FERRITIC STAINLESS STEEL AND METHOD FOR MANUFACTURING SAME

A ferritic stainless steel according to one aspect of the present invention contains, in % by mass, C: 0.030% or less, Si: 0.01-1.5%, Mn: 0.01-1.00%, P: 0.050% or less, S: 0.005% or less, Cr: 15.0-25.0%, Al: 2.0-4.0%, Ni: 1.00% or less, Nb: 0.01-0. 70%, N: 0.030% or less, B: 0.0003-0.01%, REM: 0.01-...

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Bibliographische Detailangaben
Hauptverfasser:	FUJIMURA, Yoshitomo, HAMADA, Jun-ichi, HAMADA, Takahito
Format:	Patent
Sprache:	eng ; fre ; jpn
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A ferritic stainless steel according to one aspect of the present invention contains, in % by mass, C: 0.030% or less, Si: 0.01-1.5%, Mn: 0.01-1.00%, P: 0.050% or less, S: 0.005% or less, Cr: 15.0-25.0%, Al: 2.0-4.0%, Ni: 1.00% or less, Nb: 0.01-0. 70%, N: 0.030% or less, B: 0.0003-0.01%, REM: 0.01-0.20%, the balance being Fe and unavoidable impurities, and has an Al-based oxide film with a thickness of 8 nm or more and less than 20 nm on the surface. Selon un mode de réalisation de l'invention, un acier inoxydable ferritique comprend, en % en masse, ０,０３０％ ou moins de C, ０,０１ à １,５％ de Si, ０,０１ à １,００％ de Mn, ０,０５０％ ou moins de P, ０,００５％ ou moins de S, １５,０ à ２５,０％ de Cr, ２,０ à ４,０％ de Al, １,００％ ou moins de Ni, ０,０１ à ０,７０％ de Nb, ０,０３０％ ou moins de N, ０,０００３ à ０,０１％ de B et ０,０１ à ０,２０％ de REM, le reste étant constitué de Fe et des impuretés inévitables. Cet acier inoxydable ferritique présente à sa surface un film d'oxyde à base de Al de 8nm ou plus et de moins de 20nm. 本発明の一態様のフェライト系ステンレス鋼は、質量％で、Ｃ：０．０３０％以下、Ｓｉ：０．０１～１．５％、Ｍｎ：０．０１～１．００％、Ｐ：０．０５０％以下、Ｓ：０．００５％以下、Ｃｒ：１５．０～２５．０％、Ａｌ：２．０～４．０％、Ｎｉ：１．００％以下、Ｎｂ：０．０１～０．７０％、Ｎ：０．０３０％以下、Ｂ：０．０００３～０．０１％、ＲＥＭ：０．０１～０．２０％を含有し、残部がＦｅおよび不可避的不純物からなり、表面に８ｎｍ以上２０ｎｍ未満のＡｌ系酸化皮膜を有する。