Hard Metal
Mostrando 1-12 de 49 artigos, teses e dissertações.
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1. Effect of Welding Parameters on Nanostructured Fe-(C, B)-(Cr, Nb) Alloys
New nanostructured Fe-(Nb,Cr)-(C,B) multicomponent alloys have been developed for hardfacing application. They have better wear resistance than traditional Fe-Cr-C alloys. The nano-alpha-Fe, eutectic and hard carboborides phases of the weld metal usually show variations with the welding procedure. 6 test samples with different heat input were welded. It was
Mat. Res.. Publicado em: 20/01/2020
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2. Effect of DLC Films with and without Silver Nanoparticles Deposited On Titanium Alloy
Resumo O filme de carbono semelhante a diamante (DLC) é um material de revestimento duro e biocompatível que pode impedir a corrosão com liberação de íons metálicos. Este estudo avaliou as características estruturais do filme de DLC, com e sem nanopartículas de prata (Ag), depositadas por plasma (PECVD) em liga de titânio (Ti-6Al-4V) e formação �
Braz. Dent. J.. Publicado em: 28/11/2019
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3. Experimental and Computational Studies of the Adsorption of Furan, Pyrrole, and Thiophene on Hydroxyapatites in a Single and Ternary Component
Non-doped (Hap) and doped hydroxyapatites with Cu2+ and Fe2+ were synthesized and used to study the adsorption of furan (Fur), pyrrole (Pyr), and thiophene (Thi) in single and ternary component systems. Spectroscopic data and N2 isotherms indicated there were no structural alterations in Hap with the incorporation of Cu2+ and Fe2+. For both single and ternar
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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4. First evaluation of semidirect recycling methods for the reclamation of cemented carbides based on a literature survey
ABSTRACT At the moment the industrially applied techniques for cemented carbide reclamation feature several deficiencies. Depending on the process route, obstacles consist in high energy and chemical consumption (indirect recycling methods) or a deterioration of the recycled product in comparison with the primary material (direct recycling approach). Therefo
Matéria (Rio J.). Publicado em: 19/07/2018
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5. On the Effect of Aluminum on the Microstructure and Mechanical Properties of CrN Coatings deposited by HiPIMS
Hard coatings are a suitable solution for increasing the lifetime of tools and components employed in different industrial applications. Coatings of transition metal nitrides have great use for tribological applications due to due to their unique mechanical properties. Although widely employed, current deposition methods such as cathodic arc evaporation prod
Mat. Res.. Publicado em: 12/04/2018
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6. Spark Plasma Sintering of a Hard Metal Powder Obtained from Hard Metal Scrap
Spark plasma sintering is used to consolidate a WC-Co powder produced from milled discharged hard metal cutting inserts. The powder was mixed to 10%wt Co powder and spark plasma sintered (SPS) under 80Mpa pressure, at 1200ºC with heating rate of 160ºC/min. A reference alloy was prepared with a commercial WC powder and 10%wt. Co under the same conditions. T
Mat. Res.. Publicado em: 13/03/2017
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7. Effect of Solid-State Laser Parameters on the Surface's Topography Formation During Texturization of Hard Metal Cutting Tools
ABSTRACT: The objective of this paper is to analyze the influence of specific laser system parameters on the microstructure of the ring formation process on the hard metal tool's surface. The parameters analyzed were: working distance, incident beam power and tool surface treatment, flank and rake. The microstructures were analyzed with regard to its diamete
J. Aerosp. Technol. Manag.. Publicado em: 2015-03
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8. Efecto del calor aportado en recargues nanoestructurados base hierro
In the last years there have been developed several consumables that deposit hard nanostructured iron-based metals with high resistance to abrasive wear. The erosive and abrasive wear resistances are mainly controlled by the chemical composition and the microstructure. In turn, the microstructure of the deposited metal usually shows variations with the exper
Soldag. insp.. Publicado em: 2013-12
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9. Factors affecting the bond strength of denture base and reline acrylic resins to base metal materials
OBJECTIVE: The shear bond strengths of two hard chairside reline resin materials and an auto-polymerizing denture base resin material to cast Ti and a Co-Cr alloy treated using four conditioning methods were investigated. MATERIAL AND METHODS: Disk specimens (diameter 10 mm and thickness 2.5 mm) were cast from pure Ti and Co-Cr alloy. The specimens were
J. Appl. Oral Sci.. Publicado em: 2013-07
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10. Simulação computacional de medidas estereológicas em estruturas de metal duro (WC-Co)
Este trabalho versa sobre a criação e as aplicações de um software de simulação dinâmica para estudo da estrutura do metal duro (WC-Co). A base tecnológica utilizada para ampliação da capacidade de hardware foi a GPU Geforce 9600 GT com o chip Physx criada com o propósito de dar mais realismo aos jogos eletrônicos. O software simula a estrutura t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/08/2011
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11. Carnavalização bakhtiniana do grotesco em imagens do Hard Rock e Heavy Metal
The language of Rock has the nature of parody, allegory, carnival and imagery. A typology of image content is obtained through the concept of carnivalization as stated by Mikhail Bakhtin, and by means of it, this text analyses the use and significance of pictures containing grotesque, physical deformities, monsterized types in the visual language of Hard Roc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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12. Efeito da adição de Nb, Mo, Cr e Ti na microestrutura do metal duro WC-6Co
Os metais duros constituem um grupo de materiais conhecidos como compósitos sinterizados que associam fases duras (carbetos), com uma fase metálica, sendo amplamente utilizados em aplicações em que se deseja elevada dureza e resistência ao desgaste, aliada à alta tenacidade. Neste trabalho apresentam-se os resultados da adição de 1% em peso dos eleme
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011