Conventional Sintering
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. Additive manufacturing of titanium alloy could modify the pathogenic microbial profile: an in vitro study
Abstract Additive manufacturing (AM) is an emerging process for biomaterials and medical devices. Direct Laser Metal Sintering (DLMS) is an AM technique used to fabricate Ti–6Al–4V implant materials with enhanced surface-related properties compared with wrought samples; thus, this technique could influence microbial adsorption and colonization. Therefore
Braz. oral res.. Publicado em: 30/09/2019
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2. Semi-solid Sintering of Ti6Al4V/CoCrMo Composites for Biomedical Applications
A composite of Ti6Al4V reinforced with CoCrMo particles is fabricated by conventional powder metallurgy and semi-solid sintering. Composites are fabricated by mixing 20% wt. of CoCrMo reinforcing particles into the Ti6Al4V matrix. Sintering is studied by dilatometry tests between 1050 and 1130 °C and compact characterization is performed by SEM and XRD. Mic
Mat. Res.. Publicado em: 31/01/2019
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3. Densification and microstructure of Si3N4-TiN ceramic composites
Abstract Silicon nitride is a ceramic material widely used in various structural applications at high temperatures owing to its excellent combination of mechanical and thermal properties. To increase the application of Si3N4, many researches have been developed to improve its fracture toughness and processing conditions. In this study, the sintering and micr
Cerâmica. Publicado em: 2019-01
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4. Microstructure, Mechanical Properties and in vitro Biological Behavior of Silicon Nitride Ceramics
The bioinert surface of silicon nitride ceramics led us to investigate the additions of SiO2, CaO and Al2O3 in order to aid the liquid phase sintering and improve the mechanical properties and biological behavior of the final materials. The sintered materials reached ca. 97% of theoretical density and total α→β-Si3N4 transformation. The samples had relat
Mat. Res.. Publicado em: 13/09/2018
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5. Synthesis of As-sintered 60NiTi Parts with a High Open Porosity Level
60NiTi, despite exhibiting attractive chemical and mechanical properties desirable for biomedical applications, has not yet been processed to a porous structure suitable for general bone replacement applications. In this research, elemental Ni and Ti powders were used to process and manufacture 60NiTi parts by employing conventional press-and-sinter method.
Mat. Res.. Publicado em: 10/07/2018
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6. Microstructural and Electrochemical behaviour of Aluminium Alloy Composites Produced Using Different Sintering Techniques
Present research work analyses the effect of heating modes on the densification, microstructure and mechanical properties of aluminum alloys [65Al-20Cu-15Mn] fabricated through powder metallurgy route. Sintering of compacts using conventional, microwave and spark plasma sintering methods has been carried out at 525°C. From the results, it has been observed
Mat. Res.. Publicado em: 12/03/2018
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7. 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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8. Tenacidad a la fractura de compuestos cermets 3Al2O3*2SiO2/Ag manufacturados por molienda de alta energía
The composites known as CERMETS are a combination between ceramics and metallic materials. The properties of these materials are different in comparison to conventional materials and their derivatives. The processing methodology of 3Al2O3*2SiO2 reinforced with silver metallic particles (CERMET) was established and discussed in this research. The final chemic
Matéria (Rio J.). Publicado em: 2016-03
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9. Development of nano-oxide dispersed 304L steels by mechanical milling and conventional sintering
In the present work an attempt has been made to synthesize 304L stainless steels alloy powders with nominal compositions 70.00Fe-19.00Cr-11.00Ni (alloy A), 69.00Fe-19.00Cr-11.00Ni- 1.0 Y2O3(alloy B), and 69.00Fe-19.00Cr-11.00Ni- 1.0 TiO2(alloy C), (all in wt.%) by mechanical milling and conventional sintering at 1150°C for 1.0 hour in argon atmosphere. Exte
Mat. Res.. Publicado em: 19/02/2016
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10. WC-Co Particles Reinforced Aluminum Matrix by Conventional and Microwave Sintering
Metal matrix composites of Al-WC (10, 15 and 20 wt%) were prepared by microwave (without holding) and conventional sintering (held for 1 hour) processes at various temperatures between 650-950 °C. The results indicated that the highest density of conventional and microwave sintering corresponds to 97.4 ± 1.2% and 98.6 ± 0.8 of theoretical density, respect
Mat. Res.. Publicado em: 03/11/2015
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11. Study of the TiC Coating on Powder Metallurgy Diamonds Tool's Performance
Some diamond tools use iron in their composition, and it is known that iron is a strong catalyst for the graphitization of diamonds. This graphitization occurs mainly during the processing of composite materials - conventional sintering or hot pressing, and during cutting operations. This work studies the effect of TiC coating on diamond, on structure, micro
Mat. Res.. Publicado em: 2015-06
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12. Microwave Assisted Synthesis and Sintering of Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite
Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) perovskite-type oxide is currently one of the most promising materials for applications in solid-oxide fuel cells (SOFCs), protonic ceramic fuel cells (PCFCs), oxygen separation membranes, and catalytic membranes for methane conversion. BSCF powder synthesis has received considerable attention and new synthesis methods have b
Mat. Res.. Publicado em: 2015-02