A method for coating a sealing fin (2) on a component of a turbomachine, in particular on a blade tip (6) of a blade (1) of a turbomachine, with armoring (3, 30, 300), and to a corresponding component, in which method a blade (1) having at least one sealing fin (2) and a slurry which comprises particles of MCrAlY or particles for forming an MCrAlY layer (31), where M is nickel and/or cobalt, are provided, the slurry is applied onto the sealing fin and dried, and the sealing fin with the applied slurry is subjected to an aluminizing process so that the MCrAlY layer comprises an Al-rich sublayer (32).

An article treatment method includes providing an article including a substrate composed of a substrate material having an undesirable substrate feature. The undesirable substrate feature may include a recess, and a portion of the substrate containing the undesirable substrate feature may be removed to form a recess in a surface of the substrate. A feedstock mixture including a filler material and a liquid carrier is introduced into an HVAF apparatus having a combustion gas stream with a temperature greater than the melting point of the filler material. The filler material is applied to the recess by expelling the filler material while maintained at a temperature less than the melting point of the filler material by the liquid carrier. The filler material and an area of the substrate bordering the recess are heat treated, forming a treated portion.

An abradable coating for a turbomachine, as well as a turbomachine module and a turbomachine including such an abradable coating, the abradable coating including, with a content of greater than 50% by volume, an inorganic compound whose Mohs hardness is less than 6 and whose melting temperature is greater than 900 C.

Cooling holes in a turbine component, such as a blade, vane or combustor transition, are formed in and surrounded by a micro surface feature (MSF) that protects the adjoining thermal barrier coating (TBC) from delamination or crack propagation during the hole formation or during engine operation. The MSF effectively functions as a circumferential sleeve around the cooling hole margin so that relatively more friable TBC material that would otherwise define the cooling hole margin is not directly exposed to coolant fluid exhausting the hole, foreign object damage (FOD) or contact with cooling hole formation tooling when fabricating the hole through the TBC layer. The MSF is formed as a projection from the component substrate or during subsequent application of a metallic bond coat (BC) layer.

A component for a turbine engine includes a body with an exterior surface abutting a combustion flowpath for a combustion gas flow through the turbine engine, a cooling passage defined within the body, and a trench on the exterior surface. The trench includes a plurality of outlets, and a plurality of cooling holes extending from the cooling passage to the corresponding plurality of outlets.

A de-icing device to supply de-icing air to a turbomachine separation nozzle extending along a longitudinal axis, the turbomachine comprising: a separation nozzle positioned downstream from a turbomachine fan and comprises an internal casing and an external casing which form a separation between a primary flow vein for a primary stream and a secondary flow vein for a secondary stream, the internal casing and the external casing defining an inter-vein space; turbomachine guide vanes secured by screws to the internal casing, the screws extend into the inter-vein space, the de-icing device positioned in the inter-vein space and comprising an air inlet; an air outlet; a plurality of channels extending from the air inlet toward the air outlet; the channels arranged in relation to one another such that they extend from the air inlet toward the air outlets, passing between the screws for securing the guide vanes.

An abradable coating/thermal barrier coating suitable for use with jet engine CMC components is described which comprises a material selected from hafnon, mixtures of hafnon and zircon, and rare earth disilicates (RE.sub.2Si.sub.2O.sub.7), wherein RE is Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu. The coating has a porosity gradient wherein the porosity decreases in a radial direction. The porosity gradient provides a progressively increasing wear resistance to slow the rate of rub interaction. The porosity gradient also reduces the thermal gradient through the coating thereby reducing the formation of thermal stresses within the coating and any underlying CMC component.