What type of materials are used to make up the different sections such as the linings of the combustion chambers in a gas turbine engine. Do these type of materials vary for the different types of gas turbine Engines such as the multiple-can type, annular and cannular.
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2 Answers
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If you are asking about combustor liners specifically (as opposed to the hot section in general), the ones I am familiar with are cobalt-based superalloys.
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This is more of an engineering question than an aviation question, but since some aviators may be interested in knowing exactly what is in those turbines I will answer.
There are three main types of refractory alloys commonly used for high-temperature components in turbine engines. They are:
ODS (oxide dispersion strengthened superalloys)
CMC (ceramic matrix composites)
intermetallic post transition alloys
Of the intermetallics that are used, there are two main types commonly used: NiAl (nickel aluminum) and TiAl (titanium aluminum).
answered Jan 28, 2017 at 17:14