書誌事項
- タイトル別名
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- Ion Selectivity and Mechanism of Stable Rust Formation of Phosphoric Acid-Iron Oxide-PVB Rust Stabilization Surface Treatment Film.
- リンサン サンカ テツ PVBケイサビ アンテイカ ショリ マク ノ イオン
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抄録
Despite thier thinness, films applied to weathering steel using a phosphoric acid-iron oxide-PVB rust stabilization surface treatment act to inhibit rust formation and to suppress“rust outflow”. The following conclusions were reached in a study of the reasons for the treatment's effectiveness.<br>(1) The treatment film exhibits cation selectivity in a NaCl solution and KCl solution and anion selectivity in a FeCl2 solution and FeCl3 solution. Accordingly, by acting to suppress the diffusion of Cl-, Fe2+ and Fe3+, the film inhibits corrosion of the iron matrix and the occurrence of“rust out-flow”.<br>(2) Examination of artificial rust (amorphous rust) revealed that a compound layer comprised of the treatment film and rust acts as a bipolar film with both cation selectivity and anion selectivity. The compound layer also suppresses the diffusion of Cl-, Fe2+ and Fe3+.<br>(3) Because the treatment film has a relatively high permeability for moisture and oxygen, PO43- and other phosphate ions easily flow out of the film during prolonged atmospheric exposure. It is thought that PO43-, in addition to imparting ion selectivity to the rust, contributes, together with the alloying elements, to rust stabilization in weathering steel.
収録刊行物
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- 表面技術
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表面技術 47 (4), 366-371, 1996
一般社団法人 表面技術協会
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詳細情報 詳細情報について
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- CRID
- 1390282679091864448
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- NII論文ID
- 10002256182
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- NII書誌ID
- AN1005202X
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- ISSN
- 18843409
- 09151869
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- NDL書誌ID
- 3947929
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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