Meysam Mehdipour, Zohre Balak, Mahdi Azizieh, Mehdi Shahedi Asl
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引用次数: 0
Abstract
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.
期刊介绍：
JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.
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