Patent ID: 11859499
Assignee: OERLIKON SURFACE SOLUTIONS AG, PFäFFIKON
Field: Surface technology, coating (Chemistry)
Classification: CPC F  C  Y | IPC C  F

Claim 7:
8. A method for manufacturing the turbine engine of claim 1, comprising the steps of:
thermally spraying the abradable shroud material to the inner surface of the casing, wherein at least part of the inner surface of the casing is covered with the abradable shroud material to provide clearance control between the inner surface and the tip of the at least one turbine blade, and wherein the abradable shroud material is made of CoNiCrAlY-hBN, NiCrAl-bentonite, NiCrAl-hBN or NiCrFeAl-hBN; and
PVD coating the tip of the at least one turbine blade to be used within the casing, wherein the hard PVD coating on the tip of the at least one turbine blade consists of a droplet-free nitride PVD coating, the nitride PVD coating comprising Me1Me2X, where:
Me1 is an element of the group formed by Ti, Cr or Zr, or a combination thereof,
Me2 is Al and/or Si, and
X is an element of the group formed by N, or N and O, or N and B, or N and O and B.