JPWO2018181464A1 - 生物付着抑制方法及び生物付着抑制装置 - Google Patents
生物付着抑制方法及び生物付着抑制装置 Download PDFInfo
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- B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4602—Treatment of water, waste water, or sewage by electrochemical methods for prevention or elimination of deposits
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- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
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- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/12—Electrodes characterised by the material
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/24—Scaring or repelling devices, e.g. bird-scaring apparatus using electric or magnetic effects, e.g. electric shocks, magnetic fields or microwaves
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4612—Controlling or monitoring
- C02F2201/46125—Electrical variables
- C02F2201/46135—Voltage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/20—Prevention of biofouling
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2201/00—Type of materials to be protected by cathodic protection
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/10—Controlling or regulating parameters
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/31—Immersed structures, e.g. submarine structures
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Abstract
Description
静水環境下において、生物付着抑制のための電流密度の検討を行った。まず、試験条件について説明する。陰極となる供試体は、長さ150mm×幅70mm×厚み3.0mmの平板状(評価面積が140cm2)とした。供試体の材質は、アルミニウム青銅鋳物第3種(ALBC3)とした。陽極部材は、外径20mm×長さ150mmの丸棒とした。陽極部材の材質は、亜鉛とした。
流水環境下において、生物付着防止のための電流密度の検討を行った。まず、試験条件について説明する。流水環境下での試験条件は、上記の静水環境下での試験条件に対して、海流や潮流等の流水による影響を評価するために電解液中でエアレーションによる撹拌を行った点が相違しており(上記の静水環境下での試験では、電解液中でのエアレーションによる撹拌無し)、その他の条件については同じとした。エアレーション方法については、エアーポンプと、セラミックエアストーン(直径30mm×長さ50mm、重量50g)とを用いて電解液中に気泡を発生させて撹拌した。エアーポンプには、株式会社ニッソーのCHIKARA α 1500を使用した。気泡の直径は、1mmから10mm程度とした。
次に、実海域に供試体を浸漬させて生物付着性評価試験を行った。供試体は、長さ300mm×幅150mm×厚み3.0mmの平板状とした。供試体の材質は、アルミニウム青銅鋳物第3種(ALBC3)とした。陽極部材は、チタンーイリジウム系材料で形成した丸棒とした。通電面積は、0.089m2とした。
脱アルミニウム腐食の腐食性について評価した。まず、腐食性評価の試験条件について説明する。供試体は、長さ150mm×幅70mm×厚み3.0mmの平板状とした。供試体の材質は、アルミニウム青銅鋳物第3種(ALBC3)とした。陽極部材は、外径20mm×長さ150mmの丸棒とした。陽極部材の材質は、亜鉛とした。
水素による水素脆化の影響を評価した。供試体の形状は、引張試験片形状とした。供試体の材質は、アルミニウム青銅鋳物第3種(ALBC3)とした。陽極部材は、外径20mm×長さ150mmの丸棒とした。陽極部材の材質は、亜鉛とした。
Claims (14)
- 水中での生物の付着を抑制する生物付着抑制方法であって、
前記水中に浸漬され、銅合金で形成された生物付着抑制対象部材を陰極とし、前記生物付着抑制対象部材の対極を構成する陽極部材を前記水中に浸漬させて配置する準備工程と、
前記生物付着抑制対象部材と、前記陽極部材との間に、直流電流を通電する通電工程と、
を備える、生物付着抑制方法。 - 請求項1に記載の生物付着抑制方法であって、
前記通電工程は、前記生物付着抑制対象部材と、前記陽極部材との間に、水の電気分解開始時の電流密度以上で通電する、生物付着抑制方法。 - 請求項2に記載の生物付着抑制方法であって、
