Spark plasma sintering of tantalum carbide

2010 ◽  
Vol 63 (6) ◽  
pp. 577-580 ◽  
Author(s):  
Evan Khaleghi ◽  
Yen-Shan Lin ◽  
Marc A. Meyers ◽  
Eugene A. Olevsky
Keyword(s):  
Spark Plasma Sintering ◽  
Tantalum Carbide ◽  
Plasma Sintering ◽  
Spark Plasma

Solid solution synthesis of tantalum carbide-hafnium carbide by spark plasma sintering

2017 ◽  
Vol 100 (5) ◽  
pp. 1853-1862 ◽  
Author(s):  
Cheng Zhang ◽  
Ankur Gupta ◽  
Sudipta Seal ◽  
Benjamin Boesl ◽  
Arvind Agarwal
Keyword(s):  
Solid Solution ◽  
Spark Plasma Sintering ◽  
Tantalum Carbide ◽  
Hafnium Carbide ◽  
Solution Synthesis ◽  
Plasma Sintering ◽  
Spark Plasma

Recent Advances on Bulk Tantalum Carbide Produced by Solvothermal Synthesis and Spark Plasma Sintering

2012 ◽  
Vol 1485 ◽  
pp. 9-20 ◽  
Author(s):  
Braeden M. Clark ◽  
James P. Kelly ◽  
Olivia A. Graeve
Keyword(s):  
Spark Plasma Sintering ◽  
Tantalum Carbide ◽  
Synthesis Process ◽  
Full Density ◽  
Sintering Behavior ◽  
X Ray Diffraction ◽  
Plasma Sintering ◽  
Different Temperatures ◽  
Spark Plasma ◽  
Carbon Additions

ABSTRACTThe sintering of tantalum carbide nanopowders by spark plasma sintering (SPS) is investigated. The washing procedure for the powders is modified from previous work to eliminate excess lithium in the powders that is left over from the synthesis process. The sintering behavior of the nanopowders is investigated by X-ray diffraction and scanning electron microscopy by studying specimens that were sintered to different temperatures. To improve the homogeneity of the microstructure of the specimens, milling procedures were implemented. Vaporization during sintering is observed, and the usefulness of carbon additions and systematic decreases in temperature to curb this behavior was explored. Future experiments to achieve full density and to maintain a nanostructure of the specimens include sintering with higher pressures, lower temperatures, and longer dwell times. Additives for maintaining a nanostructure and developing suitable high-temperature properties are also discussed.

scholarly journals Effect of SiC Nanowhisker on the Microstructure and Mechanical Properties of WC-Ni Cemented Carbide Prepared by Spark Plasma Sintering

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Xiaoyong Ren ◽  
Zhijian Peng ◽  
Zhiqiang Fu ◽  
Chengbiao Wang
Keyword(s):  
Mechanical Properties ◽  
Spark Plasma Sintering ◽  
Tantalum Carbide ◽  
Uniaxial Pressure ◽  
Cemented Carbides ◽  
X Ray Diffraction ◽  
Microstructure And Mechanical Properties ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Microscopy Examination

Ultrafine tungsten carbide-nickel (WC-Ni) cemented carbides with varied fractions of silicon carbide (SiC) nanowhisker (0–3.75 wt.%) were fabricated by spark plasma sintering at 1350°C under a uniaxial pressure of 50 MPa with the assistance of vanadium carbide (VC) and tantalum carbide (TaC) as WC grain growth inhibitors. The effects of SiC nanowhisker on the microstructure and mechanical properties of the as-prepared WC-Ni cemented carbides were investigated. X-ray diffraction analysis revealed that during spark plasma sintering (SPS) Ni may react with the applied SiC nanowhisker, forming Ni2Si and graphite. Scanning electron microscopy examination indicated that, with the addition of SiC nanowhisker, the average WC grain size decreased from 400 to 350 nm. However, with the additional fractions of SiC nanowhisker, more and more Si-rich aggregates appeared. With the increase in the added fraction of SiC nanowhisker, the Vickers hardness of the samples initially increased and then decreased, reaching its maximum of about 24.9 GPa when 0.75 wt.% SiC nanowhisker was added. However, the flexural strength of the sample gradually decreased with increasing addition fraction of SiC nanowhisker.

Synthesis of ultra-fine tantalum carbide powders by a combinational method of sol–gel and spark plasma sintering

2018 ◽  
Vol 44 (16) ◽  
pp. 19106-19112 ◽  
Author(s):  
Chun Liu ◽  
Weimin Wang ◽  
Qianglong He ◽  
Aiyang Wang ◽  
Jie Wu ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Sol Gel ◽  
Tantalum Carbide ◽  
Plasma Sintering ◽  
Spark Plasma

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
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