A5045292223- Advanced materials and composites
- Metal and Thin Film Mechanics
- Metal Alloys Wear and Properties
- Tribology and Wear Analysis
- Powder Metallurgy Techniques and Materials
- Natural Fiber Reinforced Composites
- Advanced ceramic materials synthesis
- Electron and X-Ray Spectroscopy Techniques
- Boron and Carbon Nanomaterials Research
- Zeolite Catalysis and Synthesis
- Diamond and Carbon-based Materials Research
- Fire dynamics and safety research
- Chemistry Education and Research
- Electrodeposition and Electroless Coatings
- Aluminum Alloys Composites Properties
- Fiber-reinforced polymer composites
- Chemical and Physical Properties of Materials
- Advanced Surface Polishing Techniques
- Surface Modification and Superhydrophobicity
- Nanocomposite Films for Food Packaging
- Lubricants and Their Additives
- Material Properties and Processing
- Catalysis and Hydrodesulfurization Studies
- Graphene research and applications
- Injection Molding Process and Properties
Universidade Federal de Santa Catarina
2013-2022
Sintered iron-based self-lubricant composites in which graphite reservoirs are generated by the dissociation of silicon carbide (SiC) particles feature low friction coefficients and scuffing resistance combined with high mechanical stress. This work evaluated influence sintering temperature SiC polytype on morphology, structure, behaviour. The were studied field emission gun-scanning electron microscopy (FEG-SEM), micro-Raman spectroscopy, transmission (TEM). behaviour was cylinder plane...
The present work is focused on ferrous powder metallurgy and presents some results of a development suitable masteralloy for use as an additive to iron the production sintered steels. was produced by melting mixture containing approximately Fe + 20% Ni Mn Si 1% C (wt%), in order obtain cast billet that converted into fine crushing milling. It observed presence SiC after undesirable alloy. element should be introduced using ferrosilicon. Sintered alloys with distinct contents alloying...
Abstract In the development of dry self-lubricating composites, not only solid lubricant particle size and distribution are important, but also correct selection characteristics, which should be stable, i.e. reactive, during whole processing. this work, Fe+9 vol% h-BN composites were produced by uniaxial cold compaction sintering, for a reaction between iron was detected after sintering at 1,150°C. The phase characterized optical scanning electron microscopy identified X-ray diffraction...
The morphology, dimensions and chemical composition of tribolayers strongly depend on the pressures temperatures acting contact.They are formed by reactions between surfaces in contact with each other as well atmosphere, lubricants possible contaminants.In this paper influence test time (180, 500, 1000 2500 h) into formation characteristics pairs DLC-stainless steel tested under refrigerant gas R134a atmosphere without presence lubricating oil was analyzed.The characterization performed...
In order to obtain components with improved properties, several alternative techniques, based on plasma technology, have been studied. Surface porosity of plain iron could be modified by using sintering. this work, produced PM were sintered a reactor in the presence an abnormal glow discharge. Two samples particles different range size. One set full size powder (20-200 μm) mean diameter 100 μm. Another fractioned powder, particle fewer than 45 Studies carried out evaluate influence ion...
Biopacking material was obtained by incorporating tangerine peel extract (Citrus reticulata) in cellulose acetate (CA) film. The film with shown to have a homogeneous characteristic FTIR and DSC analysis, being reinforced MEV MFA, showed absence of pores the extract. These characteristics justify reduced water absorption release CA membrane Low is important for act as barrier external environment sufficient prevent growth strains investigated on sample surface. introduction also tensile...
Zeólitas Y são aluminossilicatos com ampla aplicação industrial devido às suas propriedades. O material zeolítico foi sintetizado utilizando como fonte principal de silício e alumínio um rejeito caulim previamente calcinado (metacaulim). processo síntese ocorreu em condições hidrotermais os efeitos das relações Si/Al Na/Al também foram considerados. partida as fases formadas produtos reação caracterizados por difração raios X, microscopia eletrônica varredura espectroscopia absorção na...
O etileno acetato de vinila (EVA) é um polímero utilizado na confecção materiais escolares, esportivos e no setor calçadista. Este gera resíduos, logo necessário a sua reutilização. Visando isso, o trabalho tem como objetivo estudar placas produzidas partir EVA/cimento isolante acústico desta forma dar destino este material. Neste sentido melhor mistura foi estudada. Com placa produzida foram investigadas suas características, para isto realizados os ensaios absorção água, acústica,...