Combustion turbine component having bond coating and associated methods
View Patent ↗A combustion turbine component includes a combustion turbine component substrate and a bond coating on the combustion turbine component substrate. The bond coating may include M n+1 AX n (n=1,2,3) where M is selected from groups IIIB, IVB, VB, VIB, and VII of the periodic table of elements and mixtures thereof, where A is selected from groups IIIA, IVA, VA, and VIA of the periodic table of elements and mixtures thereof, and where X includes at least one of carbon and nitrogen. A thermal barrier coating may be on the bond coating.
1. A combustion turbine component comprising:
a combustion turbine component substrate;
a bond coating on said combustion turbine component substrate, said bond coating comprising M n+1 AX n (n=1,2,3) where M comprises at least one of scandium, yttrium, lanthanum, actinium, rutherfordium, manganese, technetium, rhenium, tungsten, dubnium, seaborgium, and bohrium, where A is selected from groups IIIA, IVA, VA, and VIA of the periodic table of elements and mixtures thereof, and where X comprises at least one of carbon and nitrogen;
said bond coating further comprising Cr 3 AlC 2 ; and
a thermal barrier coating on said bond coating.
2. A combustion turbine component as in claim 1 wherein said bond coating has a nanolaminate microstructure.
3. A combustion turbine component as in Claim 1 wherein said bond coating has a thickness of less than 200 μm.
4. A combustion turbine component as in claim 1 wherein said bond coating further comprises at least one of Ti 3 SiC 2 , Ti 2 AlC, and Cr 2 AlC.
5. A combustion turbine component as in claim 1 wherein said thermal barrier coating comprises a ceramic thermal barrier coating.
6. A combustion turbine component as in Claim 1 wherein said combustion turbine component substrate comprises QCrAlY, with Q being selected from the group comprising Fe, Co, Ni, and mixtures thereof, and Y being selected from the group comprising elements other than Fe, Co, Ni, and mixtures thereof.
7. A combustion turbine component comprising:
a combustion turbine component substrate;
a bond coating on said combustion turbine component substrate, said bond coating comprising Cr 3 AlC 2 ; and
a ceramic thermal barrier coating on said bond coating.
8. A combustion turbine component as in claim 7 wherein said bond coating has a thickness of less than 200 μm.
9. A combustion turbine component as in claim 7 wherein said combustion turbine component substrate comprises QCrAlY, with Q being selected from the group comprising Fe, Co, Ni, and mixtures thereof, and Y being selected from the group comprising elements other than Fe, Co, Ni, and mixtures thereof.