TY - JOUR
T1 - Optimization of SPS Parameters and Graphene Content with the Aim of Improving Densification and Flexural Strength of ZrB2-SiC Composites
T2 - Optimization of SPS Parameters and Graphene Content with the Aim of Improving Densification and Flexural Strength of ZrB2-SiC Composites: Mehdipour, Balak, Azizieh, and Shahedi Asl
AU - Mehdipour, Meysam
AU - Balak, Zohre
AU - Azizieh, Mahdi
AU - Shahedi Asl, Mehdi
N1 - Publisher Copyright:
© The Minerals, Metals & Materials Society 2024.
PY - 2024
Y1 - 2024
N2 - This study aims to investigate the significance of spark plasma sintering (SPS) variables and the number of graphene nanoplatelets (GNP) on the densification, flexural strength, and microstructure of ZrB2-25 vol.% nano-sized SiC ceramics. Analysis of variance (ANOVA) and Taguchi method were conducted to find the optimal value of selected parameters on three levels. The three-point bending test and Archimedes principles were chosen to calculate flexural strength and relative density, respectively. Scanning electron microscope (SEM), energy-dispersive spectroscopy (EDS), and X-ray diffractometry (XRD) were employed for the microstructural/phase investigations. Nearly full densification (99.8 ± 0.1%) and the highest flexural strength (610 ± 43 MPa) with 6.4 µm mean grain size were obtained at optimum SPS parameters (1900°C, 6 min holding time, and 20 MPa external pressure) by adding 7.5 wt.% GNP.
AB - This study aims to investigate the significance of spark plasma sintering (SPS) variables and the number of graphene nanoplatelets (GNP) on the densification, flexural strength, and microstructure of ZrB2-25 vol.% nano-sized SiC ceramics. Analysis of variance (ANOVA) and Taguchi method were conducted to find the optimal value of selected parameters on three levels. The three-point bending test and Archimedes principles were chosen to calculate flexural strength and relative density, respectively. Scanning electron microscope (SEM), energy-dispersive spectroscopy (EDS), and X-ray diffractometry (XRD) were employed for the microstructural/phase investigations. Nearly full densification (99.8 ± 0.1%) and the highest flexural strength (610 ± 43 MPa) with 6.4 µm mean grain size were obtained at optimum SPS parameters (1900°C, 6 min holding time, and 20 MPa external pressure) by adding 7.5 wt.% GNP.
UR - http://www.scopus.com/inward/record.url?scp=85211469358&partnerID=8YFLogxK
U2 - 10.1007/s11837-024-07013-3
DO - 10.1007/s11837-024-07013-3
M3 - Article
AN - SCOPUS:85211469358
SN - 1047-4838
JO - JOM
JF - JOM
ER -