METHOD FOR TREATING FERROUS ALLOY PARTS IN ORDER TO IMPROVE THE RUBBING PROPERTIES THEREOF WITHOUT CAUSING HARDNESS LOSS OR DEFORMATION

WIPO Patent Application WO2002081769

A3

The invention relates to a method for obtaining a ferrous alloy part that supports a very high seizure load with very low dispersion. The inventive method consists in covering said part with an iron sulphide coating having an appropriate thickness and Fe/S ratio. Said method is characterised in that the coating is selected from among those with surfaces having a fractal dimension that is at least equal to 2.6. The invention also relates to the parts obtained using said method.

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CHOMER STEPHANE (FR)
TERRAT JEAN-PAUL (FR)

PCT/FR2002/001091

December 12, 2002

March 28, 2002

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CT STEPHANOIS DE RECH S MECHAN (FR)
CHOMER STEPHANE (FR)
TERRAT JEAN-PAUL (FR)

C23C22/68; C25D9/04; C25D15/02; (IPC1-7): C23C14/06; C23C16/30; C25D9/04

ANTONUCCI P L ET AL: "Fractal surface characterization of chalcogenide electrodeposits", MATERIALS SCIENCE AND ENGINEERING B, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 38, no. 1, 1 March 1996 (1996-03-01), pages 9 - 15, XP004017420, ISSN: 0921-5107
VAZQUEZ L ET AL: "Scanning tunneling microscopy characterization of the morphology of Fe/C multilayers grown on silicon substrates", JOURNAL OF APPLIED PHYSICS, 1 JAN. 1994, USA, vol. 75, no. 1, pages 248 - 254, XP002177388, ISSN: 0021-8979

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