Spark plasma sintering processed α−SiAlON bonded tungsten carbide: Densification, microstructure and tribomechanical properties

2020 ◽  
Vol 248 ◽  
pp. 122955
Author(s):  
Soumya Sarkar ◽  
Mita Biswas ◽  
Rupa Halder ◽  
Siddhartha Bandyopadhyay
Keyword(s):  
Tungsten Carbide ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Tribomechanical Properties

scholarly journals Effect of initial particle size and various composition on the spark plasma sintering of binderless tungsten carbide

2021 ◽  
Vol 1758 (1) ◽  
pp. 012022
Author(s):  
E A Lantsev ◽  
N V Malekhonova ◽  
V N Chuvil`deev ◽  
A V Nokhrin ◽  
M S Boldin ◽  
...  
Keyword(s):  
Particle Size ◽  
Tungsten Carbide ◽  
Spark Plasma Sintering ◽  
Initial Particle ◽  
Initial Particle Size ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals The Effect of Sintering Temperature on Microstructure and Properties of 94wt% WC - 3wt% TiC - 6wt% Co Sintered by Spark Plasma Sintering

2021 ◽  
Author(s):  
Vahid Aghaali ◽  
Touradj Ebadzadeh ◽  
Seyed Mohammad Zahraee ◽  
Seyed Mohammad Mirkazemi
Keyword(s):  
Fracture Surface ◽  
Tungsten Carbide ◽  
Grain Growth ◽  
Spark Plasma Sintering ◽  
Apparent Density ◽  
Sintering Temperature ◽  
Total Density ◽  
Microstructure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma

Abstract Cemented carbide 94wt% WC − 3wt% TiC − 6wt% Co was sintered by spark plasma sintering at various temperatures of 1200, 1300, and 1400°C and the effect of sintering temperature on the microstructure and properties of this type of hard metals, such as total density, apparent density, hardness, and fracture surface were measured and observed using Field Emission-Scanning Electron Microscopy(FE-SEM), Optical Microscopy (OM), X-ray diffractometry (XRD) and mechanical test instruments. The results showed that the apparent density of the samples increased with increasing sintering temperature from 1200℃ to1300℃ from 13.98 g/cm3 to 14.23 g/cm3, respectively. But in the case of sample sintered at 1400℃, the density was reduced to 14.20 g/cm3. Also, micro-hardness results showed that the hardness of sintered samples increased with the increase of sintering temperature. For the sample sintered at 1200°C the hardness value of 1746.41HV was obtained which increased with increasing sintering temperature from 1300℃ to 1400℃ from 2094.33HV to 2280.97HV, respectively. At the optimum sintering temperature, it was found that TiC inhibited the grain growth of tungsten carbide and increased the hardness values. In addition, as expected, the grain growth of tungsten carbide increased with increasing sintering temperatures. Examination of the fracture surface of sintered samples at different temperatures also showed that brittle fracture involves fracture.

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