A gas turbine engine component formed of material having phononic regions. The phononic regions are formed of anisotropic nanostructures that are oriented in different directions than the bulk of the material forming the gas turbine engine component. The phononic regions modify the behavior of the phonons and manage heat conduction.

A part made of composite material includes fiber reinforcement including silicon carbide fibers presenting an oxygen content less than or equal to 1% in atomic percentage; and a matrix present in the pores of the fiber reinforcement and including at least one sintered silicate phase including at least one rare earth silicate, mullite, or a mixture of mullite and of at least one rare earth silicate, the matrix including at least a first phase including mullite and a second phase, different from the first phase, including at least one rare earth silicate.

Embodiments of the disclosure relate to articles, coated chamber components and methods of coating chamber components with a low volatile coating. The low volatile coating can include a rare earth metal-containing layer that coats all surfaces of a component (e.g., a high temperature heater).

A turbine assembly is provided. The turbine assembly includes a gas turbine engine including at least one hot gas path component formed at least partially from a ceramic matrix composite material. The turbine assembly also includes a treatment system positioned to receive a flow of exhaust gas from the gas turbine engine. The treatment system is configured to remove water from the flow of exhaust gas to form a flow of treated exhaust gas, and to channel the flow of treated exhaust gas towards the at least one hot gas path component. The at least one hot gas path component includes a plurality of cooling holes for channeling the flow of treated exhaust gas therethrough, such that a protective film is formed over the at least one hot gas path component.

A gas turbine engine component formed of material having phononic regions. The phononic regions are formed of void nanostructures. The phononic regions modify the behavior of the phonons and manage heat conduction.

The corrosion and erosion resistance of ceramic heat shield elements is improved by the use of yttrium oxide on aluminum oxide as a layer or substrate material is provided. A heat is disclosed having aluminum oxide in the substrate or as a layer on a substrate, wherein yttrium oxide, particularly only yttrium oxide, is present as the outermost layer, particularly directly on the aluminum oxide.

A gas turbine engine component formed of material having phononic regions. The phononic regions are formed of alloys or allotropes of the material. The phononic regions modify the behavior of the phonons and control heat conduction.

The invention relates to a refractory ceramic batch for the production of an unformed refractory ceramic batch, the use of a batch of this kind for lining metallurgical melting vessels and also a metallurgical melting vessel which is lined with an unformed refractory ceramic product based on a batch of this kind.

An unshaped product including a particulate mixture containing: a coarse fraction, representing >50%<91% of particulate mixture, in mass percentage, and containing particles size 50 m, coarse particles, and matrix fraction, forming remainder up to 100% of particulate mixture, and containing particles sizes <50 m, product having chemical analysis, in mass percentage based on oxides of product, such: 45%<Al.sub.2O.sub.3, 7.5%<SiO.sub.2<35%, 0%ZrO.sub.2<33%, providing 10%<SiO.sub.2+ZrO.sub.2<54%, 0.15%<B.sub.2O.sub.3<8%, other oxides: <6%, Al.sub.2O.sub.3 forming remainder up to 100%, coarse fraction including more than 15% coarse particles having size >1 mm, in mass percentage based on particulate mixture, matrix fraction having a chemical analysis, in mass percentage based on oxides of matrix fraction, such: Al.sub.2O.sub.3+SiO.sub.2+ZrO.sub.2>86%, providing 35%<Al.sub.2O.sub.3.

A flow element for fluidic contact with a hot gas flow inside an aircraft engine includes: a base material, which has a hot gas surface that faces the gas flow and a remote surface that is remote from the gas flow, the base material being completely surrounded by a chroming layer on the hot gas surface and on the remote surface; an adhesive layer on the chroming layer in first portions; an alitising layer, the alitising layer being arranged on the adhesive layer in the first portions; and a thermal barrier layer being arranged on the alitising layer in the first portions. The alitising layer is arranged on the chroming layer in second portions that do not have an adhesive layer, the chroming layer and the alitising layer forming a chroming-alitising layer in the second portions.