Characterisation of Additive Manufactured Graphene Reinforced Cordierite Ceramics for Aerospace Applications
Topic(s) : Material science
Co-authors :
González Caballero BEATRIZ (SPAIN), Gímenez Pérez RAQUEL (SPAIN), Pastor Muro ANA , Hidalgo JAVIER (SPAIN), Berges CRISTINA (SPAIN), Hernández Santandreu MARTA , Mateo Martí EVA , Illán Andrés LORENA , Plaza Gallardo BORJA , Garcia-Martinez MARIA (SPAIN), Gemma HERRANZ (SPAIN)Abstract :
Ceramic matrix composite (CMC) have become a focal point for researchers and the aerospace industry due to their distinctive material properties. In addition, the eruption of additive manufacturing (AM) technology enables the fabrication of complex-shaped ceramic parts, reducing lead time and costs [1].
According to the literature, CMC parts offer high thermal stability and low thermal conductivity, outperforming even superalloys. Specifically, cordierite advanced ceramic, which is a good thermal shock resistance (TSR) material due to its extremely low Thermal Expansion Coefficient (CTE), and possesses low thermal conductivity combined with good mechanical and electromagnetic properties, makes a strong candidate for a wide range of applications across different sectors such as electronic, electrical, defence and aerospace [2, 3]. The incorporation of graphene as a nano-reinforcement (Figure 1) in this composite is intended to enhance its me-chanical resistance and assess diverse properties such as mechanical, electrical, functional or thermal.
Reduced graphene oxide (rGO) nanopowder addition studies employing various dispersion methods into the matrix emphasise that the initial powder mixing stage is critical for ensuring a homogeneous graphene dispersion [4].
In this study, diverse cordierite-rGO printable mixtures with increasing graphene content have been prepared in the form of pellets for parts manufacturing by Fused Pellets Fabrication (FPF) . The dispersibility and interaction of rGO at different process stages until sintering was assessed using different techniques: Differential Scanning Calorimety (DSC), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) with X-ray Energy Dispersive Spectrometry (EDX), Infrared Spectroscopy by Attenuated Total Reflection (ATR-IR), X-Ray Photoelectron Spectroscopy (XPS). Besides, electromagnetic tests were performed to evaluate the reinforcement impact within the nanocomposite and compare it with the matrix, as well as to study its suitability for aerospace applications.
According to the literature, CMC parts offer high thermal stability and low thermal conductivity, outperforming even superalloys. Specifically, cordierite advanced ceramic, which is a good thermal shock resistance (TSR) material due to its extremely low Thermal Expansion Coefficient (CTE), and possesses low thermal conductivity combined with good mechanical and electromagnetic properties, makes a strong candidate for a wide range of applications across different sectors such as electronic, electrical, defence and aerospace [2, 3]. The incorporation of graphene as a nano-reinforcement (Figure 1) in this composite is intended to enhance its me-chanical resistance and assess diverse properties such as mechanical, electrical, functional or thermal.
Reduced graphene oxide (rGO) nanopowder addition studies employing various dispersion methods into the matrix emphasise that the initial powder mixing stage is critical for ensuring a homogeneous graphene dispersion [4].
In this study, diverse cordierite-rGO printable mixtures with increasing graphene content have been prepared in the form of pellets for parts manufacturing by Fused Pellets Fabrication (FPF) . The dispersibility and interaction of rGO at different process stages until sintering was assessed using different techniques: Differential Scanning Calorimety (DSC), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) with X-ray Energy Dispersive Spectrometry (EDX), Infrared Spectroscopy by Attenuated Total Reflection (ATR-IR), X-Ray Photoelectron Spectroscopy (XPS). Besides, electromagnetic tests were performed to evaluate the reinforcement impact within the nanocomposite and compare it with the matrix, as well as to study its suitability for aerospace applications.