A5012065775- Diamond and Carbon-based Materials Research
- Carbon Nanotubes in Composites
- Graphene research and applications
- Adhesion, Friction, and Surface Interactions
- Tribology and Lubrication Engineering
- Welding Techniques and Residual Stresses
- Hydrogen embrittlement and corrosion behaviors in metals
- Metal and Thin Film Mechanics
- Characterization and Applications of Magnetic Nanoparticles
- Tribology and Wear Analysis
- Surface Roughness and Optical Measurements
- Graphite, nuclear technology, radiation studies
- Nanofluid Flow and Heat Transfer
- Advancements in Battery Materials
- Microstructure and Mechanical Properties of Steels
- Magnetic properties of thin films
- Laser-Ablation Synthesis of Nanoparticles
- Lubricants and Their Additives
- Plant Surface Properties and Treatments
- Electrical Contact Performance and Analysis
- Magnetic Properties of Alloys
- Supercapacitor Materials and Fabrication
- Force Microscopy Techniques and Applications
- Thermal properties of materials
Saarland University
2012-2017
Universidade Federal do Espírito Santo
2017
Universidade Federal de São Carlos
2009-2011
The use of lubricants (solid or liquid) is a well-known and suitable approach to reduce friction wear moving machine components. Another possibility influence the tribological behaviour formation well-defined surface topographies such as dimples, bumps lattice-like pattern geometries by laser texturing. However, both methods are limited in their effect: textures may be gradually destroyed plastic deformation removed from contact area, therefore no longer properly protecting contacting...
Fine-tuned localised laser heating of pristine or mechanically dispersed (for composite processing) SWCNTs resulting in precision healing and purification.
The transition toward an electricity‐driven world is testing electrical contact materials to their limits. Specifically, new alternatives are needed where composites that sacrificed conductivity in exchange for reduced weldability and higher heat dissipation sufficed. Carbon nanotubes (CNT) have the potential close gap as ideal fillers due outstanding intrinsic properties, pushing application limits further. However, reported measurements show no clear tendency. In present study, authors...
Abstract The wetting properties of 100Cr6 bearing steel surfaces modified using laser interference metallurgy (LIMET) are analyzed. structured with line‐like patterns line‐spacing. topography the ridged surface is analyzed by means white light interferometry and scanning electron microscopy chemistry different topographic regions Raman spectroscopy. Contact angle (CA) measurements performed on non‐irradiated surfaces, bi‐distilled water FVA2 industrial oil. angles measured parallel...
We report the chemical synthesis route, structural characterization, and physical properties of nanofluid magnetic graphite (NFMG) obtained from previously synthesized bulk organic (MG) by stabilizing aqueous ferrofluid suspension with an addition active cationic surfactant. The measured magnetization-field hysteresis curves along temperature dependence magnetization confirmed room-temperature ferromagnetism in both MG NFMG samples.
In addition to the double phase transition (with Curie temperatures TC=300 K and TCt=144 K), a low-temperature anomaly in dependence of magnetization is observed bulk magnetic graphite (MG) an average granular size L≃10 nm), which attributed manifestation effects below quantum temperature TL∝ℏ2/L2 well fitted by periodic function ML(T)∝sin[M(T)Λ(T)/L] with M(T) being Λ(T)∝ℏ/T thermal de Broglie wavelength. The best fits high-temperature data (using mean-field Curie–Weiss Bloch expressions)...
Electrical resistance and hydrogen adsorption of laser-annealed single-wall carbon nanotube mats.
From waste to single-wall carbon nanotubes and silica nanowires: the first high-tech outlet for FC3R.
We report on unusual magnetic properties observed for nanofluid room temperature ferromagnetic graphite (with an average particle size of [Formula: see text] nm). More precisely, the measured magnetization exhibits a low anomaly (attributed to manifestation finite effects below quantum text]) as well pronounced oscillations above T = 50 K hard-sphere type pair correlations between particles in nanofluid).
O foco deste trabalho é o estudo do material candidato a revestimento externo dos receptáculos de contenção para transporte substâncias que sejam fontes alta radioatividade, em especial 99Mo, cadeia produtiva associada as indústrias radiofarmacêuticas. Em relatamos os efeitos processos soldagem TIG e tratamento térmico na difusividade térmica amostras um aço inoxidável duplex UNS S32304, faz-se necessário conhecimento das propriedades desse frente ao processo fabricação com propósito atender...