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Structure and Corrosion Properties of Pvd Coatings in the System Si-AL-O-N

Published online by Cambridge University Press:  25 February 2011

Otto Knotek ,
Frank LÖffler  and
Wolfram Beele
Otto Knotek
Affiliation:
Institut fuer Werkstoffkunde B, Aachen University of Technology, Templergraben 55, W-5100 Aachen, Germany
Frank LÖffler
Affiliation:
Institut fuer Werkstoffkunde B, Aachen University of Technology, Templergraben 55, W-5100 Aachen, Germany
Wolfram Beele
Affiliation:
Institut fuer Werkstoffkunde B, Aachen University of Technology, Templergraben 55, W-5100 Aachen, Germany
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Abstract

Si-Al-O-N ceramics, especially β′-Sialon, are well known as a material offering a very good resistance against aggressive media combined with a good thermal shock behaviour. This combination recommends the Si-Al-O-N ceramics also as coating for products used in applications with high thermal gradients plus corrosion attack.

Therefore this paper presents new developments in the deposition of Si-Al-ON, especially in combination with the aircraft alloy TiAl6V4 as substrate. Investigations of the coating structure in dependence on the deposition parameters were done and the resistance against oxidation and attack of H2SO4 containing media were examined.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 287: Symposium K – Silicon Nitride Ceramics–Scientific and Technological Advances , 1992 , 539
Copyright
Copyright © Materials Research Society 1993

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References

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