The structure of MB2MCC (MZr, Hf, Ta) multi-phase ceramic coatings on graphite

Autor:	Huiqi Wang, Lang Liu, Zhanjun Liu, Jinhua Yang, Junzhong Wang, Jinren Song, Quangui Guo
Rok vydání:	2014
Předmět:	Materials science chemistry.chemical_element engineering.material chemistry.chemical_compound Coating chemistry visual_art Boride Materials Chemistry Ceramics and Composites engineering visual_art.visual_art_medium Graphite Wetting Ceramic Atomic number Composite material Carbon Single crystal
Zdroj:	Journal of the European Ceramic Society. 34:2895-2904
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2014.03.027
Popis:	A new class of MB2 MC C multi-phase ceramic coatings were fabricated via pilling up MB2 (M Zr, Hf, Ta) powders on the surface of graphite plates followed by heating at 2823 K. Results showed that with the increase of atomic number of Zr, Hf, and Ta, the wettability of the ceramics on graphite plates increased. The surface and inside morphology of the ceramic coatings were different from each other. The graphite inside these ceramic coatings was highly ordered with graphite interlayer distance closing to that of single crystal graphite (0.3354 nm) and some B of MB2 diffused into graphite causing the decrease of local symmetry without disrupting the graphite structure. This approach is envisaged as a promising path to develop new kinds of ultra-high temperature material coatings for carbon materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c82c003e04b162d40824b17a0001c90d https://doi.org/10.1016/j.jeurceramsoc.2014.03.027 Zobrazit plný text záznamu Full Text from ScienceDirect