Fernando Humel Lafratta
Universidade do Estado de Santa Catarina
Glass transitionCuring (chemistry)Transmission electron microscopyComposite materialIndentation hardnessTribologyAtom probeDynamic modulusMetallurgyMaterials scienceYoung's modulusScanning electron microscopeSelective laser meltingMaraging steelDifferential scanning calorimetryThermogravimetryElastic modulusNanoindentationCarbon nanotubeThermal stabilityDynamic mechanical analysisOptical microscopePrecipitation (chemistry)Nanocomposite
3Publications
3H-index
73Citations
Publications 3
Newest
#1Sabrina Bodziak (UDESC: Universidade do Estado de Santa Catarina)H-Index: 2
#2Kassim S. Al-Rubaie (McMaster University)H-Index: 13
Last. Yimeng Chen (CAMECA)H-Index: 17
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Abstract This paper focuses on the precipitates found in the 300 grade maraging steel built by Selective Laser Melting (SLM), which is globally one of the fastest-growing Additive Manufacturing (AM) technology. The test samples were built layer by layer via full melting and rapid solidification of the deposited powder bed of 300 grade maraging steel, using an M2 Concept Laser machine. The samples were aged at 510 °C for 2 h, and then air-cooled. Optical microscopy, scanning electron microscopy, ...
25 CitationsSource
#2Carlos V. OpeltH-Index: 8
Last. Luiz A. F. Coelho (UDESC: Universidade do Estado de Santa Catarina)H-Index: 17
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In this study, the thermal, dynamic-mechanical and tribological behavior of nanocomposites of a photocurable epoxy-acrylate resin and multiwalled carbon nanotubes (MWCNT) are investigated. A route consisting of a combination of sonication, mechanical and magnetic stirring is used to disperse 0.25-0.75 wt. (%) MWCNT into the resin. Two photocuring cycles using 12 hours and 24 hours of UV-A radiation are studied. The storage modulus, the loss modulus and the tan delta are obtained by dynamic mecha...
9 CitationsSource
#1Marcos Nunes dos Santos (UDESC: Universidade do Estado de Santa Catarina)H-Index: 2
#2Carlos V. Opelt (UDESC: Universidade do Estado de Santa Catarina)H-Index: 8
Last. Luiz A. F. Coelho (UDESC: Universidade do Estado de Santa Catarina)H-Index: 17
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Abstract In this work, thermal and mechanical behaviors of nanocomposites of a photocurable epoxyacrylate resin and multiwalled carbon nanotubes (MWCNT) were investigated. A combination of sonication, and mechanical and magnetic stirring was used to disperse 0.25 wt% and 0.75 wt% of MWCNTs into the resin. Two photocuring cycles using 12 and 24 h UV-A radiation were studied. Nanoindentation was the chosen technique for characterizing the modulus of elasticity and hardness of samples. The curing d...
36 CitationsSource