Isostatic Pressing
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Effect of Processing Route on the Microstructure and Mechanical Properties of Hot Work Tool Steel
Powder metallurgy is a growing sector in industrial production, as it offers outstanding energy, cost and material savings in comparison with established processing routes such as casting. Hot work toll steels are usually produced by ingot metallurgy, but also by powder metallurgy, namely hot isostatic pressing and powder forging routes. In this paper we inv
Mat. Res.. Publicado em: 21/08/2017
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2. Effect of La 0.8 Sr 0.2 MnO 3 powder addition in the precursor solution on the properties of cathode films deposited by spray pyrolysis
ABSTRACT Films of lanthanum strontium manganite, LSM (La0.8Sr0.2MnO3) were deposited on yttria stabilized zirconia (YSZ) substrates by different methods aiming to establish the most suitable route to prepare cathodes for solid oxide fuel cells (SOFC). Samples were obtained by using a solution of lanthanum, strontium and manganese nitrates or a dispersion of
Matéria (Rio J.). Publicado em: 11/05/2017
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3. Estudos da sinterização de Bi12TiO20 (BTO) visando obter cerâmicas transparentes / Studies of sintering Bi12TiO20 (BTO) in order obtain transparent ceramics
This work presents the systematic results of studies concerning the sintering of the Bi12TiO20 (BTO) aiming the production of transparent ceramic samples. All that because the BTO is a material that has great scientific and technologic visibility due to its optical, electro and electro-optical properties, but still little explored as ceramic. The sintering s
Publicado em: 2011
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4. Project and manufacture of ceramic membranes way isostatic pressing and use of sucrose as porogenic agent for separation of vegetable oil/ water emulsions by tangential microfiltration / Projeto e manufatura de membranas cerâmicas via prensagem isostática para separação de emulsões óleo vegetal/água por microfiltração tangencial
Esta tese descreve o projeto e manufatura de membranas cerâmicas para separação de emulsões óleo/água. A escolha correta do material para a fabricação de membranas é importante para processos cujo desempenho depende da afinidade entre o meio poroso e o fluido. As condições de manufatura são também importantes, pois determinam a morfologia da mem
Publicado em: 2010
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5. Condutividade elétrica da solução sólida céria-zircônia dopada com ítrio e gadolínio / Electrical conductivity of solid solution ceria-zirconia doped yttria and gadolinium
Rare earth doped ceria has a great potential to be used as electrolyte in temperatures around 800 C in fuel cells due to its higher electrical conductivity than YSZ. However, the reduction of Ce+4 to Ce+3 in low oxygen partial pressure has introduced limitations for using doped ceria electrolyte due to electronic conduction. Among the several ceria solid sol
Publicado em: 2009
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6. Age-hardening of Ti-35Nb-7Zr-5Ta alloy for orthopaedic implants
Bone injuries and failures often require the inception of implant biomaterial. Research in this field has received increasing attention recently. In particular, porous metals are attractive due to its unique physical, mechanical, and new bone tissue ingrowth properties. The aim of this work is to investigate age hardening behavior of Ti-35Nb-7Zr-5Ta alloy pr
Materials Research. Publicado em: 2007-09
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7. ESTUDO DA CINÉTICA DE SINTERIZAÇÃO DO SISTEMA SnO2.ZnO
The polycrystalline ceramics study the base of SnO2 presents great interest due to the inherent properties of emiconductor, which allows the application in some types of components, such as, protective gas sensors, varistors, protects films for different refractory uses and for glasses fusion of heavy metals. The addition of ZnO to the SnO2, makes with that
Publicado em: 2007
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8. EFFECT OF HEAT TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF TOOL STEELS FOR COLD WORK APPLICATION / "Efeito do tratamento térmico na microestrutura e nas propriedades mecânicas de aços-ferramenta para trabalho a frio"
Tool steels have important participation in the worldwide market of steels. They are used by metal-mechanical industry as cutting tools, molds, punches, dies etc.Due to the use of great responsibility, it is important to discuss the relationship between microstructure and mechanical properties because it is a common practice in industry to specify heat treat
Publicado em: 2006
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9. Production of titanium alloys for advanced aerospace systems by powder metallurgy
Titanium alloys parts are ideally suited for advanced aerospace systems because of their unique combination of high specific strength at both room temperature and moderately elevated temperature, in addition to excellent corrosion resistance. Despite these features, use of titanium alloys in engines and airframes is limited by cost. The alloys processing by
Materials Research. Publicado em: 2005-12
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10. Production of a low young modulus titanium alloy by powder metallurgy
Titanium alloys have several advantages over ferrous and non-ferrous metallic materials, such as high strengthto-weight ratio and excellent corrosion resistance. A blended elemental titanium powder metallurgy process has been developed to offer low cost commercial products. The process employs hydride-dehydride (HDH) powders as raw material. In this work, re
Materials Research. Publicado em: 2005-12
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11. Transverse rupture strength of a PM tool steel
Powder Metallurgy has been reported as a suitable alternate processing route for the manufacture of tool steels. The advantage of this technique is in being able to obtain a refined and more uniform microstructure that improves properties such high wear resistance and toughness. A molybdenum containing AISI M3:2 tool steel, (trade name Sinter 23), manufactur
Materials Research. Publicado em: 2005-06
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12. Liga Ti-35Nb-5Ta-7Zr : microestrutura e propriedades mecanicas e de corrosão
The pure titanium and the titanium alIoys present interesting characteristics like high relation strength/weight, good corrosion resistance, and very good biocompatibility, that are very useful for implant applications. The pure titanium applieation is limited to applieations involving low mechanical solicitations. The purpose of this work is the fabrieation
Publicado em: 2004