Corrosion-inhibiting protection for watch magnets, in particular neodymium-iron-boron magnets

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United States of America

PATENT NO 12012651
SERIAL NO

17449675

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Abstract

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A method for protecting a neodymium-iron-boron watch magnet against corrosion is provided. The method includes a sandblasting treatment of the watch magnet surface following by an ion implantation in an oxygen plasma or a nitrogen plasma to obtain an impervious surface layer with all of the surface bonds saturated by the implanted ions acting as a barrier against oxidation and preventing corrosion of the watch magnet in a humid environment, under the usual conditions for wearing watches.

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Patent Owner(s)

Patent OwnerAddress
COMADUR SACOL-DES-ROCHES 33 LE LOCLE 2400

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amherd-Hidalgo, Alexandra Neuchatel, CH 1 0
Boulmay, Alexis Morteau, FR 9 3
Vuille, Pierry Les Emibois, CH 58 84

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