@article{oai:nagoya.repo.nii.ac.jp:00023714,
 author = {伊藤, 義人 and 廣畑, 幹人 and 奥野, 貴文 and 森, 達也 and 上村, 隆之 and ITOH, Yoshito and HIROHATA, Mikihito and OKUNO, Takafumi and MORI, Tatsuya and KAMIMURA, Takayuki},
 issue = {3},
 journal = {土木学会論文集A1},
 month = {Nov},
 note = {鋼材にSn（スズ）を微量添加することで耐食性を向上させたSn添加鋼が開発されている．本研究では塗装Sn添加鋼の鋼橋への適用性を明らかにするため，防食欠陥部からの腐食劣化特性の評価を行った．A塗装系とC塗装系の2種類の塗装系を用いて防食塗装した鋼板に防食欠陥部を設け，塩水噴霧複合サイクル環境促進実験を実施した．防食欠陥部からの塗膜のふくれを劣化指標として経時的な防食塗装劣化の評価を行った．また，防食欠陥部付近の残存塗膜および腐食生成物を除去し，下地鋼材の腐食量の評価を行った．その結果，Sn添加鋼ではSM鋼と比較して防食欠陥部周辺の腐食量がA塗装系で約80%，C塗装系で約60%に抑制される効果が確認された．また，塗膜劣化および鋼の腐食劣化の抑制効果はA塗装系よりもC塗装系において大きいことを確認した．, Sn-bearing steel containing a small amount of tin (Sn) was newly developed by noting the effect of adding such kind of trace alloy element for improving the corrosion resistance of steel. In order to investigate the corrosion deterioration characteristics around paint-coat defect of the coated Sn-bearing steel, accelerated exposure test was performed. During the test, the appearance and surface shape of paint coated Sn-bearing steel were examined for evaluating the degree of deterioration. The corrosion deterioration was evaluated by focusing on the blister of paint coating around the initial defect scribed in X shape. After the test, the corroded volumes of specimens were examined. The blister areas from the cross scribe paint defect of the Sn-bearing steel was respectively 90% in A-type coating and 50% in C-type coating of those of the SM490 steel at 2400 cycles. The corroded volumes from the cross scribe paint defect of the Sn-bearing steel were respectively 80% in A-type coating and 60% in C-type coating of those of the SM490 steel after the test.},
 pages = {407--419},
 title = {塗装Sn添加鋼の防食劣化特性と鋼橋への適用に関する検討},
 volume = {72},
 year = {2016}
}