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Composições elastoméricas reforçadas com fibras para o revestimento de superfícies metálicas
(2023-02-15)
The usage of elastomeric materials for pipeline coating realizes a technic to protect the metallic materials, mainly against abrasion wear. The rubber layer must be sufficiently resistant to friction caused by the passage ...
Influência do tempo de deposição e da pressão de base em intercamadas contendo silício: promovendo adesão de filmes finos de DLC sobre aço SAE 4140
(2023-05-13)
Diamond-like carbon (DLC) is an amorphous material widely used in coatings due to its wide range of properties of interest, such as high hardness, resistance to abrasion, chemical corrosion and wear while having low ...
Nitretação a plasma de aço inoxidável austenítico sinterizado AISI 316L com adição de ítria
(2023-03-29)
In this work, plasma nitriding of sintered 316L austenitic stainless steel was performed, with and without addition of yttria. The hollow cathode type configuration was used in the nitriding reactor. Initially varying the ...
Interações físico-químicas em nanotribologia: elucidação de mecanismos e controle do atrito em escala nanométrica
(2023-08-04)
The study of friction, wear, lubrication, and adhesion at the nanoscale forms nanotribology, an interdisciplinary area dedicated to understanding and promoting advances in the most diverse applications in which these ...
Efeitos relativísticos, equação de estado e transições de fase induzidas por altas pressões no aureto de césio
(2023-09-13)
Cesium auride (CsAu) is an intriguing compound formed by two metals that exhibits properties of both an ionic and a semiconductor salt. In this study, we employ computer simulations to explore the influence of relativistic ...
Compósitos baseados em PLA e ABS para impressão 3D de simuladores antropomórficos
(2023-09-15)
Additive manufacturing has been standing out for some years in both scientific and industrial fields. One of the 3D printing methods by material extrusion that stands out is the fused filament fabrication technique (FFF). ...
Pressure-induced second-order phase transition in fluorine
(2023-09-20)
The relative stability between the crystal structure of (alfa)-F2, space group C2/c, and a hypothesized highpressure phase, space group Cmce, was explored using Density Functional Theory at the PBE0+D3(ABC)/TZVP level of ...
Desenvolvimento de uma membrana verde à base de poli(vinil álcool) para a remoção de diclofenaco de sódio de matrizes aquosas
(2023-10-18)
Membrane separation processes are efficient to reduce water pollution by emerging contaminants, such as pharmaceuticals. In Brazil, as well as worldwide, the production of membranes still faces challenges concerning the ...
Avaliação da influência da mistura de elastômeros nas propriedades físico-químicas e mecânicas de formulações elastoméricas
(2023-11-07)
This study aimed to evaluate the influence of the mixture of different polymers such as natural rubber ((poly(cis-2-methyl-buta-1,4-diene)) (NR), styrene-butadiene copolymer (poly(buta 1,3-diene-co-styrene)) (SBR) and ...
Preparação e caracterização de filmes de látex de borracha natural contendo própolis vermelha e cobre para aplicações biomédicas
(2023-09-01)
Wound healing can be delayed due to resistance and tolerance to several topical antimicrobials that are often used for this purpose. In this context, the development of
dressings with materials that have angiogenic and ...