TY - JOUR
T1 - Native oxide layers formed on the surface of ultra high-purity iron and copper investigated by angle resolved XPS
AU - Suzuki, S.
AU - Ishikawa, Y.
AU - Isshiki, M.
AU - Waseda, Y.
PY - 1997/11
Y1 - 1997/11
N2 - Angle resolved X-ray photoelectron spectroscopy (AR-XPS) has been used for characterizing native oxide layers formed on the surface of ultra high-purity iron and copper by exposure to air at room temperature. Thickness of an oxide layer formed on the surface of ultra high-purity iron is found to be thicker than that for ultra high-purity copper in the initial stage of oxidation and almost unchanged by air exposure time. On the other hand, thickness of an oxide layer formed on ultra high-purity copper is found to increase with increasing air exposure time. These results are consistent with spectral information for ultra high-purity iron and copper exposed to air; the chemical state of Fe in the surface of ultra high-purity iron is almost independent of exposure time, whereas the chemical state varies in the surface of ultra high-purity copper by exposure for a long term.
AB - Angle resolved X-ray photoelectron spectroscopy (AR-XPS) has been used for characterizing native oxide layers formed on the surface of ultra high-purity iron and copper by exposure to air at room temperature. Thickness of an oxide layer formed on the surface of ultra high-purity iron is found to be thicker than that for ultra high-purity copper in the initial stage of oxidation and almost unchanged by air exposure time. On the other hand, thickness of an oxide layer formed on ultra high-purity copper is found to increase with increasing air exposure time. These results are consistent with spectral information for ultra high-purity iron and copper exposed to air; the chemical state of Fe in the surface of ultra high-purity iron is almost independent of exposure time, whereas the chemical state varies in the surface of ultra high-purity copper by exposure for a long term.
KW - Angle resolved X-ray photoelectron spectroscopy
KW - Initial oxidation
KW - Ultra high-purity copper
KW - Ultra high-purity iron
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U2 - 10.2320/matertrans1989.38.1004
DO - 10.2320/matertrans1989.38.1004
M3 - Article
AN - SCOPUS:0031271002
SN - 0916-1821
VL - 38
SP - 1004
EP - 1009
JO - materials transactions, jim
JF - materials transactions, jim
IS - 11
ER -