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Structure and properties of Ti(IV)-doped zinc hydroxychloride rusts formed at various temperatures |
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| Authors: | Hidekazu Tanaka Kyohei Tashima Kazuhiko Kandori Tatsuo Ishikawa Takenori Nakayama |
| Affiliation: | aDepartment of Material Science, Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan;bSchool of Chemistry, Osaka University of Education, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582, Japan;cDepartment of Education, Faculty of Human Development and Education, Kobe Shinwa Women’s University, 7-13-1 Kita-machi, Suzurandai, Kita-ku, Kobe, Hyogo 651-1111, Japan;dMaterials Research Laboratory, Kobe Steel, LTD., 5-5 Takatsukadai 1, Nishi-ku, Kobe, Hyogo 615-2271, Japan |
| Abstract: | To simulate the atmospheric corrosion of steels galvanized with Ti–Zn alloys under different atmospheric temperatures, Ti(IV)-doped zinc hydroxychloride (Zn5(OH)8Cl2·H2O: ZHC) was prepared at various aging temperatures of 6–120 °C. Adding the Ti(IV) inhibited the crystallization and particle growth of ZHC, showing a minimum at 50 °C. Higher aging temperature promoted the formation of TiO2 nano-particles. Elevating the aging temperature suppressed the adsorption of H2O and CO2 on Ti(IV)-doped ZHC. These results suggest that the alloying Ti in galvanized steel forms compact zinc rust layer at various atmospheric temperatures in marine environment, which would lead to the enhancement of corrosion resistance. |
| Keywords: | A. Zinc A. Titanium B. XRD B. TEM C. Atmospheric corrosion C. Rust |
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