10.12762/2011.AL03-06
Drawin, S.
S.
Drawin
Justin, J.F.
J.F.
Justin
Advanced Lightweight Silicide and Nitride Based Materials for Turbo-Engine Applications
ONERA
2011
Article
2011
en
10.12762/2011.al03
13 pages
PDF
Journal Aerospace Lab, Issue 3, November 2011; ISSN: 2107-6596
Refractory metal silicides and nitride-based ceramics combine two properties
that may lead to substantial reductions in aircraft fuel consumption: compared
to the most advanced nickel-based superalloys presently used in aeronautical
turbines, they can withstand higher temperatures and may have lower densities.
Niobium silicide-based alloys and silicon nitride / molybdenum disilicide
composites are currently being developed for turbine hot section components for
both aircraft engines and land-based turbines. This paper presents the processing
techniques, the microstructural features and the mechanical and physical
properties at low and high temperatures as well as the oxidation behaviour of
these materials. Prospects in composition optimisation, manufacturing processes
and control of the microstructure for further improvements are discussed.
Journal Aerospace Lab, Issue 3, November 2011; ISSN: 2107-6596