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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 12, Number 5
BKCSDE 12(5)
May 20, 1991

Title	Stainless Steel Surface Oxidized in Strong Oxidizing Solution
Author	Kyoung-Chul Lee, Kyoung-Hee Ham, Woon-Sun Ahn*
Keywords
Abstract	Stainless steel 304 2B and BA are oxidized in 2.5 M CrO3/ 5.0 M H2SO4 solution, and elemental composition and oxidized state of the surface region is analyzed as a function of the surface depth using X-ray photoelectron spectroscopy. It is found that Fe and Cr are preferentially oxidized and diffuse outward following the oxidation. Element Ni, the third major component of the steel is not oxidized and remains deep under the surface. It is also found that the oxidized Fe dissolves considerably into the solution thereby enriching the gas-oxide interface with Cr.
Page	520 - 524
Full Text	PDF

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