Abradable strain-tolerant ceramic coated turbine shroud and...

Details Abradable strain-tolerant ceramic coated turbine shroud and... Abradable strain-tolerant ceramic coated turbine shroud and...

F - Mech Eng,Light,Heat,Weapons

01

D

170/75

F01D 11/08 (2006.01) C23C 4/02 (2006.01) C23C 28/00 (2006.01) F01D 11/12 (2006.01)

Patent

CA 1273298

ABRADABLE STRAIN-TOLERANT CERAMIC COATED TURBINE SHROUD AND METHOD ABSTRACT OF THE DISCLOSURE An abradable ceramic coated turbine shroud structure includes a grid of slant-steps isolated by grooves in a superalloy metal shroud substrate. A thin NiCrAlY bonding layer is formed on the machined slant-steps. A stabilized zirconia layer is plasma sprayed on the bonding layer at a sufficiently large spray angle to cause formation of deep shadow gaps in the zirconia layer. The shadow gaps provide a high degree of thermal strain tolerance, avoiding spalling. The exposed surface of the zirconia layer is machined nearly to the shadow gap ends. The turbine blade tips are treated to minimize blade tip wear during initial abrading of the zirconia layer. The procedure results in very close blade tip-to-shroud tolerances after the initial abrading.

537723

Affiliated with

Also associated with

Rating

Abradable strain-tolerant ceramic coated turbine shroud and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Abradable strain-tolerant ceramic coated turbine shroud and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abradable strain-tolerant ceramic coated turbine shroud and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1248043