Spark plasma sintering of WC-Ti powder mixtures and properties of obtained composites

2022 ◽  
Author(s):  
Dariusz Garbiec ◽  
Alexander M. Laptev ◽  
Volf Leshchynsky ◽  
Maria Wiśniewska ◽  
Paweł Figiel ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Powder Mixtures ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Ti Powder

Fabrication and Thermoelectric Properties of Magneli Phases by Adding Ti into TiO2

2011 ◽  
Vol 415-417 ◽  
pp. 1291-1296 ◽  
Author(s):  
Yun Lu ◽  
Yusuke Matsuda ◽  
Katsuhiro Sagara ◽  
Liang Hao ◽  
Takahito Otomitsu ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Spark Plasma Sintering ◽  
Thermoelectric Properties ◽  
Thermoelectric Performance ◽  
Mixed Powder ◽  
Magnéli Phases ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Ti Powder ◽  
Ti Addition

In the present study, the TiO2-Ti compacts with Magneli phases TinO2n-1 were fabricated using the mixed powder of TiO2 powder and addition Ti powder by spark plasma sintering (SPS). The composition and the crystal types of Magneli phases TinO2n-1 were examined. The results showed that various Magneli phases TinO2n-1 (single or multi Magneli phases) with the composition of Ti1+yO2-x were obtained. The Magneli phases TinO2n-1 were formed in the transformation from the mother phase rutile TiO2 to TiO with increase in Ti addition fraction. In addition, the thermoelectric properties of the sintered compacts were also measured. The electrical resistivity of the sintered compacts decreased with increase in Ti addition fraction. The thermoelectric performance of the sintered compacts was improved by the formation of Magneli phases TinO2n-1 with the composition of Ti1+yO2-x.

scholarly journals Fabrication of Densified W-Ti by Reaction Treatment and Spark Plasma Sintering of WO3-TiH2 Powder Mixtures

2018 ◽  
Vol 28 (9) ◽  
pp. 511-515
Author(s):  
Hyunji Kang ◽  
◽  
Heun Joo Kim ◽  
Ju-Yeon Han ◽  
Yunju Lee ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Powder Mixtures ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Dense nanostructured materials obtained by spark plasma sintering and field activated pressure assisted synthesis starting from mechanically activated powder mixtures

2004 ◽  
Vol 36 (3) ◽  
pp. 155-164 ◽  
Author(s):  
F. Bernard ◽  
Gallet le ◽  
N. Spinassou ◽  
S. Paris ◽  
E. Gaffet ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Nanostructured Materials ◽  
Bulk Materials ◽  
Mechanical Pressure ◽  
Powder Mixtures ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
One Step ◽  
Nanostructured Ceramics ◽  
Simultaneous Influence

The preparation of highly dense bulk materials with a grain size in the range of a few to a few hundreds nanometers is currently the objective of numerous studies. In our research we have achieved a measure of success in this regard by using the methods of mechanically-activated, field-activated, pressure-assisted synthesis, MAFAPAS, which has been patented, and mechanically-activated spark plasma sintering, MASPS. Both methods, which consist of the combination of a mechanical activation step followed by a consolidation step under the simultaneous influence of an electric field and mechanical pressure, have led to the formation of dense nanostructured ceramics, intermetallics, and composites, such as, MoSi2 FeAl, NbAl3, and TiN-TiB2. In this report, both one-step synthesis-consolidation and sintering of different nanostructured materials by SPS and FAPAS were investigated. .

Fabrication of Ti-Based Biodegradable Material Composites Prepared by Spark Plasma Sintering Method

2010 ◽  
Vol 654-656 ◽  
pp. 2158-2161 ◽  
Author(s):  
Eri Miura-Fujiwara ◽  
Takeshi Teramoto ◽  
Hisashi Sato ◽  
Equo Kobayashi ◽  
Yoshimi Watanabe
Keyword(s):  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Holding Time ◽  
X Ray Diffraction ◽  
Powder Mixtures ◽  
X Ray ◽  
Porous Ti ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

This study aims at producing porous Ti filled with biodegradable materials for biomedical implants by means of spark plasma sintering method (SPS). To improve bone fixation and to obtain appropriate Young’s modulus as a medical implant material, we applied -tri calcium phosphate (-TCP) to the Ti-based composite. Ti/-TCP powder mixtures were sintered by SPS under applied stress of 45MPa with various temperatures and holding time. Vickers hardness (Hv) of obtained composite increased with increasing the holding time up to 10 min, and saturated hardness was approximately 750 Hv, which is extremely higher than that of bulk Ti. Hardness also increased as sintering temperature increased up to 1473 K. From the results of microstructure observations by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDXS), O- and P- containing Ti surrounded around Ti particle, and O diffused into Ti particle to a certain extent. X-ray diffraction results indicated several kinds of Ti-O and/or Ti-P formed in the specimen. Results indicated that it is the brittle phases formed during sintering that increased the hardness.

ChemInform Abstract: Synthesis of Ti3AlC2by Spark Plasma Sintering of Mechanically Milled 3Ti/xAl/2C Powder Mixtures.

ChemInform ◽  
2009 ◽  
Vol 40 (24) ◽  
Author(s):  
Chen Yang ◽  
Songzhe Jin ◽  
Baoyan Liang ◽  
Guojun Liu ◽  
Lianfeng Duan ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Powder Mixtures ◽  
Plasma Sintering ◽  
Spark Plasma
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