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

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.

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Thermal properties of closed-cell aluminum foam with circular pores

Thermal Science ◽

10.2298/tsci1405619l ◽

2014 ◽

Vol 18 (5) ◽

pp. 1619-1624 ◽

Cited By ~ 2

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.

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Gold-ionic liquid nanofluids with preferably tribological properties and thermal conductivity

Nanoscale Research Letters ◽

10.1186/1556-276x-6-259 ◽

2011 ◽

Vol 6 (1) ◽

pp. 259 ◽

Cited By ~ 37

Author(s):

Baogang Wang ◽

Xiaobo Wang ◽

Wenjing Lou ◽

Jingcheng Hao

Keyword(s):

Thermal Conductivity ◽

Ionic Liquid ◽

Tribological Properties

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Application of Superplastic Flow to Manufacturing of Microcellular Aluminum Foams

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.3021 ◽

2005 ◽

Vol 475-479 ◽

pp. 3021-3024 ◽

Cited By ~ 1

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.

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Thermal conductivity and tribological properties of POM-Cu composites

Polymer Engineering & Science ◽

10.1002/pen.21750 ◽

2010 ◽

Vol 50 (11) ◽

pp. 2153-2159 ◽

Cited By ~ 16

Author(s):

Junqing He ◽

Ling Zhang ◽

Chunzhong Li

Keyword(s):

Thermal Conductivity ◽

Tribological Properties

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Synthesis of water-soluble Cu nanoparticles and evaluation of their tribological properties and thermal conductivity as a water-based additive

Friction ◽

10.1007/s40544-018-0209-7 ◽

2018 ◽

Vol 7 (3) ◽

pp. 246-259 ◽

Cited By ~ 9

Author(s):

Junhua Zhao ◽

Guangbin Yang ◽

Chunli Zhang ◽

Yujuan Zhang ◽

Shengmao Zhang ◽

...

Keyword(s):

Thermal Conductivity ◽

Tribological Properties ◽

Water Soluble ◽

Cu Nanoparticles ◽

Water Based

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Effect of MWCNTs/Talc powder nanoparticles on the tribological and thermal conductivity performance of calcium grease

Industrial Lubrication and Tribology ◽

10.1108/ilt-03-2019-0102 ◽

2019 ◽

Vol 72 (1) ◽

pp. 9-14 ◽

Cited By ~ 2

Author(s):

Ahmed Mobasher ◽

Alaa Khalil ◽

Medhat Khashaba ◽

Tarek Osman

Keyword(s):

Thermal Conductivity ◽

Tribological Properties ◽

Power Efficiency ◽

Friction Reduction ◽

Wear Testing ◽

Mechanical Equipment ◽

Content Type ◽

Transmission Electron ◽

Nano Additives ◽

Pin On Disk

Purpose The purpose of this paper is to evaluate the influence of nanoparticles as an additive on the tribological properties of calcium grease. Design/methodology/approach The nano additives in this research are with different concentration of multi carbon nanotubes (MWCNTs) and Talc powder (1, 2, 3, 3 and 5 per cent). The ratio of MWCNTs to Talc powder is 1:1. The tribological properties of hyper MWCNTs/Talc powder to calcium grease were evaluated using a pin-on-disk wear testing. The results show that the nano additives MWCNTs/Talc to calcium grease exhibit good performance in anti-wear and friction reduction. The action mechanism was estimated through analysis of the worm surface with x-ray diffraction and transmission electron microscope. Findings The result indicates that boundary film mainly composed of MWCNT and Talc powder, and other organic compound was formed on the worm surface during the friction test. In addition, the wear rate and coefficient of friction of nanogreases have shown excellent improvement about 80.62 and 63.44 per cent, respectively, at 4 Wt.% of MWCNTs/Talc powder. Moreover, the thermal conductivity of nanogrease increased about 51.72 per cent. Originality/value This study describes the inexpensive and simple fabrication of nanogrease for improving properties of lubricants, which improve power efficiency and extend lifetimes of mechanical equipment.

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