Ferritic stainless steel sheet having excellent anti-bacterial activity, and method for producing same

Abstract

A ferritic stainless steel sheet. An first embodiment of the ferritic stainless steel sheet contains 0.1 to 5.0 mass% inclusive of Cu and has a Cu-rich layer on the surface thereof, wherein the maximum concentration of Cu (Cm) in the Cu-rich layer is 10.0 mass% or more and the Fe / Cr ratio at a position at which the maximum concentration of Cu (Cm) is stood at, as observed from the surface of the steel sheet in the thickness direction, is 2.4 or more. A second embodiment of the ferritic stainless steel sheet contains 0.1 to 5.0 mass% inclusive of Cu and has a Cu-rich layer on the surface thereof, wherein the maximum concentration of Cu (Cm) in the Cu-rich layer is 18.0 mass% or more.

Description

technical field

[0001] The present invention relates to a ferritic stainless steel plate excellent in antibacterial properties and a method for producing the same. A ferritic stainless steel plate preferably used as a raw material for sanitation equipment such as toilet seats, medical equipment, and heating equipment, and building materials, and a manufacturing method thereof.

[0002] This application claims priority based on Japanese Patent Application No. 2012-282843 filed on December 26, 2012 and Japanese Patent Application No. 2013-148950 filed on July 17, 2013, and the contents thereof are incorporated herein. Background technique

[0003] Ferritic stainless steel sheets have been widely used in household appliances such as kitchen equipment such as sinks and side panels of microwave ovens. Recently, it is also used in medical equipment such as sinks and interior building materials such as railings from the viewpoint of cleanliness, decorative appearance, and aestheti...

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