Method for applying wear-resistant dispersion coatings

Details Method for applying wear-resistant dispersion coatings Method for applying wear-resistant dispersion coatings

1990-12-17

1992-08-25

Padgett, Marianne

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427196, 427203, 427205, 427425, 427426, B05D 108, B05D 102, B05D 136, B05D 134

Patent

active

051417693

ABSTRACT:
Surfaces of structural components of metal or the like are protected by depositing a wear-resistant dispersion coating of a matrix metal and hard-material particles embedded in the metal matrix. The depositing is accomplished by a sequential plasma spraying and particle blasting, whereby the hard-material particles are applied separately from the plasma stream to inject the particles into the plastically still deformable matrix metal. The coating steps are performed in an evacuated chamber or in an inert gas environment. These coatings are especially suitable on the blade tips of gas turbine engines, on the sealing fins of labyrinth seals or as "rub" coatings on circumferential rotor surfaces or the like.

REFERENCES:
patent: 3020182 (1962-02-01), Daniels
patent: 3340084 (1967-09-01), Eisenlohr
patent: 3844729 (1974-10-01), Sedlatschek et al.
patent: 4160048 (1979-07-01), Jaeger
patent: 4224356 (1980-09-01), Singer
patent: 4241110 (1980-12-01), Ueda et al.
patent: 4358471 (1982-11-01), Derkacs et al.
patent: 4386112 (1983-05-01), Eaton et al.
patent: 4596718 (1986-06-01), Gruner
patent: 4740395 (1988-04-01), Tsunekawa et al.
patent: 5022455 (1991-06-01), Takeda et al.

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