Stainless steel sheet for fuel cell separators and production method therefor
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United States of America Patent
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Aug 10, 2021
Grant Date -
Oct 29, 2020
app pub date -
Apr 2, 2018
filing date -
Apr 25, 2017
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Abstract
A stainless steel sheet for fuel cell separators comprises a predetermined chemical composition, wherein the stainless steel sheet has a textured structure at a surface thereof, an average interval between projected parts of the textured structure being 20 nm or more and 200 nm or less, and a ratio [Cr]/[Fe] of an atomic concentration of Cr existing in chemical form other than metal to an atomic concentration of Fe existing in chemical form other than metal at the surface of the stainless steel sheet is 2.0 or more.
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