industry is constantly looking for innovative materials that exhibit good mechanical and corrosion properties. The 2198-T851 (Al-Cu-Li) alloy was developed to replace the conventional Al-Cu-Mg in aircraft structures. Despite …
View article: Influence of Reactive Sputtering-Deposited Nb2O5 Coating On the Ti-6Al-4V Alloy Surfaces: Biomineralization, Antibacterial Activity, and Cell Viability Tests
Influence of Reactive Sputtering-Deposited Nb2O5 Coating On the Ti-6Al-4V Alloy Surfaces: Biomineralization, Antibacterial Activity, and Cell Viability Tests Open
Biomedical engineering has been constantly looking for the development of new materials that have bioactive surfaces and that are responsible for new bone formation, induce osteoblast differentiation and present antibacterial properties. H…
View article: Development of a Low-Cost Ball-on-Flat Linear Reciprocating Apparatus: Test Validation Using Ti-6Al-4V and Ti-6Al-4V/Nb2O5 Coatings
Development of a Low-Cost Ball-on-Flat Linear Reciprocating Apparatus: Test Validation Using Ti-6Al-4V and Ti-6Al-4V/Nb2O5 Coatings Open
This work aims to propose the development of a low-cost ball-on-flat linear reciprocating apparatus that can have the same attributes of extremely expensive equipment available on the market. For this purpose, the device was constructed fo…
View article: Electrochemical Sensors and Biosensors: Their Basic Working Principles and Some Applications
Electrochemical Sensors and Biosensors: Their Basic Working Principles and Some Applications Open
Electrochemical sensors are a class of devices in which the transducer component is the electrode.These devices are often seen as an effective tool for studying chemical and biological systems.This work offers an overview of electrochemica…
View article: Improvements of the MQL Cooling-Lubrication Condition by the Addition of Multilayer Graphene Platelets in Peripheral Grinding of SAE 52100 Steel
Improvements of the MQL Cooling-Lubrication Condition by the Addition of Multilayer Graphene Platelets in Peripheral Grinding of SAE 52100 Steel Open
In most grinding processes, the use of cutting fluid is required, and research has been carried out to reduce the amount of fluid used due to costs and environmental impacts. However, such a reduction of fluid can result in thermal damage …
View article: Effect of Graphene Addition in Cutting Fluids Applied by MQL in End Milling of AISI 1045 Steel
Effect of Graphene Addition in Cutting Fluids Applied by MQL in End Milling of AISI 1045 Steel Open
The cutting fluids applied to the machining processes by the MQL process aim to reduce the machining temperatures and tool wear as well as improve the surface and dimensional finishing of the parts. To increase the efficiency of these flui…
View article: A New View of a:C-H-coated Ti-6Al-4V Alloy to be Used as Orthopedic Implants: Influence of Surface Free-energy of Interaction on the Biological Responses
A New View of a:C-H-coated Ti-6Al-4V Alloy to be Used as Orthopedic Implants: Influence of Surface Free-energy of Interaction on the Biological Responses Open
In a previous published work, the Ti-6Al-4V alloy were functionalized by using plasma enhanced chemical vapour deposition (PECVD) process in order to obtain hydrogenated amorphous carbon (a:C-H) on the biomaterial's surface. At the time, w…
View article: New insights of Nb2O5-based coatings on the 316L SS surfaces: enhanced biological responses
New insights of Nb2O5-based coatings on the 316L SS surfaces: enhanced biological responses Open
This communication aims to propose new insights of Nb 2 O 5 -based coatings on the 316L SS surface with great prospects to be used in the dentistry field as brackets. The Nb 2 O 5 thin film was incorporated into the 316L SS by using PVD me…
View article: Improved electrochemical performance of pyrolytic graphite paper: Electrochemical versus reactive cold-plasma activation
Improved electrochemical performance of pyrolytic graphite paper: Electrochemical versus reactive cold-plasma activation Open
Flexible pyrolytic graphite sheets or graphite paper (GP) are a promising source of disposable (low-cost) electrochemical sensors. This work demonstrates the improvement in the electrochemical performance of graphite paper either after a s…
View article: Influence of DLC Film Deposition on the Corrosion and Micro-abrasive Wear Tests of the 2524-T3 Al Alloy
Influence of DLC Film Deposition on the Corrosion and Micro-abrasive Wear Tests of the 2524-T3 Al Alloy Open
The 2524-T3 aluminium (Al) alloy produced by ALCOA may be used as skin material by the aircraft industry. Some studies are available in the literature about fatigue and fatigue - corrosion behaviour of 2524-T3 Al alloy. However, the corros…