Resonac Corporation

Wataru Sakane

Masayuki Yoshimura

Teppei Tanaka

Saeko Nakamura

Masahiro Okubo

So Miyaishi

Saori Yamaki

Takuya Imai

Tetsuo Sakurai

Koyuki Mesuda

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 () containing aluminum or an aluminum alloy; and a corrosion-resistant coating film () formed on the surface of the base material (), in which the corrosion-resistant coating film () contains aluminum fluoride hydroxide AlF(OH)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.

Corrosion-resistant member

A corrosion-resistant member including: a metal base material (); and a corrosion-resistant coating () formed on the surface of the base material (). The corrosion-resistant coating () is a stack of a magnesium fluoride layer () and an aluminum fluoride layer () in order from the base material () side. The aluminum fluoride layer () has a first crystalline region (A) and a second crystalline region (B) containing crystalline aluminum fluoride. The first crystalline region (A) 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 (B) 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.

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

Growing community of inventors

Tokyo, Japan

Wataru Sakane