公开(公告)号：US20220195605A1

公开(公告)日：2022-06-23

申请号：US17595413

申请日：2020-09-03

Applicant: SHOWA DENKO K.K.

Inventor： So MIYAISHI ,  Masahiro OKUBO ,  Masayuki YOSHIMURA ,  Wataru SAKANE ,  Teppei TANAKA ,  Saeko NAKAMURA ,  Saori YAMAKI

IPC: C23C28/04 ,  C01F5/28 ,  C01F7/50

Abstract: A corrosion-resistant member including: a metal base material (10); and a corrosion-resistant coating (30) formed on the surface of the base material (10). The corrosion-resistant coating (30) is a stack of a magnesium fluoride layer (31) and an aluminum fluoride layer (32) in order from the base material (10) side. The aluminum fluoride layer (32) is a stack of a first crystalline layer (32A) containing crystalline aluminum fluoride, an amorphous layer (32B) containing amorphous aluminum fluoride, and a second crystalline layer (32C) containing crystalline aluminum fluoride in order from the magnesium fluoride layer (31) side. The first crystalline layer (32A) and the second crystalline layer (32C) are layers in which diffraction spots are observed in electron beam diffraction images obtained by electron beam irradiation and the amorphous layer (32B) is a layer in which a halo pattern is observed in an electron beam diffraction image obtained by electron beam irradiation.

公开(公告)号：US20230235183A1

公开(公告)日：2023-07-27

申请号：US18011372

申请日：2021-06-21

Applicant: SHOWA DENKO K.K.

Inventor： So MIYAISHI ,  Masahiro OKUBO ,  Masayuki YOSHIMURA ,  Wataru SAKANE ,  Teppei TANAKA ,  Saeko NAKAMURA ,  Takuya IMAI ,  Tetsuo SAKURAI ,  Koyuki MESUDA

IPC: C09D5/08 ,  C09D1/00 ,  C09D5/00

CPC classification number: C09D5/084 ,  C09D1/00 ,  C09D5/002

Abstract: There is provided a corrosion-resistant member in which a corrosion-resistant coating film is less likely to peel off from a base material even when the corrosion-resistant member is subjected to a thermal history. The corrosion-resistant member includes: a base material (10) containing aluminum or an aluminum alloy; and a corrosion-resistant coating film (20) formed on the surface of the base material (10), in which the corrosion-resistant coating film (20) contains aluminum fluoride hydroxide AlF3−x(OH)x in which a space group belongs to R-3c, and x in the chemical formula is 0.05 or more and 1.00 or less.

公开(公告)号：US20170033367A1

公开(公告)日：2017-02-02

申请号：US15106545

申请日：2014-08-26

Applicant: SHOWA DENKO K.K.

Inventor： Tatsuya FUKUTA ,  Takashi SATO ,  Masayuki YOSHIMURA ,  Yuji ITO

IPC: H01M4/90 ,  H01M8/1004 ,  H01M4/88

CPC classification number: H01M4/9016 ,  B01D53/86 ,  B01D53/8668 ,  B01J35/02 ,  B44C1/175 ,  B44C3/02 ,  H01M4/8814 ,  H01M4/8828 ,  H01M4/8882 ,  H01M8/1004 ,  Y02E60/52

Abstract: An electrode catalyst ink composition which includes metal oxide-based electrode catalyst particles, an electrolyte, and a mixed liquid medium, wherein the mixed liquid medium contains 40 to 85% by mass of water; 5 to 30% by mass of an aqueous solvent (A) that has an evaporation rate of 2.0 or lower when the evaporation rate of water at 25° C. is 1, and a solubility parameter (SP value) of not less than 9; and 10 to 30% by mass of a monoalcohol (B) that has an evaporation rate of higher than 2.0 when the evaporation rate of water at 25° C. is 1, and not more than 3 carbon atoms, provided that the total amount of the mixed liquid medium is 100% by mass.

