scholarly journals Energy efficient spark plasma sintering: Breaking the threshold of large dimension tooling energy consumption

2018 ◽  
Author(s):  
Charles Manière ◽  
Geuntak Lee ◽  
Joanna McKittrick ◽  
Eugene A. Olevsky
Keyword(s):  
Energy Consumption ◽  
Spark Plasma Sintering ◽  
Energy Efficient ◽  
Large Dimension ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Ultrahigh Temperature Flash Sintering of Binder-Less Tungsten Carbide within 6 s

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7655
Author(s):  
Huaijiu Deng ◽  
Mattia Biesuz ◽  
Monika Vilémová ◽  
Milad Kermani ◽  
Jakub Veverka ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Energy Efficient ◽  
Rapid Change ◽  
Thermal Inertia ◽  
Refractory Compounds ◽  
Flash Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Ultrahigh Temperature ◽  
Discharge Profile

We report on an ultrarapid (6 s) consolidation of binder-less WC using a novel Ultrahigh temperature Flash Sintering (UFS) approach. The UFS technique bridges the gap between electric resistance sintering (≪1 s) and flash spark plasma sintering (20–60 s). Compared to the well-established spark plasma sintering, the proposed approach results in improved energy efficiency with massive energy and time savings while maintaining a comparable relative density (94.6%) and Vickers hardness of 2124 HV. The novelty of this work relies on (i) multiple steps current discharge profile to suit the rapid change of electrical conductivity experienced by the sintering powder, (ii) upgraded low thermal inertia CFC dies and (iii) ultra-high consolidation temperature approaching 2750 °C. Compared to SPS process, the UFS process is highly energy efficient (≈200 times faster and it consumes ≈95% less energy) and it holds the promise of energy efficient and ultrafast consolidation of several conductive refractory compounds.

scholarly journals TOWARD LOW-ENERGY SPARK PLASMA SINTERING OF HOT-DEFORMED Nd-Fe-B MAGNETS

2021 ◽  
Vol 12 (2) ◽  
Author(s):  
Matic Korent ◽  
Marko Soderžnik ◽  
Urška Ročnik ◽  
Sandra Drev ◽  
Kristina Žužek Rožman ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Spark Plasma Sintering ◽  
Deformation Process ◽  
Remanent Magnetization ◽  
Maximum Energy ◽  
Low Energy ◽  
Maximum Energy Product ◽  
Energy Product ◽  
Plasma Sintering ◽  
Spark Plasma

In this work, we present a newly developed, economically efficient method for processing rare-earth Nd-Fe-B magnets based on spark plasma sintering. It makes us possible to retain the technologically essential properties of the produced magnet by consuming about 30% of the energy as compared to the conventional SPS process. A magnet with anisotropic microstructure was fabricated from MQU F commercial ribbons by low energy consumption (0.37 MJ) during the deformation process and compared to the conventionally prepared hot-deformed magnet, which consumed 3-times more energy (1.2 MJ). Both magnets were post-annealed at 650 °C for 120 min in a vacuum. After the postannealing process, the low-energy processing (LEP) hot-deformed magnet showed a coercivity of 1327 kAm-1, and remanent magnetization of 1.27 T. In comparison, the highenergy processing (HEP) hot-deformed magnet had a coercivity of 1337 kAm-1 and a remanent magnetization of 1.31 T. Complete microstructural characterization and detailed statistical analyses revealed a better texture orientation for the HEP hot-deformed magnet processed by high energy consumption, which is the main reason for the difference in remanent magnetization between the two hot-deformed magnets. The results show that, although the LEP hot-deformed magnet was processed by three times lower energy consumption than in a typical hot-deformation process, the maximum energy product is only 8 % lower than the maximum energy product of a HEP hot-deformed magnet.

Reducing electric current and energy consumption of spark plasma sintering via punch configuration design

2017 ◽  
Vol 43 (18) ◽  
pp. 17225-17228 ◽  
Author(s):  
Liqing Huang ◽  
Ma Qian ◽  
Haibo Lu ◽  
Yong Sun ◽  
Lihua Wang ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Electric Current ◽  
Spark Plasma Sintering ◽  
Configuration Design ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Simultaneous Spark Plasma Sintering of Multiple Complex Shapes

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 557 ◽  
Author(s):  
Charles Manière ◽  
Elisa Torresani ◽  
Eugene Olevsky
Keyword(s):  
Spark Plasma Sintering ◽  
Energy Efficient ◽  
Large Scale ◽  
Alumina Powder ◽  
Homogeneous Microstructure ◽  
Plasma Sintering ◽  
Complex Shapes ◽  
Spark Plasma ◽  
Thermal Confinement ◽  
The Stability

This work addresses the two great challenges of the spark plasma sintering (SPS) process: The sintering of complex shapes and the simultaneous production of multiple parts. A new controllable interface method is employed to concurrently consolidate two nickel gear shapes by SPS. A graphite deformable sub-mold is specifically designed for the mutual densification of both complex parts in a unique 40 mm powder deformation space. An energy efficient SPS configuration is developed to allow the sintering of a large-scale powder assembly under electric current lower than 900 A. The stability of the developed process is studied by electro-thermal-mechanical (ETM) simulation. The ETM simulation reveals that homogeneous densification conditions can be attained by inserting an alumina powder at the sample/punches interfaces, enabling the energy efficient heating and the thermal confinement of the nickel powder. Finally, the feasibility of the fabrication of the two near net shape gears with a very homogeneous microstructure is demonstrated.

Fabrication and Mechanical Properties of ultra fine WC-6wt.%Co by Spark Plasma Sintering Process

2011 ◽  
Vol 49 (01) ◽  
pp. 40-45 ◽  
Author(s):  
Hyun-Kuk Park ◽  
Seung-Min Lee ◽  
Hee-Jun Youn ◽  
Ki-Sang Bang ◽  
Ik-Hyun Oh
Keyword(s):  
Mechanical Properties ◽  
Spark Plasma Sintering ◽  
Sintering Process ◽  
Plasma Sintering ◽  
Spark Plasma

Effect of spark plasma sintering temperature on structure and phase composition of Ti-Al-Nb-based alloys

2017 ◽  
Vol 59 (11-12) ◽  
pp. 1033-1036 ◽  
Author(s):  
Sherzod Kurbanbekov ◽  
Mazhyn Skakov ◽  
Viktor Baklanov ◽  
Batyrzhan Karakozov
Keyword(s):  
Phase Composition ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Plasma Sintering ◽  
Spark Plasma

Fabrication of TiB2/TiC Composites by Spark Plasma Sintering

2012 ◽  
Vol 27 (9) ◽  
pp. 961-964 ◽  
Author(s):  
Zhi-Qiang MA ◽  
Ying-Hu JI ◽  
Lian-Jun WANG
Keyword(s):  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma
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