Titanium Nitride
Mostrando 13-24 de 29 artigos, teses e dissertações.
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13. Desenvolvimento de processos de eletrodos de porta (TaN e TiN) para dispositivos MOS / Process development of gate electrodes (TiN and TaN) for MOS devices
Tantalum nitride (TaN) and titanium nitride (TiN) films have been obtained by DC sputtering, using different nitrogen flow (10 - 80 sccm) and power (500 - 1500 W), in a nitrogen (N2)/argon (Ar) ambient on Si (100) substrates. The N2/Ar ratio in gas mixture and power effects on structural and electrical properties of TaN and TiN films were investigated by sca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/07/2011
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14. Ultramorphology of the root surface subsequent to hand-ultrasonic simultaneous instrumentation during non-surgical periodontal treatments: an in vitro study
OBJECTIVE: The purpose of this study was to investigate the ultramorphology of the root surfaces induced by mechanical instrumentation performed using conventional curettes or piezoelectric scalers when used single-handedly or with a combined technique. MATERIAL AND METHODS: Thirty single-rooted teeth were selected and divided into 3 groups: Group A, instrum
Journal of Applied Oral Science. Publicado em: 2011-02
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15. Hardness evaluation, stoichiometry and grain size of titanium nitride obtained with plasma nitriding on Ti-6AI-4V samples
Titanium nitride films were formed on the surface of Ti-6Al-4V discs by plasma nitriding (glow discharge) in different N2:H2 atmospheres at several substrate temperatures. In this study the influence of the process parameters on dynamic micro-hardness were investigated. Grain sizes of the nitride films, determined with X-Ray Diffraction, were related to the
Publicado em: 2011
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16. âRevestimento por soldagem MIG/MAG empregando ligas de nÃquel para apliacaÃÃes em componentes do setor de petrÃleo e gÃs naturalâ / Gmaw Welding Overlay Of Nickel-Based Alloys For Applications In Oil And Natural Gas Components
The weld overlay of nickel-based alloys is an alternative often used in oil and gas industry to prevent corrosion in pipes and equipments operating under severe conditions. In many situations the requirements of weld overlays are based in a maximum of 5% iron content in the weld metal to ensure corrosion resistance. The aim of this study was to determine the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/2010
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17. Revestimentos de liga de nÃquel depositados pelo processo TIG com alimentaÃÃo de arame frio: aspectos operacionais e metalÃrgicos / Nickel based alloys weld overlay deposited by gtaw cold wire feed: operational and metallurgical aspects
The weld overlay with nickel-based alloys is an interesting alternative for the construction and repair of equipments for applications in severe corrosive medium, allowing reach the desirable characteristics (corrosion resistance) with a significant reduction of cost. In this context, the GTAW cold wire feed process can be a good option for overlay depositio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2010
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18. Hardness evaluation, stoichiometry and grain size of titanium nitride films obtained with plasma nitriding on Ti-6Al-4V samples
Titanium nitride films were formed on the surface of Ti-6Al-4V discs by plasma nitriding (glow discharge) in different N2:H2 atmospheres at several substrate temperatures. In this study the influence of the process parameters on dynamic micro-hardness were investigated. Grain sizes of the nitride films, determined with X-Ray Diffraction, were related to the
Matéria (Rio de Janeiro). Publicado em: 2010
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19. Synthesis of nanostructured boron nitride and its potentially for application in cosmetology / Sínteses e caracterização de nitreto de boro nanoestrutrado com potencialidade de aplicação em cosmetologia
Regular use of appropriate cosmetics is an important resource for the maintenance of the skin health and, consequently, its beauty. The effect of ultraviolet rays is harmful to the health of the skin and can result in increase of the cancer incidence, aging and other undesirable cutaneous changes. The effects of the infra-red rays are less described in the s
Publicado em: 2009
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20. PRODUÇÃO E CARACTERIZAÇÃO DE NANO PARTÍCULAS DO SISTEMA TI-N-O VIA REAÇÃO NA FASE VAPOR / PRODUCTION AND CHARACTERIZATION OF TIN NANO PARTICLES FROM VAPOR PHASE
Nitrides, especially those of transition metals, have received increasing attention in recent years because of their unique chemical and physical properties. Among them, TiN presents many interesting properties, which make it interesting for some potential industrial applications. The importance of nitride titanium (TiN) is due to its properties of high ther
Publicado em: 2008
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21. Isolantes de porta com altas constantes dieletricas (High K) para tecnologia MOS / High K gate insulators for MOS technology
High k insulators for the next generation (sub-32 nm CMOS (complementary metaloxide-semiconductor) technology), such as titanium oxide (TiOx), titanium oxynitride (TiOxNy), titanium-aluminum oxynitride (AlxTiwOyNz), titanium-aluminum nitride (AlxTiwNz) and titanium-aluminum oxide (AlxTiwOy), have been obtained by Ti or Ti/Al e-beam evaporation, with addition
Publicado em: 2008
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22. 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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23. Análise in vitro da corrosão de branquetes revestidos por nitreto de titânio / In vitro analysis of corrosion from titanium nitrate coated brackets
The metallic alloys used in the manufacture of orthodontic appliances when exposed to the oral environment are subjected to chemical, mechanical and physical alterations, which could lead to a corrosion process. The metallic ions released from this process may induce adverse effects in the organism leading to hypersensitivity and cytotoxicity reactions. With
Publicado em: 2006
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24. Laser beam welding of titanium nitride coated titanium using pulse-shaping
A new welding method which allows the assembly of two titanium nitride coated titanium parts is proposed. The welding procedure utilizes the possibility for pulse-shaping in order to change the energy distribution profile during the laser pulse. The pulse-shaping is composed of three elements: a) a short high power pulse for partial ablation at the surface;
Materials Research. Publicado em: 2005-09