High temperature SEM in-situ micromechanical testing

The quest for new materials that can resist the extreme environments required to reach the zero pollution targets is pushing the boundaries of material science. For this reason, ceramic matrix composites (CMCs) have emerged as an innovation in material science due to their interesting set of properties such as high temperature stability, high compressive strength and excellent corrosion

resistance [1]. These properties can be further enhanced by deposing nanometre thick interphases between the fibre and the matrix which activates toughening mechanisms such as crack deflection along the interphases and fibre pull out. The aim of this PhD is to characterise and understand the fracture performance of Ceramic Matrix Composites (CMCs) at high temperatures (600-1000C) using

high-temperature Scanning Electron Microscopy (SEM) in-situ micromechanical testing, with a focus on the role of interphases in enhancing toughness for application in commercial fusion reactors. In collaboration with UK Atomic Energy Authority (UKAEA), this project will not only enhance the understanding and performance of CMCs but also accelerate their application in critical hightemperature

and high-radiation environments.