前記通電工程は、前記生物付着抑制対象部材と、前記陽極部材との間に、水の電気分解開始時の電流密度以上2.5A/m2以下で通電する、生物付着抑制方法。 - 請求項2に記載の生物付着抑制方法であって、
前記銅合金は、アルミニウムを含み、
前記通電工程は、前記生物付着抑制対象部材と、前記陽極部材との間に、水の電気分解開始時の電流密度以上20A/m2以下で通電する、生物付着抑制方法。 - 請求項2から4のいずれか1つに記載の生物付着抑制方法であって、
前記通電工程は、0.06A/m2以上の電流密度で通電する、生物付着抑制方法。 - 請求項2から4のいずれか1つに記載の生物付着抑制方法であって、
前記通電工程は、0.24A/m2以上の電流密度で通電する、生物付着抑制方法。 - 請求項1から6のいずれか1つに記載の生物付着抑制方法であって、
前記銅合金は、アルミニウム青銅である、生物付着抑制方法。 - 請求項1から7のいずれか1つに記載の生物付着抑制方法であって、
前記生物付着抑制対象部材は、船舶用プロペラである、生物付着抑制方法。 - 請求項8に記載の生物付着抑制方法であって、
前記準備工程は、更に、前記水中に参照電極を浸漬させて配置し、
前記通電工程は、前記参照電極に対する前記船舶用プロペラの電位を一定に保持して、前記船舶用プロペラと、前記陽極部材との間に、直流電流を通電する、生物付着抑制方法。 - 請求項8に記載の生物付着抑制方法であって、
前記準備工程は、更に、喫水線の位置を測定する水位センサを配置し、
前記通電工程は、前記水位センサで測定された喫水線の位置から喫水線以下の没水したプロペラ面積を求め、電流密度を一定とするために、前記没水したプロペラ面積に応じて、前記船舶用プロペラと、前記陽極部材との間に通電する直流電流の電流量を変化させる、生物付着抑制方法。 - 水中での生物の付着を抑制する生物付着抑制装置であって、
前記水中に浸漬され、陰極となる銅合金で形成された生物付着抑制対象部材の対極を構成する陽極部材と、
前記生物付着抑制対象部材と、前記陽極部材とに電気的接続される電源と、
前記電源を制御して、前記生物付着抑制対象部材と、前記陽極部材との間に、直流電流を通電する制御部と、
を備える、生物付着抑制装置。 - 請求項11に記載の生物付着抑制装置であって、
前記制御部は、前記電源を制御して、前記生物付着抑制対象部材と、前記陽極部材との間に、水の電気分解開始時の電流密度以上で通電する、生物付着抑制装置。 - 請求項11または12に記載の生物付着抑制装置であって、
前記生物付着抑制対象部材は、船舶用プロペラである、生物付着抑制装置。 - 請求項13に記載の生物付着抑制装置であって、
前記船舶用プロペラは、船体の船尾側に配置されており、
前記陽極部材は、前記船舶用プロペラの船幅方向から船尾方向にかけて、前記船舶用プロペラを囲むようにして設けられている、生物付着抑制装置。
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PCT/JP2018/012724 WO2018181464A1 (ja) | 2017-03-28 | 2018-03-28 | 生物付着抑制方法及び生物付着抑制装置 |
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EP (1) | EP3604111A4 (ja) |
JP (1) | JP6893238B2 (ja) |
KR (1) | KR102260292B1 (ja) |
CN (1) | CN110461705B (ja) |
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2018
- 2018-03-28 KR KR1020197030043A patent/KR102260292B1/ko active IP Right Grant
- 2018-03-28 WO PCT/JP2018/012724 patent/WO2018181464A1/ja unknown
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- 2018-03-28 JP JP2019509967A patent/JP6893238B2/ja active Active
- 2018-03-28 CN CN201880019212.0A patent/CN110461705B/zh active Active
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福島憲明,高遠典宏,福岡麻里,井合雄一,赤嶺健一: ""水門設備向け海生生物付着防止技術の開発"", IHI技報, vol. 第53巻,第3号, JPN6020033527, 1 September 2013 (2013-09-01), JP, pages 82 - 87, ISSN: 0004340920 * |
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CN110461705B (zh) | 2021-10-15 |
EP3604111A1 (en) | 2020-02-05 |
EP3604111A4 (en) | 2021-01-13 |
KR20190124790A (ko) | 2019-11-05 |
CN110461705A (zh) | 2019-11-15 |
SG11201908749XA (en) | 2019-10-30 |
JP6893238B2 (ja) | 2021-06-23 |
WO2018181464A1 (ja) | 2018-10-04 |
US20200017178A1 (en) | 2020-01-16 |
KR102260292B1 (ko) | 2021-06-03 |
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