Method for producing a metal surface

Details Method for producing a metal surface Method for producing a metal surface

1997-02-20

1999-10-12

Valentine, Donald R.

Electrolysis: processes, compositions used therein, and methods

Electrolytic erosion of a workpiece for shape or surface...

Using mask

205674, 205685, C25F 302

Patent

active

059650060

ABSTRACT:
The invention shows a surface (2) for a metal implant (1) which has a coarse structure of elevations (3) and depressions (4), with the surface (2) being permeated by a network (5) of protruding ribs which form nodes (7) and interstices or meshes (8) having an interstice width of 2 mm to 0.4 mm, while the depressions represent sections of spherical cavities (11). The nodes (7) of the ribs can protrude the furthest like mountain peaks, whereas the ribs (6) which connect two nodes (7) each form a lower lying saddle (10) if the spherical cavities penetrate one another slightly. Through coating with an electrochemically resistant protective lacquer, into which holes can be shot at a predetermined spacing without damaging the metal, with a laser for example, a coarsely structured intermediary surface can be economically provided by means of electrochemical erosion which receives a fine structure through sand blasting.

REFERENCES:
patent: 3359192 (1967-12-01), Heinrich et al.
patent: 5246530 (1993-09-01), Bugle
patent: 5258098 (1993-11-01), Wagner
patent: 5344458 (1994-09-01), Bonutti
patent: 5766238 (1998-06-01), Lau et al.

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