Editorial of special issue on ultra high temperature ceramic matrix composite: Design and application

2019 ◽  
Vol 35 (12) ◽  
pp. 2868
Author(s):  
Litong Zhang ◽  
Ralf Riedel
Keyword(s):  
High Temperature ◽  
Matrix Composite ◽  
Ceramic Matrix Composite ◽  
Ceramic Matrix ◽  
Special Issue ◽  
Design And Application ◽  
Ultra High Temperature

scholarly journals Cyclic oxidation behaviour of ZrB2 -20 vol.%MoSi2 based ultra-high temperature ceramic matrix composite between 1100°C and 1300°C

2021 ◽  
Author(s):  
Mainak Saha
Keyword(s):  
High Temperature ◽  
Cyclic Oxidation ◽  
Ceramic Matrix Composite ◽  
Oxidation Kinetic ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Oxidation Behaviour ◽  
Matrix Composites ◽  
X Ray Diffraction ◽  
Ultra High Temperature

While descending through different layers of atmosphere with tremendously high velocities, hypersonic re-entry nosecones fabricated using ultra-high temperature ceramic matrix composites (UHTCMCs) are subjected to repeated thermal shocks. This necessitates extensive investigations on the cyclic oxidation behaviour of UHTCMCs at temperatures ranging from 1100°C to 1300°C (service temperature of the nosecones). To this end, the present work is aimed at investigating the cyclic oxidation behaviour of ZrB2 -20 vol.%MoSi2 (ZM20) UHTCMC (a very widely investigated ZM CMC) by carrying out cycles for 6h, at 1cycle/h and estimating oxidation kinetic law. This has been followed by extensive characterisation using X-Ray Diffraction (XRD) to indicate the phases formed during oxidation and Scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), in order to determine the chemical composition of the oxides formed between 1100°C and 1300°C.

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