Characterization and Spark Plasma Sintering of Mechanically Milled Aluminum-Carbon Nanotube (CNT) Composite Powders

2010 ◽  
Vol 44 (16) ◽  
pp. 1991-2003 ◽  
Author(s):  
K. Morsi ◽  
A.M.K. Esawi ◽  
P. Borah ◽  
S. Lanka ◽  
A. Sayed
Keyword(s):  
Carbon Nanotube ◽  
Spark Plasma Sintering ◽  
Composite Powders ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Influence of CFRC Insulating Plates on Spark Plasma Sintering Process

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 393
Author(s):  
Alexander M. Laptev ◽  
Jürgen Hennicke ◽  
Robert Ihl
Keyword(s):  
Temperature Distribution ◽  
Spark Plasma Sintering ◽  
Energy Demand ◽  
Composite Powders ◽  
Fem Method ◽  
Plasma Sintering ◽  
Axial Temperature ◽  
Spark Plasma ◽  
Power And Energy ◽  
The Impact

Spark Plasma Sintering (SPS) is a technology used for fast consolidation of metallic, ceramic, and composite powders. The upscaling of this technology requires a reduction in energy consumption and homogenization of temperature in compacts. The application of Carbon Fiber-Reinforced Carbon (CFRC) insulating plates between the sintering setup and the electrodes is frequently considered as a measure to attain these goals. However, the efficiency of such a practice remains largely unexplored so far. In the present paper, the impact of CFRC plates on required power, total sintering energy, and temperature distribution was investigated by experiments and by Finite Element Modeling (FEM). The study was performed at a temperature of 1000 °C with a graphite dummy mimicking an SPS setup. A rather moderate influence of CFRC plates on power and energy demand was found. Furthermore, the cooling stage becomes considerably longer. However, the application of CFRC plates leads to a significant reduction in the axial temperature gradient. The comparative analysis of experimental and modeling results showed the good capability of the FEM method for prediction of temperature distribution and required electric current. However, a discrepancy between measured and calculated voltage and power was found. This issue must be further investigated, considering the influence of AC harmonics in the DC field.

scholarly journals Mechanical Milling-Assisted Spark Plasma Sintering of Fine-Grained W-Ni-Mn Alloy

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1323 ◽  
Author(s):  
Yanlin Pan ◽  
Daoping Xiang ◽  
Ning Wang ◽  
Hui Li ◽  
Zhishuai Fan
Keyword(s):  
Spark Plasma Sintering ◽  
Mechanical Milling ◽  
Bending Strength ◽  
Sintering Temperature ◽  
Interface Fracture ◽  
Composite Powders ◽  
Fine Grained ◽  
Plasma Sintering ◽  
Binding Phase ◽  
Spark Plasma

Fine-grained W-6Ni-4Mn alloys were fabricated by spark plasma sintering (SPS) using mechanical milling W, Ni and Mn composite powders. The relative density of W-6Ni-4Mn alloy increases from 71.56% to 99.60% when it is sintered at a low temperature range of 1000–1200 °C for 3 min. The spark plasma sintering process of the alloy can be divided into three stages, which clarify the densification process of powder compacts. As the sintering temperature increases, the average W grain size increases but remains at less than 7 µm and the distribution of the binding phase is uniform. Transmission electron microscopy (TEM) observation reveals that the W-6Ni-4Mn alloy consists of the tungsten phase and the γ-(Ni, Mn, W) binding phase. As the sintering temperature increases, the Rockwell hardness and bending strength of alloys initially increases and then decreases. The optimum comprehensive hardness and bending strength of the alloy are obtained at 1150 °C. The main fracture mode of the alloys is W/W interface fracture.

Carbon nanotube frameworks by spark plasma sintering

2020 ◽  
Vol 293 ◽  
pp. 109807 ◽  
Author(s):  
Evgeniya Suslova ◽  
Serguei Savilov ◽  
Alexander Egorov ◽  
Alexey Shumyantsev ◽  
Valery Lunin
Keyword(s):  
Carbon Nanotube ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

Influence of Multi-Walled Carbon Nanotube Addition on the Hardness of NiAl-CNT and NiAl3-CNT Composites

2019 ◽  
Vol 821 ◽  
pp. 54-58
Author(s):  
Mary Ajimegoh Awotunde ◽  
Olusoji Oluremi Ayodele ◽  
Adewale Oladapo Adegbenjo ◽  
Moses Okoro ◽  
Mxolisi Brendon Shongwe ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Nanotube ◽  
Spark Plasma Sintering ◽  
Nickel Aluminide ◽  
Structural Materials ◽  
Nickel Aluminides ◽  
Two Stage ◽  
Plasma Sintering ◽  
Multi Walled Carbon Nanotube ◽  
Spark Plasma

Nickel aluminides have shown great potential as high temperature structural materials. In this study, two classes of nickel aluminide were reinforced with 0.5wt% MWCNTs. Starting powders of nickel, aluminium and MWCNTs were ball milled together using a two stage milling regime and consolidated by spark plasma sintering. The effect of MWCNT reinforcement on the hardness of two classes of nickel aluminide was investigated. Microhardness values revealed a lack of dependence on densification for the NiAl3 composites. The microhardness values of NiAl-CNT reduced with MWCNT addition whereas microhardness values of NiAl3-CNT increased with MWCNT addition.

Spark Plasma Sintering of Load-Bearing Iron–Carbon Nanotube-Tricalcium Phosphate CerMets for Orthopaedic Applications

JOM ◽  
2016 ◽  
Vol 68 (4) ◽  
pp. 1134-1142 ◽  
Author(s):  
Edgar B. Montufar ◽  
Miroslava Horynová ◽  
Mariano Casas-Luna ◽  
Sebastián Diaz-de-la-Torre ◽  
Ladislav Celko ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Spark Plasma Sintering ◽  
Tricalcium Phosphate ◽  
Load Bearing ◽  
Plasma Sintering ◽  
Spark Plasma

Processing of carbon nanotube reinforced silicon nitride composites by spark plasma sintering

2005 ◽  
Vol 65 (5) ◽  
pp. 727-733 ◽  
Author(s):  
C BALAZSI ◽  
Z SHEN ◽  
Z KONYA ◽  
Z KASZTOVSZKY ◽  
F WEBER ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Silicon Nitride ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma
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