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  • An effective growth of hierarchical BNNTs/SiC fibers with enhanced interfacial properties

Köken, Deniz, Top, Ayşemin, Çakmak Cebeci, Fevzi, Turgut, Fırat, Bozali, Beyza, Ozden Yenigun, Elif, Solak, Nuri and Cebeci, Hülya, 2021, Journal Article, An effective growth of hierarchical BNNTs/SiC fibers with enhanced interfacial properties Composites Science and Technology, 216. pp. 1-10. ISSN 0266-3538

Abstract or Description:

Tailoring the SiC fiber-matrix interface in micron-sized fibers is crucial to attaining enhanced mechanical properties in ceramic reinforced composites. Herein, the authors report the growth of boron nitride nanotubes (BNNT) onto SiC fibers (SiCf), creating a fuzzy fiber architecture to promote the surface area for a defined load path fiber to the matrix and improve the mechanical properties of these structures. Successful BNNT-growth is achieved by a boron oxide chemical vapor deposition method combined with growth vapor trapping with optimum parameters of 1200 °C and 1 hour, comparatively low temperature to those reported in the literature. The strength loss of SiCf after exposure to 1200 °C was attributed to high process temperature, similar to what has been observed in the literature. Hence, BNNT growth does not lead to additional strength loss on these fibers measured by a single fiber tensile test. Moreover, through this direct growth method, grown BNNTs utilize a surface-anchored BNNTs/SiCf, creating a good matrix adhesion to prevent fiber-fiber sliding and pullout and increasing the interfacial shear strength (IFSS) with epoxy. Furthermore, microbond tests show that fuzzy BNNTs/SiCf architecture increased IFSS by at least 87.8% compared to as-received SiCf.

Official URL: https://www.sciencedirect.com/science/article/pii/...
Subjects: Creative Arts and Design > W200 Design studies > W230 Clothing/Fashion Design > W231 Textile Design
School or Centre: Other
School of Design
Identification Number or DOI: 10.1016/j.compscitech.2021.109033
Uncontrolled Keywords: nano-structures, Ceramic fibers, interface/interphase, Mechanical testing
SWORD Depositor: Unnamed user with username publicationrouter
Date Deposited: 21 Oct 2021 14:36
Last Modified: 30 May 2025 23:03
URI: https://researchonline.rca.ac.uk/id/eprint/4869
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