The influence of the local effect of electric current on densification of tungsten powder during spark plasma sintering

2019 ◽  
Vol 356 ◽  
pp. 769-777 ◽  
Author(s):  
Shenghua Deng ◽  
Hongjin Zhao ◽  
Ruidi Li ◽  
Tiechui Yuan ◽  
Lanbo Li ◽  
...  
Keyword(s):  
Electric Current ◽  
Spark Plasma Sintering ◽  
Tungsten Powder ◽  
Local Effect ◽  
Plasma Sintering ◽  
Spark Plasma

Fabrication of Porous Al with Controlled Pore Size by Spark Plasma Sintering

2014 ◽  
Vol 616 ◽  
pp. 199-203
Author(s):  
Qi Zhong Li ◽  
Dong Ming Zhang ◽  
Lian Meng Zhang
Keyword(s):  
Pore Size ◽  
Electric Current ◽  
Spark Plasma Sintering ◽  
Particle Diameter ◽  
Precipitation Method ◽  
Control Range ◽  
Size Particle ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Condition

Porous Al with controlled pore size was prepared by the spacer method including spark plasma sintering and the dissolution of space-holding NaCl particles. The NaCl of the controlled pore size (particle diameter control range of 5˰ڌm~20˰ڌm) were prepared by precipitation method. The effects of sintering condition such as the sintering electric current intensity, voltage and the size, morphology and content of NaCl powder on the porosity and size of porous Al are investigated. The porous Al with higher porosity of 69.41% and smaller pore size of 5 ڌm was obtained.

On the Preparation of Advanced Materials via Pulsed Electric Current Sintering Procedures

2016 ◽  
Vol 258 ◽  
pp. 436-439 ◽  
Author(s):  
Sebastián Díaz de la Torre ◽  
Ladislav Čelko ◽  
Mariano Casas Luna ◽  
Edgar Benjamin Montúfar Jimenéz
Keyword(s):  
Electric Current ◽  
Spark Plasma Sintering ◽  
Research Group ◽  
Advanced Materials ◽  
General Overview ◽  
Plasma Sintering ◽  
Pulsed Electric Current ◽  
Spark Plasma ◽  
3D Printed ◽  
Porous Substrates

A general overview on the processing of a series of advanced engineering materials, synthesized via pulsed-electric-current-sintering related techniques, and the similarities in between those techniques are introduced in this work. This paper is focused on two major techniques; namely, the Spark Plasma Extrusion (SPE) and Current Assisted Infiltration Sintering (CAIS), which in turn are derived from the Spark Plasma Sintering (SPS) technique, all widely used by this research group. Not only the geometry but also the microstructure of thus prepared specimens might vary depending on the selected technique. The resulting specimens can be under the forms of discs (flat or thick coin-like), rivets (enlarged cylindrical bars)-like and/or disclosing interpenetrated periodic networks with regular or irregular (either coin or rivet/screw)-like specimens, respectively. As for the CAIS technique, either 3D printed ceramic frameworks or naturally synthesized porous substrates (such as bone-like structures), can be infiltrated with virtually any metal or alloy. Among the series of produced materials we can include, for example: biomaterials such as: Ti-and Mg-hydroxyapatite, pure hydroxyapatite HA, composites, e.g., Al5083-CNT ́s, just to name a few. The expanding possibilities of SPS, SPE and CAIS techniques are briefly indicated here.

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