scholarly journals Novel approach of the evaluation of electric current density during the spark plasma sintering: Effect on the densification mechanisms of B4C-based ceramics

2021 ◽  
pp. 105703
Author(s):  
Mei Zhang ◽  
Tiechui Yuan ◽  
Shenghua Deng ◽  
Ruidi Li ◽  
Zhihui Zhou ◽  
...  
Keyword(s):  
Electric Current ◽  
Spark Plasma Sintering ◽  
Current Density ◽  
Electric Current Density ◽  
Plasma Sintering ◽  
Novel Approach ◽  
Spark Plasma ◽  
Sintering Effect

The influence of the local effect of electric current on densification of tungsten powder during spark plasma sintering

2019 ◽  
Vol 356 ◽  
pp. 769-777 ◽  
Author(s):  
Shenghua Deng ◽  
Hongjin Zhao ◽  
Ruidi Li ◽  
Tiechui Yuan ◽  
Lanbo Li ◽  
...  
Keyword(s):  
Electric Current ◽  
Spark Plasma Sintering ◽  
Tungsten Powder ◽  
Local Effect ◽  
Plasma Sintering ◽  
Spark Plasma

A Novel Approach for Preparing Electrically Conductive SiAlON-TiN Composites by Spark Plasma Sintering

2008 ◽  
Vol 403 ◽  
pp. 243-244
Author(s):  
E. Ayas ◽  
Alpagut Kara ◽  
Ferhat Kara
Keyword(s):  
Spark Plasma Sintering ◽  
Sem Analysis ◽  
Tio2 Powder ◽  
Mechanical Mixing ◽  
Electrically Conductive ◽  
Plasma Sintering ◽  
Novel Approach ◽  
Spark Plasma ◽  
Xrd Studies

An effective approach for preparing electrically conductive SiAlON-TiN composites was developed. Granules of a designed composition of α- SiAlON was obtained by spray drying and coated with varying amounts of TiO2 powder homogenously by mechanical mixing. Fully dense composites were obtained by spark plasma sintering (SPS) under a pressure of 50 MPa at 1650°C for 5min. According to the SEM analysis, unique microstructures containing continuously segregated in-situ formed TiN phase in 3-D were achieved. Additionally, XRD studies revealed that all TiO2 was successfully converted to TiN. The resistivity of the α-β SiAlON (1x1011 .m) was drastically reduced with the addition of only 5 vol. % TiO2 (2x10-4 .m).

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