Spark plasma sintering of wire exploded tungsten nano-powder

2007 ◽  
Author(s):  
C. Shearwood ◽  
H. B. Ng
Keyword(s):  
Spark Plasma Sintering ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Spark Plasma

ZrB2 -SiC Nano-Powder Mixture Prepared Using ZrSi2 and Modified Spark Plasma Sintering

2013 ◽  
Vol 96 (4) ◽  
pp. 1051-1054 ◽  
Author(s):  
Sea-Hoon Lee ◽  
Si-Young Choi ◽  
Hai-Doo Kim
Keyword(s):  
Spark Plasma Sintering ◽  
Powder Mixture ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Spark Plasma

Nanocrystalline ZrO2 Porous Ceramics Fabricated by SPS

2011 ◽  
Vol 306-307 ◽  
pp. 1398-1401 ◽  
Author(s):  
Di Zhang ◽  
Ming Gang Wang ◽  
Zhan Kui Zhao
Keyword(s):  
Cell Wall ◽  
Spark Plasma Sintering ◽  
Porous Ceramics ◽  
Porous Sample ◽  
Ceramic Structure ◽  
Sem Image ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Cellular Ceramic

The porous ZrO2 ceramics was prepared by spark plasma sintering (SPS) at 520 °C. A dense closed micro-cellular ceramic structure was fabricated with micron Al90Mn9Ce1 alloy powders clading by 10 wt% ZrO2 nano-powder. SEM image showed that the thickness of ceramic cell wall was 1.0 - 2.0 μm. After deep corrosion with 10% HCl, an integrity nanocrystalline ZrO2 porous sample was obtained. Based on the experimental results, the transient spark plasma sintering mechanism of micron-nano mixing powder was also studied.

Ultrafine binderless WC-based cemented carbides with varied amounts of AlN nano-powder fabricated by spark plasma sintering

2013 ◽  
Vol 41 ◽  
pp. 308-314 ◽  
Author(s):  
Xiaoyong Ren ◽  
Zhijian Peng ◽  
Ying Peng ◽  
Chengbiao Wang ◽  
Zhiqiang Fu ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Cemented Carbides ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Spark Plasma

Spark Plasma Sintering of Aluminum-Magnesium-Matrix Composites with Boron Carbide and Tungsten Nano-powder Inclusions: Modeling and Experimentation

JOM ◽  
2016 ◽  
Vol 68 (3) ◽  
pp. 908-919 ◽  
Author(s):  
E. S. Dvilis ◽  
O. L. Khasanov ◽  
V. N. Gulbin ◽  
M. S. Petyukevich ◽  
A. O. Khasanov ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Spark Plasma Sintering ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
And Tungsten

Spark plasma sintering of ultrafine WC‐10Ni‐ZrC hardmetals: Effects of adding ZrC nano‐powder

2020 ◽  
Vol 17 (3) ◽  
pp. 932-940
Author(s):  
Changchun Lv ◽  
Xiaoyong Ren ◽  
Chengbiao Wang ◽  
Zhijian Peng
Keyword(s):  
Spark Plasma Sintering ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Spark Plasma

Analysis of Mechanisms of Spark-Plasma Sintering

2008 ◽  
Vol 368-372 ◽  
pp. 1580-1584 ◽  
Author(s):  
Eugene Olevsky ◽  
S. Kandukuri ◽  
Ludo Froyen
Keyword(s):  
Spark Plasma Sintering ◽  
Rapid Heating ◽  
External Pressure ◽  
Experimental Investigations ◽  
Powder Materials ◽  
Material Transport ◽  
Simultaneous Application ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Spark Plasma

Spark-Plasma Sintering (SPS) involves rapid heating of powder by electric current with simultaneous application of external pressure. Numerous experimental investigations point to the ability of SPS to render highly-dense powder products with the potential of grain size retention. The latter ability is of significance for the consolidation of nano-powder materials where the grain growth is one of the major problems. A model for spark-plasma sintering taking into consideration various mechanisms of material transport is developed. The results of modeling agree satisfactorily with the experimental data in terms of SPS shrinkage kinetics.

Fabrication of CNT-Reinforced HAp Composites by Spark Plasma Sintering

2007 ◽  
Vol 534-536 ◽  
pp. 893-896 ◽  
Author(s):  
Swapan Kumar Sarkar ◽  
Min Ho Youn ◽  
Ik Hyun Oh ◽  
Byong Taek Lee
Keyword(s):  
Fracture Toughness ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Sintering Process ◽  
Nano Powder ◽  
Pull Out ◽  
Plasma Sintering ◽  
Phosphate Phase ◽  
Spark Plasma ◽  
Calcium Phosphate Phase

Carbon nanotube (CNT) reinforced hydroxyapatite (HAp) composites were fabricated by using the spark plasma sintering process with surfactant modified CNT and HAp nano powder. Without the dependency on sintering temperature, the main crystal phase existed with the HAp phase although a few contents of β-TCP (Tri calcium phosphate) phase were detected. The maximum fracture toughness, (1.27 MPa.m1/2) was obtained in the sample sintered at 1100 oC and on the fracture surface a typical intergranular fracture mode, as well as the pull-out pmhenomenon of CNT, was observed.

Spark plasma sintering of TiNi nano-powder

2005 ◽  
Vol 52 (6) ◽  
pp. 455-460 ◽  
Author(s):  
C. Shearwood ◽  
Y.Q. Fu ◽  
L. Yu ◽  
K.A. Khor
Keyword(s):  
Spark Plasma Sintering ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Spark Plasma

Fabrication of Mg2Si bulk by spark plasma sintering method with Mg2Si nano-powder

2013 ◽  
Vol 1490 ◽  
pp. 63-68 ◽  
Author(s):  
Koya Arai ◽  
Keishi Nishio ◽  
Norifumi Miyamoto ◽  
Kota Sunohara ◽  
Tatsuya Sakamoto ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Fine Powder ◽  
Xrd Analysis ◽  
Bulk Sample ◽  
Inert Atmosphere ◽  
Nano Powder ◽  
Plasma Sintering ◽  
Mill Equipment ◽  
Type Semiconductor ◽  
Spark Plasma

ABSTRACTMg2Si bulk was fabricated by spark plasma sintering (SPS) nano-powder, and the thermoelectric characteristics of the bulk sample were evaluated at temperatures up to 873 K. A pre-synthesized all-molten commercial polycrystalline Mg2Si source (un-doped n-type semiconductor) was pulverized into powder of 75 μm or less. To obtain nano-sized fine powder, the powder was milled using planetary ball mill equipment under an inert atmosphere. Fine Mg2Si nano-powder with a mean grain size of about 500 nm was obtained. XRD analysis confirmed that no MgO existed in the nano-powder. The fine powder was put in a graphite die to obtain a sintering body of Mg2Si and treated by SPS under vacuum conditions. The resulting Mg2Si bulk had high density and did not crack. However, the XRD analysis revealed a small amount of MgO in it. The thermoelectric properties (electrical conductivity, Seebeck coefficient, and thermal conductivity) were measured from room temperature to 873 K. The microstructure of the sintered body was observed by scanning electron microscopy. The maximum dimensionless figure of merit of a sample made from Mg2Si nano-powder was ZT = 0.67 at 873 K.

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