Method of applying strengthening coatings to metallic or metal-c

Details Method of applying strengthening coatings to metallic or metal-c Method of applying strengthening coatings to metallic or metal-c

1996-05-15

1998-06-02

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

427309, 427327, 4273761, 4273833, 427405, 427554, 427555, 427559, 427597, B05D 300

Patent

active

057596417

ABSTRACT:
A method of applying strengthening coatings to metallic or metal-containing surfaces is provided in which the surface (2) to which a strengthening coating is to be applied is first subjected to activation, then at least one strengthening coating layer (1) is applied to the surface thus prepared. Said layer is treated with a laser beam (3) having a diameter (d) ranging from 0.2 mm to half the diameter (d) of the laser beam (3) entering into focusing element (5), with a power of at least 0.5 kW, with a rate of relative travel (A) of the surface being treated (2) and the laser beam (3) of at least 50 mm/min, the distance (L) between the focal plane (f) of the focusing element (5) to the surface being treated (2) being less than or equal to half the focal distance (F).

REFERENCES:
patent: 3952180 (1976-04-01), Gnanamuthu
patent: 4832983 (1989-05-01), Nagatomi et al.
Laser Processing of Plasma-Sprayed NiCr Coatings, H. Bhat et al, Laser in Material Processing, 1983, pp. 176-183 (no month avail.).

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