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Title:
CORROSION-RESISTANT MEMBER
Document Type and Number:
WIPO Patent Application WO/2021/182107
Kind Code:
A1
Abstract:
Provided is a corrosion-resistant member in which a corrosion-resistant coating film is less likely to be detached from a base material even when the corrosion-resistant member experiences a thermal history. The corrosion-resistant member comprises: a metal-made base material (10); and a corrosion-resistant coating (30) formed on a surface of the base material (10). The corrosion-resistant coating film (30) comprises a magnesium fluoride layer (31) and an aluminum fluoride layer (32) laminated in this order as observed from the base material (10) side. The aluminum fluoride layer (32) has a first crystalline region (32A) and a second crystalline region (32B) in each of which aluminum fluoride contained therein has a crystalline form. The first crystalline region (32A) is a region in which a regular array of diffraction spots is observed in an electron beam diffraction image obtained by the irradiation with an electron beam having a beam diameter of 10 to 20 nm, inclusive. The second crystalline region (32B) is a region in which a plurality of diffraction spots are observed but a regular array of diffraction spots is not observed in an electron beam diffraction image obtained by the irradiation with the electron beam.

Inventors:
MIYAISHI SO (JP)
OKUBO MASAHIRO (JP)
YOSHIMURA MASAYUKI (JP)
SAKANE WATARU (JP)
TANAKA TEPPEI (JP)
NAKAMURA SAEKO (JP)
YAMAKI SAORI (JP)
Application Number:
PCT/JP2021/006944
Publication Date:
September 16, 2021
Filing Date:
February 24, 2021
Export Citation:
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Assignee:
SHOWA DENKO KK (JP)
International Classes:
C23C28/04
Domestic Patent References:
WO2020008704A12020-01-09
Foreign References:
JPH0466657A1992-03-03
JP2005209771A2005-08-04
JP2001040464A2001-02-13
JPH1161410A1999-03-05
JP2013177670A2013-09-09
JP2000219574A2000-08-08
JPH09176772A1997-07-08
JP2005533368A2005-11-04
JPH1161410A1999-03-05
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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