Metal surface hardening by carbide formation

Details Metal surface hardening by carbide formation Metal surface hardening by carbide formation

1985-12-17

1987-10-06

Page, Thurman K.

Coating processes

Electrical product produced

Welding electrode

219121LM, 219121LE, 219121LF, 427122, 4273761, B05D 306

Patent

active

046982370

ABSTRACT:
A method of surface hardening a metal surface in which the surface is firstly coated with a colloidal dispersion of graphite and then locally melted, in an inert atmosphere or vacuum, so that the molten metal reacts with the graphite to form a metal carbide. On resolidification, the metal carbide defines a dendritic carbide structure within the metal adjacent its surface.

REFERENCES:
patent: 2196128 (1940-04-01), Stuart
patent: 2719355 (1955-10-01), Diffenderfer
patent: 4122240 (1978-10-01), Banas et al.
patent: 4157923 (1979-06-01), Yen et al.
patent: 4212900 (1980-07-01), Serlin
patent: 4232094 (1980-11-01), Rhodes et al.

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