Formation of ZrC–SiC Composites from the Molecular Scale through the Synthesis of Multielement Polymers

In the field of non-oxide ceramic composites, and by using the polymer-derived ceramic route, understanding the relationship between the thermal behaviour of the preceramic polymers and their structure, leading to the mechanisms involved, is crucial. To investigate the role of Zr on the fabrication...

Descripción completa

Detalles Bibliográficos
Autores principales: Bouzat, Fabien, Lucas, Romain, Leconte, Yann, Foucaud, Sylvie, Champavier, Yves, Coelho Diogo, Cristina, Babonneau, Florence
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8306986/
https://www.ncbi.nlm.nih.gov/pubmed/34300819
http://dx.doi.org/10.3390/ma14143901
_version_ 1783727942999736320
author Bouzat, Fabien
Lucas, Romain
Leconte, Yann
Foucaud, Sylvie
Champavier, Yves
Coelho Diogo, Cristina
Babonneau, Florence
author_facet Bouzat, Fabien
Lucas, Romain
Leconte, Yann
Foucaud, Sylvie
Champavier, Yves
Coelho Diogo, Cristina
Babonneau, Florence
author_sort Bouzat, Fabien
collection PubMed
description In the field of non-oxide ceramic composites, and by using the polymer-derived ceramic route, understanding the relationship between the thermal behaviour of the preceramic polymers and their structure, leading to the mechanisms involved, is crucial. To investigate the role of Zr on the fabrication of ZrC–SiC composites, linear or hyperbranched polycarbosilanes and polyzirconocarbosilanes were synthesised through either “click-chemistry” or hydrosilylation reactions. Then, the thermal behaviours of these polymeric structures were considered, notably to understand the impact of Zr on the thermal path going to the composites. The inorganic materials were characterised by thermogravimetry-mass spectrometry (TG-MS), X-ray diffraction (XRD), and scanning electron microscopy (SEM). To link the macromolecular structure to the organisation involved during the ceramisation process, eight temperature domains were highlighted on the TG analyses, and a four-step mechanism was proposed for the polymers synthesised by a hydrosilylation reaction, as they displayed better ceramic yields. Globally, the introduction of Zr in the polymer had several effects on the temperature fragmentation mechanisms of the organometallic polymeric structures: (i) instead of stepwise mass losses, continuous fragment release prevailed; (ii) the stability of preceramic polymers was impacted, with relatively good ceramic yields; (iii) it modulated the chemical composition of the generated composites as it led, inter alia, to the consumption of free carbon.
format Online
Article
Text
id pubmed-8306986
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-83069862021-07-25 Formation of ZrC–SiC Composites from the Molecular Scale through the Synthesis of Multielement Polymers Bouzat, Fabien Lucas, Romain Leconte, Yann Foucaud, Sylvie Champavier, Yves Coelho Diogo, Cristina Babonneau, Florence Materials (Basel) Article In the field of non-oxide ceramic composites, and by using the polymer-derived ceramic route, understanding the relationship between the thermal behaviour of the preceramic polymers and their structure, leading to the mechanisms involved, is crucial. To investigate the role of Zr on the fabrication of ZrC–SiC composites, linear or hyperbranched polycarbosilanes and polyzirconocarbosilanes were synthesised through either “click-chemistry” or hydrosilylation reactions. Then, the thermal behaviours of these polymeric structures were considered, notably to understand the impact of Zr on the thermal path going to the composites. The inorganic materials were characterised by thermogravimetry-mass spectrometry (TG-MS), X-ray diffraction (XRD), and scanning electron microscopy (SEM). To link the macromolecular structure to the organisation involved during the ceramisation process, eight temperature domains were highlighted on the TG analyses, and a four-step mechanism was proposed for the polymers synthesised by a hydrosilylation reaction, as they displayed better ceramic yields. Globally, the introduction of Zr in the polymer had several effects on the temperature fragmentation mechanisms of the organometallic polymeric structures: (i) instead of stepwise mass losses, continuous fragment release prevailed; (ii) the stability of preceramic polymers was impacted, with relatively good ceramic yields; (iii) it modulated the chemical composition of the generated composites as it led, inter alia, to the consumption of free carbon. MDPI 2021-07-13 /pmc/articles/PMC8306986/ /pubmed/34300819 http://dx.doi.org/10.3390/ma14143901 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bouzat, Fabien
Lucas, Romain
Leconte, Yann
Foucaud, Sylvie
Champavier, Yves
Coelho Diogo, Cristina
Babonneau, Florence
Formation of ZrC–SiC Composites from the Molecular Scale through the Synthesis of Multielement Polymers
title Formation of ZrC–SiC Composites from the Molecular Scale through the Synthesis of Multielement Polymers
title_full Formation of ZrC–SiC Composites from the Molecular Scale through the Synthesis of Multielement Polymers
title_fullStr Formation of ZrC–SiC Composites from the Molecular Scale through the Synthesis of Multielement Polymers
title_full_unstemmed Formation of ZrC–SiC Composites from the Molecular Scale through the Synthesis of Multielement Polymers
title_short Formation of ZrC–SiC Composites from the Molecular Scale through the Synthesis of Multielement Polymers
title_sort formation of zrc–sic composites from the molecular scale through the synthesis of multielement polymers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8306986/
https://www.ncbi.nlm.nih.gov/pubmed/34300819
http://dx.doi.org/10.3390/ma14143901
work_keys_str_mv AT bouzatfabien formationofzrcsiccompositesfromthemolecularscalethroughthesynthesisofmultielementpolymers
AT lucasromain formationofzrcsiccompositesfromthemolecularscalethroughthesynthesisofmultielementpolymers
AT leconteyann formationofzrcsiccompositesfromthemolecularscalethroughthesynthesisofmultielementpolymers
AT foucaudsylvie formationofzrcsiccompositesfromthemolecularscalethroughthesynthesisofmultielementpolymers
AT champavieryves formationofzrcsiccompositesfromthemolecularscalethroughthesynthesisofmultielementpolymers
AT coelhodiogocristina formationofzrcsiccompositesfromthemolecularscalethroughthesynthesisofmultielementpolymers
AT babonneauflorence formationofzrcsiccompositesfromthemolecularscalethroughthesynthesisofmultielementpolymers