Use of high temperature insulation for ceramic matrix composites in gas turbines
- Orlando, FL
- Pittsburgh, PA
- New Boston, NH
- Murrysville, PA
A ceramic composition for insulating components, made of ceramic matrix composites, of gas turbines is provided. The composition comprises a plurality of hollow oxide-based spheres of various dimensions, a phosphate binder, and at least one oxide filler powder, whereby the phosphate binder partially fills gaps between the spheres and the filler powders. The spheres are situated in the phosphate binder and the filler powders such that each sphere is in contact with at least one other sphere and the arrangement of spheres is such that the composition is dimensionally stable and chemically stable at a temperature of approximately 1600.degree. C. A stationary vane of a gas turbine comprising the composition of the present invention bonded to the outer surface of the vane is provided. A combustor comprising the composition bonded to the inner surface of the combustor is provided. A transition duct comprising the insulating coating bonded to the inner surface of the transition is provided. Because of abradable properties of the composition, a gas turbine blade tip seal comprising the composition also is provided. The composition is bonded to the inside surface of a shroud so that a blade tip carves grooves in the composition so as to create a customized seal for the turbine blade tip.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- DOE Contract Number:
- FC21-95MC32267
- Assignee:
- Siemens Westinghouse Power Corporation (Orlando, FL)
- Patent Number(s):
- US 6197424
- OSTI ID:
- 873588
- Country of Publication:
- United States
- Language:
- English
Similar Records
High temperature insulation for ceramic matrix composites
High temperature insulation for ceramic matrix composites
Related Subjects
insulation
ceramic
matrix
composites
gas
turbines
composition
insulating
components
provided
comprises
plurality
hollow
oxide-based
spheres
various
dimensions
phosphate
binder
oxide
filler
powder
whereby
partially
fills
gaps
powders
situated
sphere
contact
arrangement
dimensionally
stable
chemically
approximately
1600
degree
stationary
vane
turbine
comprising
bonded
outer
surface
combustor
inner
transition
duct
coating
abradable
properties
blade
tip
seal
inside
shroud
carves
grooves
create
customized
filler powders
ceramic matrix
matrix composites
composition comprises
ceramic composition
inside surface
turbine blade
gas turbine
inner surface
outer surface
gas turbines
dimensionally stable
blade tip
phosphate binder
matrix composite
binder partially
oxide-based spheres
partially fills
oxide filler
coating bonded
filler powder
temperature insulation
insulating coating
seal comprising
combustor comprising
fills gaps
tip seal
hollow oxide-based
chemically stable
stationary vane
/428/416/