JP5743395B2 - 冷却水系の腐食防止構造および腐食防止方法 - Google Patents
冷却水系の腐食防止構造および腐食防止方法 Download PDFInfo
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Description
La(OH)3、La2(CO3)3、La(CH3COO)3、La2(C2O4)3、Y(OH)3、Y2(CO3)3、Y(CH3COO)3、Y2(C2O4)3から選択されるいずれか1種を含有する腐食防止剤を調製する工程と、
調製した腐食防止剤を上記構造材の冷却水と接触する側の表面に付着させ、La(OH)3、La2(CO3)3、La(CH3COO)3、La2(C2O4)3、Y(OH)3、Y2(CO3)3、Y(CH3COO)3、Y2(C2O4)3から選択されるいずれか1種の物質から成る腐食防止膜を形成する工程とを備え、
スプレー法、CVD法、溶射法を適用する際には、前記構造材を組み立てる前に前記腐食防止膜を形成し、腐食防止剤を含有する冷却水中への浸漬法を適用する際には、前記構造材を組み立てる前または前記構造材を組み立てた後に前記腐食防止膜を形成することを特徴とする。
まず、腐食防止剤としてのLa化合物を含有した腐食防止膜を形成した本発明の実施例について、添付した図1および図2を参照して説明する。
次に、腐食防止剤としてのY化合物を含有した腐食防止膜を形成した本発明の実施例について、添付図3を参照して説明する。
次に腐食防止構造が運転温度(冷却水温度)の高低によって受ける影響を下記実施例3および図4を参照して説明する。
次に、構造材表面に付着させる腐食防止剤の付着量の多少が及ぼす影響について、下記実施例4および図5を参照して説明する。
次に、構造材表面に腐食防止剤を付着させる方法の相違が及ぼす影響について、下記実施例5および図6を参照して説明する。
次に、構造材表面に他の腐食防止剤としてLa(OH)3またはY(CO3)3を付着させた場合の効果について、下記実施例6および図7を参照して説明する。
2 酸化皮膜(酸化物層)
3 腐食防止膜(La2O3膜、Y(OH)3膜,La(OH)3膜,Y(CO3)3膜)
Claims (4)
- 温度が20℃以上350℃以下である冷却水を通水する冷却水系を構成する炭素鋼、銅合金、Ni基合金のいずれかから成る構造材の、冷却水と接触する側の表面に、La(OH)3、La2(CO3)3、La(CH3COO)3、La2(C2O4)3、Y(OH)3、Y2(CO3)3、Y(CH3COO)3、Y2(C2O4)3から選択されるいずれか1種の物質から成る腐食防止膜を付着させたことを特徴とする冷却水系の腐食防止構造。
- 前記LaおよびYのいずれか1種を含有する物質の付着量が1μg/cm2以上200μg/cm2以下であることを特徴とする請求項1記載の冷却水系の腐食防止構造。
- 温度が20℃以上350℃以下である冷却水を通水する冷却水系を構成する炭素鋼、銅合金、Ni基合金のいずれかから成る構造材の腐食防止方法において、
La(OH)3、La2(CO3)3、La(CH3COO)3、La2(C2O4)3、Y(OH)3、Y2(CO3)3、Y(CH3COO)3、Y2(C2O4)3から選択されるいずれか1種を含有する腐食防止剤を調製する工程と、
調製した腐食防止剤を上記構造材の冷却水と接触する側の表面に付着させ、La(OH)3、La2(CO3)3、La(CH3COO)3、La2(C2O4)3、Y(OH)3、Y2(CO3)3、Y(CH3COO)3、Y2(C2O4)3から選択されるいずれか1種の物質から成る腐食防止膜を形成する工程とを備え、
スプレー法、CVD法、溶射法を適用する際には、前記構造材を組み立てる前に前記腐食防止膜を形成し、腐食防止剤を含有する冷却水中への浸漬法を適用する際には、前記構造材を組み立てる前または前記構造材を組み立てた後に前記腐食防止膜を形成することを特徴とする冷却水系の腐食防止方法。 - 前記腐食防止膜を付着させる前に、構造材の冷却水と接触する側の表面を、予め機械加工処理、冷却水中への浸漬処理および化学洗浄処理のいずれかの処理を実施することを特徴とする請求項3記載の冷却水系の腐食防止方法。
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
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JP2009260933A JP5743395B2 (ja) | 2009-11-16 | 2009-11-16 | 冷却水系の腐食防止構造および腐食防止方法 |
EP10830047.6A EP2503030B1 (en) | 2009-11-16 | 2010-11-16 | Corrosion resistant structure and corrosion protection method in high-temperature water system |
KR1020127012402A KR101410012B1 (ko) | 2009-11-16 | 2010-11-16 | 고온수계의 부식방지 구조 및 부식방지 방법 |
MX2012005648A MX340996B (es) | 2009-11-16 | 2010-11-16 | Estructura resistente a la corrosion para sistema de agua de alta temperatura y metodo de prevencion de corrosion del mismo. |
