The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 1988
Filed:
Nov. 07, 1986
Alexei G Gavrilov, Domodedovo, Moskovskoi, SU;
Galina K Galitskaya, Moscow, SU;
Viktor P Zhed, Moscow, SU;
Elena I Kurbatova, Moscow, SU;
Andrei K Sinelschikov, Moscow, SU;
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.