Protective coating for turbine blades

Details Protective coating for turbine blades Protective coating for turbine blades

1998-09-11

2000-11-21

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

416241B, 428668, 428679, 428678, 428680, F01D 528, B32B 1500

Patent

active

061493899

ABSTRACT:
On a turbine blade a protective corrosion resistant surface layer consisting of a MCrAlY alloy is generated by melting the surface of the turbine blade with the MCrAlY alloy uniformly distributed over the surface of the turbine blade by a pulsed electron beam to a depth of 5-50 .mu.m whereby a smooth surface is generated.

REFERENCES:
patent: 4451299 (1984-05-01), Smeggil et al.
patent: 4668527 (1987-05-01), Fujita et al.
patent: 5547769 (1996-08-01), Schmitz
E. Bedogni et al., "Laser and Electron Beam in Surface Hardening of Turbine Blades", Laser Advanced Materials Processing, May 1987, pp. 567-572.

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