scholarly journals A Modeling Study of the Pore Size Evolution in Lithium-Oxygen Battery Electrodes

2015 ◽  
Vol 162 (8) ◽  
pp. A1636-A1645 ◽  
Author(s):  
Xianglin Li
Keyword(s):  
Pore Size ◽  
Size Evolution ◽  
Lithium Oxygen Battery ◽  
Modeling Study

Evaluation and Modeling of the CO2Permeability Variation by Coupling Effective Pore Size Evolution in Anthracite Coal

2015 ◽  
Vol 29 (2) ◽  
pp. 717-723 ◽  
Author(s):  
Junqian Li ◽  
Dameng Liu ◽  
Shuangfang Lu ◽  
Yanbin Yao ◽  
Haitao Xue
Keyword(s):  
Pore Size ◽  
Anthracite Coal ◽  
Size Evolution ◽  
Effective Pore Size

scholarly journals Semi-vitrified porous kyanite mullite ceramics: Young modulus, microstructure and pore size evolution

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Juvenal N. G. Deutou ◽  
Ntieche Zounedou ◽  
Rodrigue C. Kaze ◽  
Hawa Mohamed ◽  
Tibi Beda ◽  
...  
Keyword(s):  
Pore Size ◽  
Young Modulus ◽  
Size Evolution ◽  
Mullite Ceramics

Modelling of Effective Thermal Conductance of Metal Foam Contact Thermal Interfaces

2013 ◽  
Author(s):  
Ninad Trifale ◽  
Kazuaki Yazawa ◽  
Eric Nauman
Keyword(s):  
Pore Size ◽  
Heat Sink ◽  
Metal Foam ◽  
Thermal Conductance ◽  
Electronics Cooling ◽  
Target Surface ◽  
Mechanical Stiffness ◽  
Tetrahedral Geometry ◽  
Flow Through ◽  
Modeling Study

We present a modeling study of the effective thermal conductance of metal foams as a thermal interface focusing on the electronics cooling applications. Metal foam material as a porous media has been considered for several applications because of its significantly large surface area for a given volume. In the electronics cooling, aluminum porous heat sinks have been well studied. It is not only cost effective due to the unique production process, but also attractive for the theoretical modeling study to determine the performance. In the past studies, effective thermal conductivity for heat transfer through solid with the tetrahedral geometry, while the pores, assumed to have vacant volumes, has been modeled. Instead of allowing the refrigerant flow through the connected pores in the porous medium, we considered the vacant space filled with stationary air. The major transport of the heat is considered to flow through the solid bridges, which connect the onside to the other side directly. Thus, the porous density for our application shall be relatively lower than the best value for heat sink applications. It must, however, be in a specific range such that it is mechanically compliant to make proper contact to both, the cooling target surface and the heat sink surface. It is obvious that the smaller pore ratio makes the metal foam stiffer. We model the contact thermal performance with considering the mechanical stiffness as a function of pore ratio as well as an intrinsic thermal conductance across the metal foam. Due to the limited literature of the variation of the pore size, we present the first order analysis assuming a fixed and uniform pore size.

In-Situ Microstructure Characterization of Sintering of Controlled Porosity Materials

1994 ◽  
Vol 346 ◽  
Author(s):  
Helen M. Kerch ◽  
Harold E. Burdette ◽  
Rosario Gerhardt ◽  
Susan Krueger ◽  
Andrew J. Allen ◽  
...  
Keyword(s):  
Pore Size ◽  
Small Angle ◽  
Sintering Behavior ◽  
Quantitative Measurements ◽  
Angle Scattering ◽  
Size Evolution ◽  
Bimodal Pore Size Distribution ◽  
Controlled Porosity ◽  
Colloidal Gel

ABSTRACTThe isothermal sintering behavior of a colloidal gel with a well-characterized pore structure was studied using a newly commissioned in-situ small-angle neutron scattering furnace. The apparatus enables small-angle scattering measurements to be performed on monolithic samples during heat treatment in an oxidizing, reducing, or neutral environment at temperatures up to 1700°C. In-situ, quantitative measurements of the pore size evolution within a gel possessing a bimodal pore size distribution is discussed. Also reported is the in-situ measurement of the gel's surface area evolution which is an important microstructural parameter in understanding the sintering behavior of highly porous materials.

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