Process for forming solid lubricating film on iron-base alloy su

Details Process for forming solid lubricating film on iron-base alloy su Process for forming solid lubricating film on iron-base alloy su

1991-04-12

1993-06-01

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of metal

428472, 4284721, 4284722, 428408, 428685, 428688, 428689, 428697, 428698, 428699, 428704, 148317, 148318, 148319, B32B 1800

Patent

active

052158233

ABSTRACT:
In a process for forming a solid lubricating film on an iron-base substrate, an organic material having a vapor pressure of 10.sup.-4 Torr or less at room temperature is deposited on an iron-base alloy substrate in a vacuum atmosphere in a vacuum degree of 10.sup.-4 Torr or more, and simultaneously ions of a metal element having a chemical affinity to carbon is irradiated on the iron-base alloy substrate at a dose of 1.times.10.sup.16 ions/cm.sup.2 or more, the ions having an energy of 5 keV or more. Accordingly, the iron-base substrate is coated with a solid lubricating film which includes an atom mixture layer including carbide of the metal element and alloy of iron and the metal element and a carbon layer including amorphous carbon. Hence, the solid lubricating film has an excellent lubricating property as well as a high adhesion property to the iron-base substrate. Namely, the excellent lubricating property will last for a long period of time.

REFERENCES:
patent: 2207289 (1940-07-01), Fleischmann
patent: 3969130 (1976-07-01), Bokros
patent: 4237177 (1980-12-01), Slama et al.
patent: 4554208 (1985-11-01), MacIver et al.
patent: 4661409 (1987-04-01), Kieser et al.
patent: 4772513 (1988-09-01), Sakamoto et al.
patent: 4917953 (1990-04-01), Hioki et al.
patent: 4917961 (1990-04-01), Tsujii et al.

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