Abstract translation: 一种电极催化剂油墨组合物，其包含金属氧化物系电极催化剂粒子，电解质和混合液体介质，其中所述混合液体介质含有40〜85质量％的水; 当25℃下的水蒸发率为1时，蒸发速率为2.0以下的水性溶剂（A）为5〜30质量％，溶解度参数（SP值）为9以上。 以及当25℃下的水的蒸发速率为1以上且3个以下的碳原子时，蒸发率为2.0以上的一元醇（B）为10〜30质量％ 混合液体介质为100质量％。

公开(公告)号：US20220251699A1

公开(公告)日：2022-08-11

申请号：US17611768

申请日：2020-09-03

Applicant: SHOWA DENKO K.K.

Inventor： So MIYAISHI ,  Masahiro OKUBO ,  Masayuki YOSHIMURA ,  Wataru SAKANE ,  Teppei TANAKA ,  Saeko NAKAMURA ,  Saori YAMAKI

IPC: C23C14/06 ,  C23C14/35

Abstract: A corrosion-resistant member including: a metal base material (10); a corrosion-resistant coating (30) formed on the surface of the base material (10); and a buffer layer (20) formed between the base material (10) and the corrosion-resistant coating (30). The base material (10) contains a main element having the highest mass content ratio among elements contained in the base material (10) and a trace element having a mass content ratio of 1% by mass or less. The corrosion-resistant coating (30) contains at least one kind selected from magnesium fluoride, aluminum fluoride, and aluminum oxide. The buffer layer (20) contains an element of the same kind as the trace element, and the content ratio obtained by energy dispersive X-ray analysis of the element of the same kind as the trace element contained in the buffer layer (20) is 2% by mass or more and 99% by mass or less.

公开(公告)号：US20220243072A1

公开(公告)日：2022-08-04

申请号：US17612871

申请日：2021-02-24

Applicant: SHOWA DENKO K.K.

Inventor： So MIYAISHI ,  Masahiro OKUBO ,  Masayuki YOSHIMURA ,  Wataru SAKANE ,  Teppei TANAKA ,  Saeko NAKAMURA ,  Saori YAMAKI

IPC: C09D5/08 ,  C23C28/04 ,  C23C14/06 ,  C09D1/00

Abstract: A corrosion-resistant member including: a metal base material (10); and a corrosion-resistant coating (30) formed on the surface of the base material (10). The corrosion-resistant coating (30) is a stack of a magnesium fluoride layer (31) and an aluminum fluoride layer (32) in order from the base material (10) side. The aluminum fluoride layer (32) has a first crystalline region (32A) and a second crystalline region (32B) containing crystalline aluminum fluoride. The first crystalline region (32A) is a region in which diffraction spot arrays having regularity are observed in an electron beam diffraction image obtained by irradiation with electron beams having a beam diameter of 10 nm to 20 nm. The second crystalline region (32B) is a region in which a plurality of diffraction spots is observed but diffraction spot arrays having regularity are not observed in an electron beam diffraction image obtained by irradiation with the above-described electron beams.

公开(公告)号：US20170155157A1

公开(公告)日：2017-06-01

申请号：US15312992

申请日：2014-10-07

Applicant: SHOWA DENKO K.K.

Inventor： Noriyasu TEZUKA ,  Takuya IMAI ,  Masayuki YOSHIMURA ,  Masahiro OHMORI

IPC: H01M4/92 ,  C09D11/00 ,  B01J23/89

Abstract: An oxygen reduction catalyst, an ink including the catalyst, a catalyst layer including the catalyst, an electrode having the catalyst layer, a membrane electrode assembly having the catalyst layer, and a fuel cell having the membrane electrode assembly. The oxygen reduction catalyst includes titanium dioxide particles, a carbon material and a catalyst component, wherein a surface of the titanium dioxide particles is covered with zinc oxide, and the titanium dioxide particles and the carbon material each support the catalyst component.