Densification Behavior and Microstructural Development of Nano-Agglomerate Powder during Sintering

Yun Sung Kang; B.H. Cha; H.G. Kang; Jai Sung Lee

doi:10.4028/www.scientific.net/MSF.534-536.505

Paper Titles

An Investigation on the Sintering Behavior of High Strength Al-Zn-Mg-Cu Alloy Prepared from Elemental Powders
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Analysis of Particle Rearrangement during Sintering by Micro Focus Computed Tomography (µCT)
p.493

Assessment of the Corrosion Behavior of a Sintered Al-Cu-Mg Alloy in Aeronautical Environments as a Function of the Heat Treatment
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Consolidation of Bulk Metallic Glass Composites
p.501

Densification Behavior and Microstructural Development of Nano-Agglomerate Powder during Sintering
p.505

Densification Behaviors of Fe-TiC System during Spark Plasma Sintering
p.509

Effect of the Preparation Methods of Me+Al Powder Blends on the Compaction Behavior, Structure, Phase Transformations, and Properties of the Compacted Aluminides of Transition Metals
p.513

Expansion Behavior of Iron-Copper Compact from (FeCu) Pre-Alloyed Powder
p.517

Fabrication of Deep-Sub-Millimeter-Thick Compacts Using Spark Plasma Sintering
p.521

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Densification Behavior and Microstructural Development of Nano-Agglomerate Powder during Sintering

Abstract:

Densification behavior of nano-agglomerate powder during pressureless sintering of Fe-Ni nanopowder was investigated in terms of diffusion kinetics and microstructural development. To understand the role of agglomerate boundary for sintering process, densification kinetics of Fe-Ni nano-agglomerate powder with different agglomerate size was investigated. It was found that activation energy for densification process was lower in the small-sized agglomerate powder. The increase in the volume fraction of inter-agglomerate boundary acting as high diffusion path might be responsible for the enhanced diffusion process.