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Li, L.*; Miyamoto, Goro*; Zhang, Y.*; Li, M.*; Morooka, Satoshi; Oikawa, Katsunari*; Tomota, Yo*; Furuhara, Tadashi*
Journal of Materials Science & Technology, 184, p.221 - 234, 2024/06
Times Cited Count:0 Percentile:0(Materials Science, Multidisciplinary)Imai, Makoto*; Shirai, Toshizo*; Saito, Manabu*; Haruyama, Yoichi*; Ito, Akio*; Imanishi, Nobutsugu*; Fukuzawa, Fumio*; Kubo, Hirotaka
Journal of Plasma and Fusion Research SERIES, Vol.7, p.323 - 326, 2006/00
no abstracts in English
Konishi, Hiroyuki; Yamashita, Masato*; Uchida, Hitoshi*; Mizuki, Junichiro
Materials Transactions, 46(2), p.329 - 336, 2005/02
Times Cited Count:28 Percentile:80.32(Materials Science, Multidisciplinary)Chloride in atmosphere considerably reduces the corrosion resistance of conventional weathering steel containing a small amount of Cr. Ni is an effective anticorrosive element for improving the corrosion resistance of steel in a Cl-rich environment. In order to clarify the structure of the protective rust layer of weathering steel, Cl and Fe K-edge X-ray absorption near edge structure (XANES) spectra of atmospheric corrosion products (rust) formed on Fe, Fe-Ni and Fe-Cr alloys exposed to Cl-rich atmosphere were measured. The Fe K-XANES measurements enable the characterization of a mixture of iron oxides such as rust. The chemical composition of the rust was determined by performing pattern fitting of the measured spectra. All the rust is composed mainly of goethite, akaganite, lepidocrocite and magnetite. Among these iron oxides, akaganite in particular is the major component in the rust. Additionally, the amount of akaganite in the rust of Fe-Ni alloy is much greater than that in rust of Fe-Cr alloy. Akaganite is generally considered to facilitate the corrosion of steel, but our results indicate that akaganite in the rust of Fe-Ni alloy is quantitatively different from that in rust of Fe-Cr alloy and does not facilitate the corrosion of steel. The shoulder peak observed in Cl K-XANES spectra reveals that the rust contains a chloride other than akaganite. The energy of the shoulder peak does not correspond to that of any well-known chlorides. In the measured spectra, there is no proof that Cl, by combining with the alloying element, inhibits the alloying element from acting in corrosion resistance. The shoulder peak appears only when the content of the alloying element is lower than a certain value. This suggests that the generation of the unidentified chloride is related to the corrosion rate of steel.
Konishi, Hiroyuki; Yamashita, Masato*; Uchida, Hitoshi*; Mizuki, Junichiro
Materials Transactions, 45(12), p.3356 - 3359, 2004/12
Times Cited Count:10 Percentile:53.05(Materials Science, Multidisciplinary)Cl K-edge XANES measurements of atmospheric corrosion products (rust) formed on Fe, Fe-Ni and Fe-Cr alloys in chloride pollution have been performed using synchrotron radiation in order to clarify roles of anticorrosive alloying elements and of Cl in the corrosion resistance of weathering steel. The spectra of binary alloys show a shoulder structure near the absorption edge. The intensity of the shoulder peak depends on the kind and amount of the alloying element, whereas the energy position is invariant. This indicates that Cl is not combined directly with alloying elements in the rust.
Konno, Chikara; Fischer, U.*; Perel, R.*
Journal of Nuclear Science and Technology, 39(Suppl.2), p.1045 - 1048, 2002/08
no abstracts in English
Li, Y.; Baba, Yuji; Sekiguchi, Tetsuhiro
Corrosion Science, 43(5), p.903 - 917, 2001/05
Times Cited Count:14 Percentile:62.23(Materials Science, Multidisciplinary)no abstracts in English
Li, Y.; Baba, Yuji; Sekiguchi, Tetsuhiro
Journal of Materials Science, 35(24), p.6123 - 6130, 2000/12
Times Cited Count:3 Percentile:17.27(Materials Science, Multidisciplinary)no abstracts in English
Nagasaki, Takanori; ; Ono, Hideo
Journal of Nuclear Materials, 191-194, p.258 - 262, 1992/00
no abstracts in English
Minato, Kazuo; Ogawa, Toru; Kashimura, Satoru; Fukuda, Kosaku; ; ;
Journal of Nuclear Materials, 175, p.14 - 19, 1990/00
Times Cited Count:2 Percentile:31.33(Materials Science, Multidisciplinary)no abstracts in English
; Yamamoto, Katsumune; ; ;
Radioisotopes, 35(12), p.619 - 624, 1986/12
no abstracts in English
Tsukada, Kineo*; Tanaka, Shigeya*; Tomita, Yoshiaki*; Maruyama, Michiko*
Nuclear Physics A, 125, p.641 - 653, 1969/00
no abstracts in English