Process for deposition of a wear-resistant coating onto a cuttin

Details Process for deposition of a wear-resistant coating onto a cuttin Process for deposition of a wear-resistant coating onto a cuttin

1986-11-07

1988-03-29

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

427 37, 427283, C23C 1422

Patent

active

047341785

ABSTRACT:
A process for deposition of a wear-resistant coating onto a cutting tool made from a carbon-containing material by condensation of a substance by bombardment with ions of a cathode material evaporated in a vacuum chamber by means of an arc discharge, wherein prior to placing the cutting tool into the vacuum chamber it is immersed into a saturated solution of a salt, kept therein for 5 to 10 min and the solvent is evaporated till crystallization of the salt on the cutting tool surface occurs; heating of the cutting tool by ion bombardment is effected first to the temperature of decomposition of the salt crystals, whereafter the arc discharge is switched-off, the cutting tool is kept for 15 to 30 seconds, the arc discharged is re-energized and the heating is continued to the temperature of carbidization of the evaporated cathode material.

REFERENCES:
patent: 3783231 (1974-01-01), Sablev et al.
patent: 3793179 (1974-02-01), Sablev et al.
patent: 3993802 (1976-11-01), Polichette et al.

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