초록 ▼

A variable stator vane assembly for use in a compressor section of a turbine engine having a plurality of movable metallic stator vanes and a method for making a variable stator vane assembly. The variable stator vane assembly includes a metallic stator casing supporting the vanes and a bushing syst

A variable stator vane assembly for use in a compressor section of a turbine engine having a plurality of movable metallic stator vanes and a method for making a variable stator vane assembly. The variable stator vane assembly includes a metallic stator casing supporting the vanes and a bushing system positioned between the stator vanes and the stator casings. The bushing system includes a bushing fabricated from a material selected from the group consisting of metal, ceramic or combinations thereof. The variable stator vane further including a titanium nitride wear coating disposed on a surface of the vanes in contact with the bushing system.

대표청구항 ▼

What is claimed is: 1. A variable stator vane assembly for use in a compressor section of a turbine engine, comprising: a plurality of movable metallic stator vanes; a metallic stator casing supporting the vanes; a bushing system positioned between the stator vanes and the stator casings, the bushi

What is claimed is: 1. A variable stator vane assembly for use in a compressor section of a turbine engine, comprising: a plurality of movable metallic stator vanes; a metallic stator casing supporting the vanes; a bushing system positioned between the stator vanes and the stator casings, the bushing system comprising a bushing, the bushing comprising a material selected from the group consisting of metal, ceramic or combinations thereof; and a wear coating disposed on a surface of the vanes in contact with the bushing system, the wear coating comprising titanium nitride. 2. The stator vane assembly of claim 1, wherein the titanium nitride comprises a material selected from the group consisting of TiN, TiAlCrN, TiAlN and combinations thereof. 3. The stator vane assembly of claim 2, wherein the titanium nitride comprises a material selected from the group consisting of TiAlCrN. 4. The stator vane assembly of claim 1, wherein each vane further includes the wear coating on a surface of an airfoil of the vanes. 5. The stator assembly of claim 1, wherein the wear coating is applied to a thickness of from about 0.0002 to about 0.010 inches. 6. The stator assembly of claim 1, wherein the vane having the wear coating disposed thereon has a fatigue strength greater than or equal to 90% of the fatigue strength of an uncoated vane. 7. The stator assembly of claim 6, wherein the vane having the wear coating disposed thereon has a fatigue strength greater than or equal to 95% of the fatigue strength of an uncoated vane. 8. The stator assembly of claim 1 further including an antifriction coating applied along the interface between the coated vane and the bushing assembly. 9. A variable stator vane assembly for use in a compressor section of a turbine engine, comprising: a plurality of movable metallic stator vanes, the vane comprising a wear resistant coating; a metallic stator casing supporting the vanes; a bushing system positioned between the stator vanes and the stator casings, the bushing system comprising a bushing, the bushing comprising a material selected from the group consisting of metal, ceramic or combinations thereof; a wear coating disposed on a surface of the vanes in contact with the bushing system, the wear coating comprising titanium nitride; and an antifriction coating is disposed on one or more of the vane and the bushing systems. 10. The stator vane assembly of claim 9, wherein the titanium nitride comprises a material selected from the group consisting of TiN, TiAlCrN, TiAlN and combinations thereof. 11. The stator vane assembly of claim 10, wherein the titanium nitride comprises a material selected from the group consisting of TiAlCrN. 12. The stator vane assembly of claim 9, wherein each vane further includes the wear coating on a surface of an airfoil of the vanes. 13. The stator assembly of claim 9, wherein the wear coating is applied to a thickness of from about 0.0002 to about 0.010 inches. 14. The stator assembly of claim 9, wherein the vane having the wear coating disposed thereon has a fatigue strength greater than or equal to 90% of the fatigue strength of an uncoated vane. 15. The stator assembly of claim 14, wherein the vane having the wear coating disposed thereon has a fatigue strength greater than or equal to 95% of the fatigue strength of an uncoated vane. 16. The stator assembly of claim 9, further including an antifriction coating applied on a surface of one or both of the vane and the bushing system. 17. The stator assembly of claim 16, wherein the antifriction coating is a titanium oxide binder that further includes a friction modifying agent uniformly dispersed through the coating. 18. The stator assembly of claim 17, wherein the friction modifying agent comprises tungsten disulfide. 19. A method for coating a bushing of a variable stator vane assembly comprising: providing a stator vane having a trunnion portion and an airfoil portion; and applying a wear coating comprising titanium nitride on a surface of the vane to provide a coated trunnion portion and an airfoil portion having an increased resistance to wear and erosion. 20. The method of claim 19, wherein the titanium nitride comprises a material selected from the group consisting of TiN, TiAlCrN, TiAlN and combinations thereof. 21. The method of claim 20, wherein the titanium nitride comprises a material selected from the group consisting of TiAlCrN. 22. The method of claim 19, wherein the wear coating is applied to a thickness of from about 0.0002 to about 0.010 inches. 23. The method of claim 19, wherein the vane having the wear coating disposed thereon has a fatigue strength greater than or equal to 90% of the fatigue strength of an uncoated vane. 24. The method of claim 23, wherein the vane having the wear coating disposed thereon has a fatigue strength greater than or equal to 95% of the fatigue strength of an uncoated vane.