Thermal conductivity of aluminum foam based on 3‐D stochastic sphere model

Heat Transfer ◽  
2019 ◽  
Vol 49 (2) ◽  
pp. 823-837
Author(s):  
Minghan Sun ◽  
Meichen Fan ◽  
Lingxiao Li ◽  
Zhiqiang Xu ◽  
Tingsong Yang
Keyword(s):  
Thermal Conductivity ◽  
Aluminum Foam ◽  
Sphere Model

USE OF THE MICROWAVE ENERGY FOR ALUMINUM WASTE FOAMING

2019 ◽  
Vol 25 (4) ◽  
pp. 43-49
Author(s):  
LUCIAN PAUNESCU ◽  
MARIUS FLORIN DRAGOESCU ◽  
SORIN MIRCEA AXINTE ◽  
ANA CASANDRA SEBE
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Porous Structure ◽  
Powder Mixture ◽  
Aluminum Foam ◽  
Fine Powder ◽  
Microwave Energy ◽  
Raw Material ◽  
Foaming Agent ◽  
Foaming Process

The paper presents an aluminum foam experimental technique using the microwave energy. The raw material was recycling aluminum waste processed by ecological melting and gas atomizing to obtain the fine powder required in the foaming process. The powder mixture was completed with dolomite as a foaming agent. The products had a fine and homogeneous porous structure (pore size between 0.4-0.9 mm). The density (1.17-1.19 g/cm3), the compressive strength (6.83-7.01 MPa) and the thermal conductivity (5.71-5.84 W/m·K) had values almost similar to the foams made by conventional methods.

scholarly journals Thermal properties of closed-cell aluminum foam with circular pores

2014 ◽  
Vol 18 (5) ◽  
pp. 1619-1624 ◽  
Author(s):  
Guo-Yun Lu ◽  
Bu-Yun Su ◽  
Zhi-Qiang Li ◽  
Zhi-Hua Wang ◽  
Wei-Dong Song ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Thermal Property ◽  
Cell Size ◽  
Aluminum Foam ◽  
Slight Effect ◽  
Apparent Thermal Conductivity ◽  
Closed Cell ◽  
Simulation Results

The thermal property of closed-cell aluminum foam is studied numerically and the effects of the distribution of the circular pore on the thermal property are studied theoretically. When the convection and radiation are ignored, the effects of porosity, cell size, and distribution forms of pore on the apparent thermal conductivity are investigated. Moreover, the effects of air in the pore on the thermal property are analyzed as well. Simulation results show that apparent thermal conductivity linearly increases with the increase of porosity, while the cell size and the distribution have negligible effects on the thermal property. By comparison, thermal conductivity of air has slight effect on thermal property of foamed aluminum in the context of small size pore.

Effect of coatings on thermal conductivity and tribological properties of aluminum foam/polyoxymethylene interpenetrating composites

2019 ◽  
Vol 54 (20) ◽  
pp. 13135-13146 ◽  
Author(s):  
Peiran Dong ◽  
Chunguang Long ◽  
Ying Peng ◽  
Xin Peng ◽  
Fangyu Guo
Keyword(s):  
Thermal Conductivity ◽  
Tribological Properties ◽  
Aluminum Foam

Application of Superplastic Flow to Manufacturing of Microcellular Aluminum Foams

2005 ◽  
Vol 475-479 ◽  
pp. 3021-3024 ◽  
Author(s):  
Shinya Kamimura ◽  
Koichi Kitazono ◽  
Eiichi Sato ◽  
Kazuhiko Kuribayashi
Keyword(s):  
Thermal Conductivity ◽  
Cell Shape ◽  
Aluminum Foam ◽  
Oblate Spheroid ◽  
Metal Foams ◽  
Aluminum Foams ◽  
Roll Bonding ◽  
Heat Insulator ◽  
5083 Aluminum Alloy ◽  
Superplastic Condition

A new application of superplasticity was proposed in the manufacturing process of metal foams. Preform sheets were manufactured using superplastic 5083 aluminum alloy sheets through accumulative roll-bonding (ARB) process. Microcellular aluminum foam plates with 50% porosity were produced through solid-state foaming under the superplastic condition. The cell shape was oblate spheroid, which is effective to reduce the thermal conductivity. The present aluminum foam plates have a potential as an excellent heat insulator.

Thermal conductivity of closed-cell aluminum foam based on the 3D geometrical reconstruction

2014 ◽  
Vol 72 ◽  
pp. 242-249 ◽  
Author(s):  
Xiaolei Zhu ◽  
Shigang Ai ◽  
Xiaofeng Lu ◽  
Xiang Ling ◽  
Lingxue Zhu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Aluminum Foam ◽  
Closed Cell
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