Title:
携行型時計用磁石、特に、ネオジム－鉄－ホウ素磁石、のための耐腐食保護
Document Type and Number:
Japanese Patent JP7232302
Kind Code:
B2
Abstract:
A method for protecting a watch magnet against corrosion, wherein a magnet is provided, and that a surface preparation operation is carried out on the magnet, before subjecting it to an ion implantation treatment, in order to create an impervious surface layer acting as a barrier against oxidation with all of the surface bonds saturated by the implanted ions, in order to prevent the corrosion of the magnet in a humid environment, under the usual conditions for wearing watches.
Inventors:
Alexandra Amheld-Hidalgo
Alexi Boulmé
Pielie veuille
Alexi Boulmé
Pielie veuille
Application Number:
JP2021164485A
Publication Date:
March 02, 2023
Filing Date:
October 06, 2021
Export Citation:
Assignee:
Coma Deal S.A.
International Classes:
H01F41/02; C04B41/80; C23C8/38
Domestic Patent References:
| JP61039507A | ||||
| JP4254313A | ||||
| JP2005285793A | ||||
| JP2014099988A |
Foreign References:
| CN106756859A | ||||
| CN106756857A | ||||
| WO2020071446A1 | ||||
| CN111441017A |
Attorney, Agent or Firm:
Shigeki Yamakawa
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