Abstract
Non-oxide silicon based ceramics owe their oxidation resistance to the formation of a thin silica film which separates the ceramic from oxidizing environments. This silica film can be fluxed by alkali oxides to form low melting alkali silicate corrosion products which do not provide protection. Alkali chlorides and other halides have sufficiently high vapor pressures that silica fluxing can occur without the formation of a condensed halide salt. The rates of oxidation of Si, SiC, and S13N4 are influenced by the composition of gas mixtures containing these species.
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© 1994 Springer Science+Business Media New York
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McNallan, M., Lee, S., Hsu, P. (1994). Oxidation of Silicon Based Ceramics in the Presence of Alkali Halides. In: Nickel, K.G. (eds) Corrosion of Advanced Ceramics. NATO Science Series E: (closed), vol 267. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1182-9_15
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DOI: https://doi.org/10.1007/978-94-011-1182-9_15
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