Characterization of a thermoplastic foam material with the two-layer viscoplastic model

2017 ◽  
Vol 4 (5) ◽  
pp. 5749-5754 ◽  
Author(s):  
Szabolcs Berezvai ◽  
Attila Kossa
Keyword(s):  
Foam Material ◽  
Viscoplastic Model ◽  
Thermoplastic Foam

scholarly journals CHARACTERIZATION OF OPEN CELL SIC FOAM MATERIAL

2012 ◽  
Vol 38 ◽  
pp. 225-239 ◽  
Author(s):  
Irena Zivkovic ◽  
Axel Murk
Keyword(s):  
Foam Material ◽  
Open Cell

scholarly journals Characterization of Low Density Carbon Foams by X-ray Computed Tomography (CT) and Ion Microtomography (IMT)

1990 ◽  
Vol 217 ◽  
Author(s):  
W. E. Moddeman ◽  
D. P. Kramer ◽  
D. W. Firsich ◽  
P. D. Trainer ◽  
R. N. Yancy ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Analytical Data ◽  
Low Density ◽  
Foam Material ◽  
X Ray ◽  
Processing Step ◽  
Carbon Foams ◽  
Small Density ◽  
X Ray Computed

ABSTRACTTwo NDT techniques were used to characterize low-density, microcellular, carbon foams fabricated from a salt replica process. The two techniques are x-ray computed tomography (CT) and ion microtomography (IMT); data are presented on carbon foams that contain high-density regions. The data show that densities which differ by <10% are easily observable for these low density (<100 mg/cm3) materials. The data reveal that the carbon foams produced by this replica process have small density variations; the density being ∼30% greater at the outer edges than when compared to the interior of the foam. In addition, the density gradient is found to be rather sharp, that is the density drops-off rapidly from the outer edges to a uniform one in the interior of the foam. This edge build-up in carbon density was explained in terms of polymer concentrating on the foam exterior during drying which immediately followed a polymer infusion processing step. Supporting analytical data from other techniques show the foam material to be >99.9 % carbon

Synthesis and characterization of a polyurethane-polyaniline macroporous foam material for methyl orange removal in aqueous media

2021 ◽  
Vol 26 ◽  
pp. 102155
Author(s):  
L.S. Mendieta-Rodríguez ◽  
L.M. González-Rodríguez ◽  
José J. Alcaraz-Espinoza ◽  
Alicia E. Chávez-Guajardo ◽  
Juan C. Medina-Llamas
Keyword(s):  
Methyl Orange ◽  
Aqueous Media ◽  
Synthesis And Characterization ◽  
Foam Material

Preparation and characterization of high porosity cement-based foam material

2015 ◽  
Vol 91 ◽  
pp. 133-137 ◽  
Author(s):  
Guochen Sang ◽  
Yiyun Zhu ◽  
Gang Yang ◽  
Haobo Zhang
Keyword(s):  
High Porosity ◽  
Foam Material

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

Characterization of Coherent, Ordered Precipitates in Nickel-Base Alloys

1973 ◽  
Vol 31 ◽  
pp. 144-145
Author(s):  
B. H. Kear ◽  
J. M. Oblak
Keyword(s):  
Stable Phase ◽  
Nickel Base Superalloy ◽  
Alloy 718 ◽  
Commercial Alloy ◽  
Precipitate Morphology ◽  
Continuous Precipitation ◽  
Nickel Base ◽  
Base Superalloy ◽  
Strengthening Precipitate

A nickel-base superalloy is essentially a Ni/Cr solid solution hardened by additions of Al (Ti, Nb, etc.) to precipitate a coherent, ordered phase. In most commercial alloy systems, e.g. B-1900, IN-100 and Mar-M200, the stable precipitate is Ni3 (Al,Ti) γ′, with an LI2structure. In A lloy 901 the normal precipitate is metastable Nis Ti3 γ′ ; the stable phase is a hexagonal Do2 4 structure. In Alloy 718 the strengthening precipitate is metastable γ″, which has a body-centered tetragonal D022 structure.Precipitate MorphologyIn most systems the ordered γ′ phase forms by a continuous precipitation re-action, which gives rise to a uniform intragranular dispersion of precipitate particles. For zero γ/γ′ misfit, the γ′ precipitates assume a spheroidal.

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