نتایج جستجو برای: ir thermal processing

تعداد نتایج: 770242  

2004
Galen Barbose Charles Goldman

(ISO-NE) for providing review comments on a draft of this report. We also thank the utility program managers who were willing to be interviewed and who provided valuable information on the RTP tariffs included in this study. The authors are solely responsible for any errors or omissions contained in this report.

2008
Ramesh Narayan

Recent infrared (IR) observations of the center of our Galaxy indicate that the supermassive black hole source Sgr A* is strongly variable in the IR. The timescale for the variability, ∼ 30 min, is comparable to that of the X-ray flares observed by Chandra and XMM, suggesting a common physical origin. In this paper, we investigate the nature of the IR emission in the context of models recently ...

Journal: :مهندسی متالورژی و مواد 0
ابراهیم کمالی علیرضا تیمورتاش محمد پسندیده فرد

in this paper, a 3d stochastic model has been presented to predict the coating thickness and porosity in a thermal spray coating process. different values of processing parameters were obtained. the model was developed on the basis of prescribed rules in calculating the splat size during the impact of individual droplets on the surface of the substrate. due to the thermal stresses produced duri...

2005
J. Henningsen

Lithium thioindate (LiInS2) is a new nonlinear chalcogenide biaxial material transparent from 0.4 to 12 μm, that has been successfully grown in large sizes and good optical quality. We report on new physical properties that are relevant for laser and nonlinear optics applications. With respect to AgGaS(e)2 ternary chalcopyrite materials, LiInS2 displays a nearly-isotropic thermal expansion beha...

2008
Matthieu Klein Abdelhakim Bendada Mariacristina Pilla Clemente Ibarra-Castanedo Xavier Maldague

In pulsed thermography the sample to test is briefly heated with a Dirac δ heat impulse and then observed through an infrared (IR) camera recording thermal images as the sample is cooling down. The difference of temperature on the IR images between the defective areas and the sound areas is referred to as a thermal contrast [1]. The Signal-to-Noise Ratio (SNR) of such a contrast is strongly aff...

2012
Anushri Gupta S. K. Upadhyaya Kamal Kishore

IR, X-ray diffraction and thermal analysis were used to illustrate the structure of cerium and thorium laurate in solid state. IR results reveal that the fatty acid exists with dimeric structure through intermolecular hydrogen bonding and cerium and thorium laurate were ionic in nature. The X-Ray diffraction measurements confirm that these soaps posses double layer structure with long spacing. ...

2010
ANDREIA CORCIOVA DOINA LAZAR MIHAI LAZAR

The objectives of this study were to characterize a synthesis brom-isoflavanone (notated IF) with possible pharmacological activities, water insoluble and to examine the potential of beta-cyclodextrin to improve this property and obtain inclusion compounds that were analysed by different techniques: UV-Vis, IR, 1HNMR spectroscopy, thermal analysis. The presence of β-cyclodextrin rises the conte...

In current study, the synthesis and characterization of novel thermally stable polyimides (PIs) containing an 1,3,4-oxadiazole moiety based on a diamine, i.e. 2,5-bis(3-amino-4-methyl benzene)-1,3,4-oxadiazole (BAMO), have been reported. The polymers were characterized using FT-IR and elemental analysis (CHN). Thermal and mechanical behaviours of the prepared PIs were studied by thermo-gravimet...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده سرامیک 1392

thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...

Journal: :ACS applied materials & interfaces 2014
Huan Lin Shen Xu Yu-Qing Zhang Xinwei Wang

For ultrathin metallic films, either supported or free-standing, the inside nanocrystalline nature significantly reduces the electron and thermal transport. Quantum mechanical reflection of electrons at the grain boundary reduces the electrical conductivity further than the thermal conductivity, leading to a Lorenz number in the order of 7.0 × 10(-8) W Ω K(-2), much higher than that of the bulk...

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