A ceramic material including at least erbium oxide (Er2O3)-stabilized zirconium oxide (ZrO2). The erbium oxide-stabilized zirconium oxide can be used as ceramic thermal barrier layer. Crack resistance of such ceramic materials is considerably increased by using erbium oxide-stabilized zirconium oxide.

Disclosed is a multi-phase abradable coating including a ceramic matrix and a dislocator phase.

A space filler for forming a fibrous preform may comprise an additively manufactured ceramic material. The additively manufactured ceramic material may define a plurality of pores. A shape of the additively manufactured ceramic material may complement a shape of a void formed by fibrous regions of the fibrous preform.

The use of different ceramic layers allows different configurations of gas turbines to be produced each of which is optimized for a respective use of base load operation or peak load operation.

The task is to provide a thermal barrier coating film (13) which exhibits high durability even in a gas turbine that is used under a molten salt environment, such as a heavy oil fired gas turbine, and which can be efficiently formed at low cost without requiring complicated processes, and a thermal barrier coating film (13) configures a turbine member includes a ceramic material thermally sprayed and formed on a base material (10) made of a heat resistant alloy, in which ytterbia partially stabilized zirconia is used as the ceramic material of the film (13), and the porosity of the film (13) is 5% or more and less than 8%.

An erosion and CMAS resistant coating arranged on a TBC coated substrate and including at least one porous vertically cracked (PVC) coating layer providing lower thermal conductivity and being disposed over a layer of MCrAlY wherein M represents Ni, Co or their combinations. At least one dense vertically cracked (DVC) erosion and CMAS resistant coating layer is deposited over the at least one PVC coating layer.

A powder of fused particles. The powder includes, in percentage by weight based on the oxides, more than 98% of a stabilized oxide selected from stabilized zirconium oxides, stabilized hafnium oxides and mixtures thereof, the stabilized oxide being stabilized by a stabilizer selected from the oxides of Y, Ca, Ce, Sc, Mg, In, La, Gd, Nd, Sm, Dy, Er, Yb, Eu, Pr, and Ta, called stabilizing oxides, and the mixtures of these stabilizing oxides. The powder has: a median particle size D.sub.50 under 15 m, a 90th percentile of the particle sizes, D.sub.90, under 30 m, and a size dispersion index (D.sub.90D.sub.10)/D.sub.10 below 2, and a relative density above 90%. The percentiles D.sub.n of the powder are the particle sizes corresponding to the percentages, by number, of n %, on the cumulative distribution curve of the powder particle size and the particle sizes are classified by increasing order.

An article that includes a substrate; a first layer including yttria and zirconia or hafnia, where the first layer has a columnar microstructure and includes predominately the zirconia or hafnia; a second layer on the first layer, the second layer including zirconia or hafnia, ytterbia, samaria, and at least one of lutetia, scandia, ceria, neodymia, europia, and gadolinia, where the second layer includes predominately zirconia or hafnia, and where the second layer has a columnar microstructure; and a third layer on the second layer, the third layer including zirconia or hafnia, ytterbia, samaria, and a rare earth oxide including at least one of lutetia, scandia, ceria, neodymia, europia, and gadolinia, where the third layer has a dense microstructure and has a lower porosity than the second layer.

An example high-performance system may include an example high-performance component. The high-performance component may include a substrate defining a channel. The channel defines a leading ramp and a trailing ramp. The example high-performance component includes an abradable track between the leading and the trailing ramps. The abradable track includes a porous abradable composition. The example high-performance system may include a rotating component configured to contact and abrade the abradable track. An example technique for forming the abradable track includes thermal spraying a precursor composition at the channel to form the abradable track.

A ceramic material is provided by deliberately choosing the additions of oxides to form zirconium oxide, in particular for the use of a layer system which has a high resistance to sintering, high expansion tolerance and low thermal conductivity.