Universität zu Köln

Klausmann, Amon, Morita, Koji, Johanns, Kurt E., Fasel, Claudia, Durst, Karsten ORCID: 0000-0002-9246-6398, Mera, Gabriela ORCID: 0000-0002-9325-8769, Riedel, Ralf ORCID: 0000-0001-6888-7208 and Ionescu, Emanuel ORCID: 0000-0002-3266-3031 (2015). Synthesis and high-temperature evolution of polysilylcarbodiimide-derived SiCN ceramic coatings. J. Eur. Ceram. Soc., 35 (14). S. 3771 - 3781. OXFORD: ELSEVIER SCI LTD. ISSN 1873-619X

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Abstract

Herein we report on the preparation and high-temperature evolution of polysilylcarbodiimides-derived SiCN ceramic coatings. Two polysilylcarbodiimide-based preceramic polymers with different molecular structures (i.e., a rather linear and a highly-branched polymer) were synthesized and their use for the preparation of sub-mu m-thick SiCN ceramic coatings was assessed. The different molecular architecture of the polysilylcarbodiimide has been shown to significantly affect the composition (e.g., the content of segregated carbon) and properties of the resulting ceramic coatings. Thus, the high-temperature crystallization behavior and the ordering of the segregated carbon phase depend on the carbon content and consequently on the preceramic polymer structure. Moreover, the content of the segregated carbon phase present within the microstructure of the prepared SiCN coatings determines their hardness and elastic properties. The low-carbon-content coating has been shown to be stiffer and have higher hardness than the carbon-rich SiCN sample. (C) 2015 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Klausmann, Amon UNSPECIFIED UNSPECIFIED UNSPECIFIED Morita, Koji UNSPECIFIED UNSPECIFIED UNSPECIFIED Johanns, Kurt E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fasel, Claudia UNSPECIFIED UNSPECIFIED UNSPECIFIED Durst, Karsten UNSPECIFIED orcid.org/0000-0002-9246-6398 UNSPECIFIED Mera, Gabriela UNSPECIFIED orcid.org/0000-0002-9325-8769 UNSPECIFIED Riedel, Ralf UNSPECIFIED orcid.org/0000-0001-6888-7208 UNSPECIFIED Ionescu, Emanuel UNSPECIFIED orcid.org/0000-0002-3266-3031 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-389277
DOI:	10.1016/j.jeurceramsoc.2015.07.013
Journal or Publication Title:	J. Eur. Ceram. Soc.
Volume:	35
Number:	14
Page Range:	S. 3771 - 3781
Date:	2015
Publisher:	ELSEVIER SCI LTD
Place of Publication:	OXFORD
ISSN:	1873-619X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language C-N CERAMICS; MECHANICAL-PROPERTIES; RAMAN; SPECTROSCOPY; ENERGETICS; BEHAVIOR; HARDNESS; MODULUS Multiple languages Materials Science, Ceramics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/38927