Thermal Expansion Coefficient
Mostrando 13-24 de 47 artigos, teses e dissertações.
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13. Effects of Local Heat Input Conditions on the Thermophysical Properties of Super Duplex Stainless Steels (SDSS)
The properties of the super duplex stainless steels (SDSS) are strongly affected by the thermal history imposed by welding procedures. The controlled dual phase microstructure (ferrite and austenite) guarantee excellent mechanical properties such as mechanical strength and corrosion resistance, in addition to small thermal expansion coefficient and high ther
Mat. Res.. Publicado em: 11/01/2018
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14. Thermal and mechanical properties of commercial MgO-C bricks
abstractMgO-C (magnesia-carbon) refractories are widely used in several steelmaking linings. These refractories are exposed to extreme stress due to high temperatures (T > 1600 °C) required to cause the metallurgical reactions. These working conditions produced refractory wear through various related processes. The different types of degradation that the ma
Matéria (Rio J.). Publicado em: 2015-09
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15. Environmental Effects on Thermal Properties of PEI/Glass Fiber Composite Materials
ABSTRACT: The aim of this study was to investigate the effects of hygrothermal exposure, ultraviolet (UV) radiation, salt spray and thermal shock aging on the thermomechanical behavior of glass fiber reinforced by poly (ether-imide) (PEI) composites. Dynamic mechanical (DMA) and Thermomechanical (TMA) analyses have been performed on the aged PEI composites a
J. Aerosp. Technol. Manag.. Publicado em: 2013-06
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16. Sensoriamento remoto aplicado à análise temporal da relação uso da terra/temperatura e albedo de superfície na bacia do Rio Vieira no Norte de Minas Gerais
This study aimed to analyze with the help of TM data - Landsat 5, the relationship between the changes in land use and the variation of temperature and surface albedo, during period winter in basin River Vieira for the years 1985, 1995 and 2010. The choice of river basin Vieira is justified because this area, located in the North of Minas Gerais, was the sce
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2012
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17. Evaluation of the coefficient of thermal expansion of human and bovine dentin by thermomechanical analysis
A discrepância entre a expansão e a contração térmica dos materiais restauradores e o dente podem causar estresse na sua interface, podendo levar a uma microinfiltração. O presente trabalho determinou e comparou o coeficiente de expansão térmica (CET) com o comportamento termo mecânico dos dentes humanos e bovinos e determinou se o CET é um parâm
Brazilian Dental Journal. Publicado em: 2012
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18. Entropy variation in isothermal fluid flow considering real gas effects
Abstract The present paper concerns on the estimative of the pressure loss and entropy variation in an isothermal fluid flow, considering real gas effects. The 1D formulation is based on the isothermal compressibility module and on the thermal expansion coefficient in order to be applicable for both gas and liquid as pure substances. It is emphasized on the
J. Aerosp. Technol. Manag.. Publicado em: 2011-04
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19. Tratamento superficial do aço inoxidável ferrítico com revestimento La0,6Sr0,4CoO3 para aplicação como interconectores em células a combustíveis do tipo ITSOFC
High-temperature solid oxide fuel cells (800-1000°C) are energy power generation, directly converting the chemical energy into electricity by combining fuel and oxygen. With the reduction of SOFC operating temperature into an intermediate temperature range of 600-800 °C, it has become possible to replace conventional ceramics with metallic alloys for inter
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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20. Caracterização de vidros niobofosfatos para aplicação em selagem em célula a combústivel de óxido sólido / Characterization of niobophosphate glasses for solid oxide fuel cell (SOFC) sealing
Solid oxide fuel cells (SOFC) are devices which generate d.c. power by the oxidation of hydrogen molecules. These devices can have a multilayer plane design containing a cathode, an anode, a solid electrolyte, and a sealing material. The sealing, which is the subject of this study, has to be chemically stable at relatively SOFC operational condition in oxi-r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2010
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21. Correlation between metal-ceramic bond strength and coefficient of linear thermal expansion difference
The purpose of this study was to evaluate the metal-ceramic bond strength (MCBS) of 6 metal-ceramic pairs (2 Ni-Cr alloys and 1 Pd-Ag alloy with 2 dental ceramics) and correlate the MCBS values with the differences between the coefficients of linear thermal expansion (CTEs) of the metals and ceramics. Verabond (VB) Ni-Cr-Be alloy, Verabond II (VB2), Ni-Cr al
Journal of Applied Oral Science. Publicado em: 2009-04
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22. Simulações por dinâmica molecular de compostos do tipo ABO3 (SrTiO3 e CaTiO3)
Using the classical molecular dynamics simulations, Perovskites systems composed by oxides (ABO3), in particular SrTiO3 and CaTiO3, were performed. The titanates are easily prepared as polycrystalline ceramics; chemically and mechanically stable they can be characterized in various temperature and pressure conditions. These provide us reliable experimental r
Publicado em: 2009
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23. Atomistic simulations of supercooled gallium / Simulações atomisticas do galio super-resfriado
Recently, the existence of a liquid-liquid transition in pure substances has been proposed as an explanation of anomalous behaviors such as the increase of response functions (isothermal compressibility, coefficient of thermal expansion, specific heat) with decreasing temperature displayed by some liquids. The existence of this type of transition has been de
Publicado em: 2009
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24. Development of lanthanum chromites-based materials for solid oxide fuel cell interconnects
Lanthanum chromites (LaCrO3) are the main materials used as interconnect for solid oxide fuel cells. However, there are several difficulties involved in the processing of these materials. The objective of this work is to investigate and to characterize the relationships between microstructural development process and the electro-thermal-mechanical behavior o
Matéria (Rio de Janeiro). Publicado em: 2008-03