Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9770120 | Journal of Molecular Structure | 2005 | 6 Pages |
Abstract
Carbon-carbon composites (C/C) exhibit excellent high-temperature mechanical properties but their air oxidation limits their use at temperatures above 500 °C to inert atmosphere. Variety of coatings has been used to protect C/C composites from oxidation. In this work C/C composite substrates were covered with ceramic multilayer coats by electrophoretic deposition from ceramic sols such as silica sol, alumina sol and silica-lumina sol. Sol particles were of nano-sized dimensions. Deposited coats were annealed at 900-1500 °C. Oxidation tests at 600 °C reveal that the best protection of C/C composite against oxidation gives the multilayer coat formed by three or four electrophoretic depositions. The phase composition in the final annealed layers was analyzed by Infrared spectroscopy (FTIR) and by X-ray diffraction analysis (XRD). Morphology and chemical composition was observed using Scanning electron microscopy (SEM) with energy dispersive X-ray microanalysis (EDS).
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
A. Stoch, W. Jastrze¸bski, E. DÅugoÅ, G.J. Stoch, S. BÅażewicz, A. Adamczyk, K. TatarzyÅska,