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Avaliação da microestrutura, macroestrutura e microdureza ao adicionar carboneto de boro (B4C) em ligas Fe-Mn-Cr-Si
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilDepartamento Acadêmico de MecânicaEngenharia MecânicaUTFPR, 2013-11-25)
The cavitation mass loss of the turbine blades is a phenomenon that occurs in the most of the hydroelectric plants. The cavitation appears when the liquid form a difference of pressure along the blades which bump against ...
Stable Eutectoid Transformation in Nodular Cast Iron: Modeling and Validation
(Springer, 2017-01)
This paper presents a new microstructural model of the stable eutectoid transformation in a spheroidal cast iron. The model takes into account the nucleation and growth of ferrite grains and the growth of graphite spheroids. ...
Caracterização e análise macro e microestrutural de concretos fabricados com cimentos contendo escórias de alto-forno
(Universidade Federal de Minas GeraisUFMG, 2007-12-19)
The worldwide concern with the sustainable development has placed restrictions on the use of raw materials and on gas emissions in the atmosphere. In this scenario, the Brazilian cement industry has made significant changes ...
Inverse segregation during transient directional solidification of an Al-Sn alloy: Numerical and experimental analysis
(Elsevier Science SaLausanneSuíça, 2009)
Drying Accelerators to Enhance Processing and Properties: Ethanol, Isopropanol, Acetone and Acetic Acid as Pre-treatments to Convective Drying of Pumpkin
(SpringerBR, 2020-10-13)
ABSTRACT
Different drying accelerators were studied to improve vegetable drying: acetone (AC), ethanol (ET), isopropanol (ISO) and acetic acid (AA). Pre-treatments were performed by immersion of pumpkin cylinders. Convective ...
Synthesis and characterization of acrylamide/acrylic acid hydrogels crosslinked using a novel diacrylate of glycerol to produce multistructured materials
(2008)
In this work we propose a new crosslinking agent and the method to use it for the synthesis of acrylate based hydrogels. The use of this diacrylate of glycerol, synthesized in our laboratory, allows the generation of ...
Synthesis and characterization of acrylamide/acrylic acid hydrogels crosslinked using a novel diacrylate of glycerol to produce multistructured materials
(2008)
In this work we propose a new crosslinking agent and the method to use it for the synthesis of acrylate based hydrogels. The use of this diacrylate of glycerol, synthesized in our laboratory, allows the generation of ...
Corrosion and wear resistance of hypoeutectic Zn-Al alloys as a function of structural features
(Elsevier Science Sa, 2012-10)
The aim of the present research was to investigate the role of the type of grain macrostructure (columnar, columnar-to-equiaxed transition-CET -, and equiaxed) and microstructure (secondary dendrite arm spacing - λ 2) in ...
Estudo do efeito do modificador Al-Sr no tratamento de modificação do eutético da liga AA356
(Universidade Estadual Paulista (Unesp), 2012-12-17)
The AA356 alloy is an alloy widely used in the automotive industry and aerospace due to its excellent mechanical properties. Refining the structure of eutectic silicon aluminum alloys is a fairly common practice in the ...