Wear-resistant and oxidation-resistant turbine blade

Details Wear-resistant and oxidation-resistant turbine blade Wear-resistant and oxidation-resistant turbine blade

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/28 (2006.01) C23C 4/12 (2006.01) F01D 11/12 (2006.01)

Patent

CA 2719273

The invention relates to a wear-resistant and oxidation-resistant turbine blade (1) and also to a method for producing said blade. At least certain zones on the surface of the main blade section (2) are provided with at least one first protective coating (4, 4a) consisting of oxidation-resistant material, wherein said first, oxidation-resistant protective coating is a metallic coating (4), in particular an MCrAlY coating, which can optionally be covered by a ceramic thermal barrier coating (5). The metallic first protective coating (4) is arranged at least at the inner and outer crown edge of the blade tip (9), but not at the radially outer blade tip (9). The radially outer blade tip (9) of the turbine blade (1) consists of a second, single-layer or multi-layer wear-resistant and oxidation-resistant protective coating (5), which is built up by known laser metal forming and consists of abrasive material (6) and binder material (7), wherein said second protective coating (5) on the blade tip (9) overlaps along the outer and/or inner crown edge at least partially with the first, metallic protective coating (4) arranged there.

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