2024-03-29T00:44:54Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02001641
2022-10-31T00:52:46Z
1642837622505:1642837855274:1642837865010
1642838403551:1642838406845
さび面塗料の防錆効果に関する研究(第1報)大気暴露3カ月および6カ月の結果
Corrosion Resistance of Some Protective Paints Coated on Rusty Stcel(1 sf Report.) Results of three and six month exposure
糸村, 昌祐
石原, 金盛
押川, 渡
Itomura, Shosuke
Ishihara, Kinsei
Oshikawa, Wataru
Outdoor exposure test
Corrosion rate
Steel plate
On-rust paint
Cross cut test
Adhesion test
Impact test
Five corrosion protective painls, including three used as on-rust ones, were tested for their anticorrosive effects at the outdoor exposure test yard of University of the Ryukyus, beginning on September 1, 1988. First, clean JIS SS41 mild steel plates of 15 x 15 cm x 3.2 mm each were exposed outdoor for 3 months,then they were removed of the resulting rust by means of a wire brush to retain slight rust. These specimens together with new plate specimens which were cleaned by grit blasting to retain no rust, were coated with the same protective paints. In addition, three kinds of uncoated steel sheets (JIS SS41 mild steel, JIS SPCD cold rolled carbon steel and JIS SPA - H weathering steel), and two kinds of zinc coated steel plates (JIS SGCC hot dip zinc coated steel and zinc hot dip galvanized mild steel) were used as the specimens to obtain the atmospheric corrosion data. The results obtained by this outdoor exposure test are as follows.\n1) After 6 month exposure, the three kinds of uncoated steel sheets showed equal corrosion rates of about 10 mg/dm^2/day. Their corroded conditions were also equal to each other. The two kinds of zinc coated steel plates were increased in weight slightly due to oxidation of zinc.\n2) Both the specimens coated with protective paints on their surfaces with slight rust and with no rust, respectively, showed no fault and no difference in their appearance. All paints coated on the surfaces with no rust showed good adhesive strength, and onc on-rust paints showed poor adhesive strength.\n3) The results of cross cut test were nearly the same as those of pull off test, except when the overcoatability between the undercoat and the top coat was poor.\n4) The impact strength of the coated paints in the initial stage was poorer than that after exposure. The longer the exposure period, the more improved this strength.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学工学部
1990-03
VoR
http://hdl.handle.net/20.500.12000/1389
0389-102X
AN0025048X
琉球大学工学部紀要
39
54
39
jpn
open access