Coating precursor materials, turbomachinery components, and methods of forming the turbomachinery components
View Patent ↗Coating precursor materials, turbomachinery components, and methods of manufacturing the components are provided. In an embodiment, by way of example only, a coating precursor material includes a solid film lubricant component and a bonding component comprising at least one eutectic mixture, said at least one eutectic mixture selected from a group consisting of barium fluoride/nickel fluoride, barium fluoride/cobalt fluoride, and barium fluoride/barium fluoride-boron oxide.
1. A coating precursor material, comprising:
a solid film lubricant component; and
a bonding component comprising at least one eutectic mixture, the at least one eutectic mixture selected from a group consisting of barium fluoride/nickel fluoride, barium fluoride/cobalt fluoride, and barium fluoride/barium fluoride-boron oxide.
2. The coating precursor material of claim 1 , wherein the solid film lubricant component comprises a material having the chemical formula M n+1 AX n , wherein M is at least one early transition metal selected from groups IIIB, IVB, VB, and VIB, A is at least one element selected from groups IIIA, IVA, VA, VIA, and VIIA, X is one or both of carbon and nitrogen, and n is an integer between 1 and 3.
3. The coating precursor material of claim 1 , wherein the solid film lubricant component comprises one or more metal sulfides, metal fluorides, and/or precious metals.
4. The coating precursor material of claim 3 , wherein a metal sulfide includes MoS 2 .
5. The coating precursor material of claim 3 , wherein a metal fluoride comprises at least one metal selected from a group consisting of a Group IA alkali earth metal, a Group IIA alkaline earth metal, a rare earth metal, and mixtures thereof.
6. The coating precursor material of claim 3 , wherein a precious metal comprises a material selected from a group consisting of silver, gold, platinum, palladium, rhenium, copper, and mixtures thereof.
7. The coating precursor material of claim 1 , further comprising at least one wear-resistant component comprising a metal oxide.
8. The coating precursor material of claim 7 , wherein the metal oxide includes a material selected from a group consisting of chromic oxide, nickel oxide, aluminum oxide, boron oxide or another metal oxide.
9. The coating precursor material of claim 1 , further comprising a non-metallic component including at least one of a ceramic, a silicate, and a binder.
10. The coating precursor material of claim 9 , wherein the ceramic comprises a material selected from a group consisting of Cr 2 O 3 , Al 2 O 3 , and TiO 2 .
11. The coating precursor material of claim 9 , wherein the silicate comprises sodium silicate.
12. The coating precursor material of claim 9 , wherein the binder comprises an organic polymer binder.
13. A turbomachinery component comprising:
a substrate; and
a coating over the substrate, the coating comprising a solid film lubricant component and a bonding component, the bonding component comprising at least one eutectic mixture selected from a group consisting of barium fluoride/nickel fluoride, barium fluoride/cobalt fluoride, and barium fluoride/barium fluoride-boron oxide.
14. The turbomachinery component of claim 13 , wherein the solid film lubricant component comprises a material having the chemical formula M n+1 AX n , wherein M is at least one early transition metal selected from groups IIIB, IVB, VB, and VIB, A is at least one element selected from groups IIIA, IVA, VA, VIA, and VIIA, X is one or both of carbon and nitrogen, and n is an integer between 1 and 3.
15. The turbomachinery component of claim 13 , wherein the solid film lubricant component comprises one or more metal sulfides, metal fluorides, and/or precious metals.
16. The turbomachinery component of claim 13 , further comprising at least one wear-resistant component comprising a metal oxide.
17. The turbomachinery component of claim 13 , wherein the turbomachinery component comprises a foil bearing.
18. A method of manufacturing a turbomachinery component, the method comprising the steps of:
applying a coating precursor material to a substrate, wherein the coating precursor material comprises a solid film lubricant component and a bonding component, and the bonding component comprises at least one eutectic mixture, the at least one eutectic mixture selected from a group consisting of barium fluoride/nickel fluoride, barium fluoride/cobalt fluoride, and barium fluoride/barium fluoride-boron oxide; and
heating the substrate to a predetermined processing temperature to form a portion of a coating over the substrate.
19. The method of claim 18 , wherein the solid film lubricant component comprises a material having the chemical formula M n+1 AX n , wherein M is at least one early transition metal selected from groups IIIB, IVB, VB, and VIB, A is at least one element selected from groups IIIA, IVA, VA, VIA, and VIIA, X is one or both of carbon and nitrogen, and n is an integer between 1 and 3.
20. The method of claim 18 , wherein the solid film lubricant component comprises one or more metal sulfides, metal fluorides, and/or precious metals.