Title:
METHOD FOR PRODUCING FERRITE FILM
Document Type and Number:
WIPO Patent Application WO/2022/269779
Kind Code:
A1
Abstract:
A method for producing a ferrite film according to the present invention is characterized by comprising at least: a step (A) in which an iron plating film or an iron alloy plating film is formed on the surface of a base material; a step (B) in which the base material after the step (A) is brought into contact with an oxidation treatment agent, thereby subjecting the iron plating film or the iron alloy plating film to an oxidation treatment; and a step (C) in which the base material after the step (B) is subjected to a cooling treatment. This method for producing a ferrite film is also characterized in that: the oxidation treatment agent is a mixed solution that contains at least one basic compound and at least one nitric acid compound; and the cooling treatment is carried out by means of slow cooling at an average cooling rate of 1.5°C/minute or less.
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Inventors:
TANAKA TAKAHIRO (JP)
UEDA KAIHO (JP)
HATABE MASARU (JP)
UEDA KAIHO (JP)
HATABE MASARU (JP)
Application Number:
PCT/JP2021/023692
Publication Date:
December 29, 2022
Filing Date:
June 23, 2021
Export Citation:
Assignee:
ISHIHARA CHEMICAL CO LTD (JP)
International Classes:
C23C22/62; C23C28/00
Domestic Patent References:
| WO2016147428A1 | 2016-09-22 |
Foreign References:
| JPS62214184A | 1987-09-19 | |||
| JPS52106498A | 1977-09-07 | |||
| JPS5265408A | 1977-05-30 |
Attorney, Agent or Firm:
ISEKI Katsumori et al. (JP)
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