PCT/JP2010/070355 WO2011059091A1 (ja) | 2009-11-16 | 2010-11-16 | 高温水系の腐食防止構造および腐食防止方法 |
CN2010800517588A CN102612573A (zh) | 2009-11-16 | 2010-11-16 | 用于高温水体系的抗腐蚀结构以及其防腐方法 |
AU2010319028A AU2010319028B2 (en) | 2009-11-16 | 2010-11-16 | Corrosion resistant structure and corrosion protection method in high-temperature water system |
US13/510,008 US9062878B2 (en) | 2009-11-16 | 2010-11-16 | Corrosion-resistant structure for high-temperature water system and corrosion-preventing method thereof |
US14/692,339 US9969889B2 (en) | 2009-11-16 | 2015-04-21 | Corrosion-resistant structure for high-temperature water system and corrosion-preventing method thereof |
US14/692,256 US9771482B2 (en) | 2009-11-16 | 2015-04-21 | Corrosion-resistant structure for high-temperature water system and corrosion-preventing method thereof |
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JP2009260933A JP5743395B2 (ja) | 2009-11-16 | 2009-11-16 | 冷却水系の腐食防止構造および腐食防止方法 |
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JP5743395B2 true JP5743395B2 (ja) | 2015-07-01 |
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EP (1) | EP2503030B1 (ja) |
JP (1) | JP5743395B2 (ja) |
KR (1) | KR101410012B1 (ja) |
CN (1) | CN102612573A (ja) |
AU (1) | AU2010319028B2 (ja) |
MX (1) | MX340996B (ja) |
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US11352508B2 (en) * | 2018-01-19 | 2022-06-07 | Dynalene Inc. | Molten salt inhibitor and method for corrosion protection of a steel component |
KR102460522B1 (ko) * | 2020-08-20 | 2022-10-31 | 한국과학기술원 | 고체산화물 연료전지 Hot-BOP에 적용되는 복합 코팅층 |
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- 2010-11-16 CN CN2010800517588A patent/CN102612573A/zh active Pending
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US9062878B2 (en) | 2015-06-23 |
US20150299473A1 (en) | 2015-10-22 |
AU2010319028A1 (en) | 2012-05-31 |
KR20120082451A (ko) | 2012-07-23 |
US20150299474A1 (en) | 2015-10-22 |
KR101410012B1 (ko) | 2014-06-20 |
US9969889B2 (en) | 2018-05-15 |
EP2503030A4 (en) | 2015-05-20 |
MX2012005648A (es) | 2013-06-18 |
CN102612573A (zh) | 2012-07-25 |
US9771482B2 (en) | 2017-09-26 |
EP2503030B1 (en) | 2018-05-23 |
WO2011059091A1 (ja) | 2011-05-19 |
AU2010319028B2 (en) | 2014-01-23 |
EP2503030A1 (en) | 2012-09-26 |
JP2011106914A (ja) | 2011-06-02 |
US20120225289A1 (en) | 2012-09-06 |
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