caa a22 4500 463233239 CHVBK 20180405153248.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10853-006-1265-3 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1265-3 Characterization of carbon coatings on SiC monofilaments using Raman spectroscopy [Elektronische Daten] [Yanling Ward, Robert Young, Robert Shatwell] The axial residual stresses in the carbon coatings deposited onto different silicon carbide monofilaments have been determined experimentally using Raman spectroscopy. The stress-dependent band shift for the carbon G-band at around 1600cm−1, due to symmetric in-plane stretching mode of graphite, has been found to be −1.6cm−1/GPa. Using this calibration, the axial residual stresses in carbon coatings can be estimated from measured band shifts between the broken end and middle of the monofilaments. It was found that the stresses in the coatings of all monofilaments were compressive and between −440 and −810MPa. Modelling indicated that this was consistent with the coating stress arising from the difference in coefficients of thermal expansion of carbon and the underlying silicon carbide. The coating stress was measured as a function of distance from the broken monofilament end. It was found that the distance for the stress to build up varied greatly, from 40μm in Ultra-SCS to 500μm in SM1140+. This suggests there are significantly different shear stresses between the coatings and underlying silicon carbide in the different monofilaments. Springer Science+Business Media, LLC, 2007 Ward Yanling Materials Science Centre, School of Materials, The University of Manchester, M1 7HS, Manchester, UK aut Young Robert Materials Science Centre, School of Materials, The University of Manchester, M1 7HS, Manchester, UK aut Shatwell Robert Materials Science Centre, School of Materials, The University of Manchester, M1 7HS, Manchester, UK aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/13(2007-07-01), 5135-5141 0022-2461 42:13<5135 2007 42 10853 https://doi.org/10.1007/s10853-006-1265-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1265-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ward Yanling Materials Science Centre, School of Materials, The University of Manchester, M1 7HS, Manchester, UK aut NATIONALLICENCE 700 1- Young Robert Materials Science Centre, School of Materials, The University of Manchester, M1 7HS, Manchester, UK aut NATIONALLICENCE 700 1- Shatwell Robert Materials Science Centre, School of Materials, The University of Manchester, M1 7HS, Manchester, UK aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/13(2007-07-01), 5135-5141 0022-2461 42:13<5135 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer