Observation of Gas Pores inside the Columnar Grains of a Lotus Type Porous Copper

Sheng Lin Li; Qing Lin Jin

doi:10.4028/www.scientific.net/MSF.933.182

Paper Titles

The Ordered Porous Aluminum: Modeling, Preparation, and Properties with Designed Structures
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Thermal Conductivity Measurements of Novel Porous Copper Fiber Sintered Sheet
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Evaluation of Local Strain Distribution during Compressive Deformation of Open-Cell Porous Metals
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Microstructure and Compressive Properties of Al/Al₂O₃ Syntactic Foams
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Observation of Gas Pores inside the Columnar Grains of a Lotus Type Porous Copper
p.182

The Dynamic Response of Sandwich Structures with Cellular Metallic Core under Blast Loading
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The Compressive Properties of Open-Cell Zn-22Al Foams with Spheroidal Pore at Different Temperatures
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Impact Toughness of Closed-Cell Aluminum Foam
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Quasi-Static Crushing of Aluminum Foam-Filled Thin-Walled Aluminum Tubes
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HomeMaterials Science ForumMaterials Science Forum Vol. 933Observation of Gas Pores inside the Columnar...

Observation of Gas Pores inside the Columnar Grains of a Lotus Type Porous Copper

Abstract:

Gas pores growing inside the columnar grains, instead of at grain boundary regions were observed in a lotus type porous copper. It is suggested that the lack of effective nucleation substrate in the pure copper melt makes the nucleation and subsequent growth of gas pores difficult. Therefore the melt must be sufficiently undercooled to provide enough free energy for the nucleation, and as a result the gas saturated melt will transform into a higher energy state of gas pores inside the columnar grains. Keywords: Porous material; Solidification; Gas Pore; Nucleation.

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Periodical:

Materials Science Forum (Volume 933)

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182-187

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https://doi.org/10.4028/www.scientific.net/MSF.933.182

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Online since:

October 2018

Authors:

Sheng Lin Li, Qing Lin Jin*

Keywords:

Gas Pore, Nucleation, Porous Material, Solidification

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