Coating Engineering
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Performance and Surface Integrity of Wire Electrical Discharge Machining of Thin Ti6al4v Plate Using Coated and Uncoated Wires
Wire Electrical Discharge Machining (WEDM) is one of the most important production technologies to manufacture very accurate small components and tools on any electrical conductive material. Titanium and its alloys have been widely used in automobile and aerospace industry as well as in medical engineering field. Small components and tools with complex geome
Mat. Res.. Publicado em: 03/06/2019
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2. Multiobjective and Multicase Optimization of a Spacecraft Radiator
ABSTRACT Optimization is now an established tool for obtaining better solutions in engineering design. Nevertheless, the multiplicity of possible applications and the continuing search for better computational performance has motivated researchers in continuing to propose new methods, as well as improvements on existing ones. Not only optimization has allowe
J. Aerosp. Technol. Manag.. Publicado em: 07/01/2019
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3. Effects of Different Plasma Nitrided Layers on the Tribological Performance of DLC Coatings
When multifunctional surface engineering processes that combine purpose-oriented phases are applied to soft substrates, a combination of high wear resistance, high load support and low coefficients of friction can be achieved. In this study, the effects of different nitrided layers on the tribological behaviour of a diamond-like carbon (DLC) film deposited o
Mat. Res.. Publicado em: 12/09/2016
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4. Preparação e Caracterização de Pós e Filmes De PbTiO3 obtidos pelo Método Pechini / Preparation and Characterization of Powders and Films From PbTiO3 obtained by Pechini method
Non-crystalline materials, commonly referred to as amorphous materials have attracted great interest in engineering and technology. This is due mainly to its photoluminescent properties at room temperature around 25 C. The aim of this study was the Pechini method in order to obtain ceramic powders and amorphous films of amorphous lead titanate. The lead tita
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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5. Synthesis and characterization of nanocrystalline hydroxyapatite gel and its application as scaffold aggregation
The sol-gel process is a technique used to synthesize materials from colloidal suspensions and, therefore, is suitable for preparing materials in the nanoscale. In this work hydroxyapatite was used due to its known properties in tissue engineering. Hydroxyapatite Ca10(PO4)6(OH)2 is a bioactive ceramic which is found in the mineral phase of bone tissue and is
Mat. Res.. Publicado em: 02/10/2012
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6. Simulação computacional em camisas de motor construídas em liga de alumínio silício
Automotive cylinder liners are mechanical components with the function of internal coating of the cylinder automotive engines. The liners have been made of cast iron, which meets the necessary requirements. The replacement of parts made of steel/ cast iron in aluminum alloys has been made with advantages not only in reducing weight as well as fuel consumptio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2011
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7. Investigação sobr o uso da texturização a laser na preparação da superficie a ser recoberta em ferramentas de metal duro para fresamento / Research on the use of laser texturing for the surface preparation of to be coated carbide milling tools
Machining is one of the fundamental manufacturing processes of contemporary industry and coated cemented carbide is the most used cutting tool material. Manufacturing of this kind of tools includes the substrate surface processing previously to coating deposition in order to achieve high adhesion resistance in the substrate-coating interface. The most spread
Publicado em: 2009
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8. Performance of differents coatings on high speed steel broachs / Desempenho de diferentes revestimentos em brochas de aço rapido
O aco rapido e um material que apresenta elevada resistencia ao desgaste e elevada dureza a quente, tendo grande aplicacao na construcao de ferramentas de dimensoes e formas complexas, tais como brochas. O presente trabalho avaliou a utilizacao de coberturas de materiais mais resistentes ao desgaste em brochas de aco rapido no brochamento interno de perfil,
Publicado em: 2009
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9. Propriedades superficiais do aço AISI H13 após tratamento duplex (nitretação e (TiAIN) para moldes de injeção de alumínio
The hot-work steel AISI H13 is the most used to make molds in aluminum injection. Many studies have been made to increase its lifetime. One promising method is the duplex treatment, where the mold is submitted to a heat treatment, nitriding and coating deposition. The current work uses the titanium aluminum nitride (TiAlN). The influence of the nitrated laye
Publicado em: 2007
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10. IONIZING RADIATION EFFECT STUDY BY ELECTRON BEAM ON ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE VIRGIN AND RECYCLED INDUSTRIAL / "Estudo do efeito da radiação ionizante por feixe de elétrons sobre o polietileno de ultra alto peso molecular virgem e reciclado industrial"
Ultra High Molecular Weight Polyethylene (UHMWPE) is an engineering plastic which has several applications, chiefly, in specific areas of the industry and medicine. UHMWPE can be even for other applications such as: port fenders, current guide, bucket coating, silos and gutters, plugs, pulleys and surgical prosthesis. This range of applications is due to the
Publicado em: 2006
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11. Plaster recycled production from waste and residues originating from a building site. Urban Engineering, Master Degree / Produção de gesso reciclado a partir de resíduos oriundos da construção civil.
Comparado com outros ligantes como cimento Portland e mesmo cal, o gesso apresenta muito maior eficiência energética, visto que pode ser obtido em temperaturas inferiores a 160C. No seu processamento, ele lança na atmosfera vapor dágua, contrariamente aos dois primeiros produtos citados que emitem CO2 no seu processo de fabricação. No entanto, sendo um
Publicado em: 2006
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12. Obtenção de revestimentos dúplex por nitretação a plasma e PVD-TiN em aços ferramenta AISI D2 e AISI H13. / Duplex coatings on AISI H13 and AISI D2 tool steels by using plasma nitriding and TiN-PVD.
In this work, the influence of both the microstructure and the load-bearing capacity of nitrided layers, formed on top of AISI D2 and AISI H13 tool steels, on adhesion and wear resistance of PVD-TiN coatings was studied. The threshold nitriding potential curves for the above mentioned steels and the optimum conditions of the pre-treatments which increased th
Publicado em: 2003