JP2023504062A - 腐食を検出する方法および装置 - Google Patents
腐食を検出する方法および装置 Download PDFInfo
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 21
- 238000005259 measurement Methods 0.000 description 16
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
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- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
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Abstract
Description
本発明の目的は、複雑な形状を有する機器の腐食を検出することに関する上記の課題を克服するための方法およびその方法を実施するための装置を提供することである。本発明の目的は、独立請求項に記載された内容によって特徴付けられる方法および装置によって達成される。本発明の好ましい実施形態は、従属請求項に開示する。
医療器具の表面上の酸化鉄の小さな斑点は、電気化学的手法、例えばリニアスイープボルタンメトリー(LSV)やサイクリックボルタンメトリー(CV)によって、例えばAg/AgCl参照に対して-0.35V~0.35Vのような適切な電位窓で検出できることが判明している。リニアスイープボルタンメトリー(LSV)およびサイクリックボルタンメトリー(CV)は、そのような手順として知られており、電気分解プロセスの特性を調べるために一般的に使用されている。
Claims (15)
- 対象物の表面の腐食を検出する方法であって、
対象物を電解液に浸すこと、
鉄の酸化還元反応に由来する電流に基づいて、対象物の表面の腐食の存在を電気化学的手法により検出すること
を含む方法。 - 検出するステップが、リニアスイープボルタンメトリー(LSV)またはサイクリックボルタンメトリー(CV)スキャンを使用することを含むことを特徴とする、請求項1に記載の方法。
- LSVまたはCVスキャンを使用して、鉄(酸化物)の存在を検出することを特徴とする、請求項2に記載の方法。
- 対象物がステンレス鋼合金製であり、作用電極として機能することを特徴とする、請求項2または3に記載の方法。
- 第3の電極として、LSVまたはCVスキャンにおいてAgまたはAgCl参照電極を使用することを含むことを特徴とする、請求項2、3または4のいずれか1項に記載の方法。
- LSVまたはCVスキャンの掃引速度が5mV/s~100mV/sの範囲であることを特徴とする、請求項2~5のいずれか1項に記載の方法。
- LCVまたはCVスキャンの電位窓がAg/AgCl参照に対して-0.35V~0.35V、好ましくは電位窓がAg/AgCl参照に対して0V~0.35VまたはAg/AgCl参照に対して-0.25V~0.1Vであることを特徴とする、請求項2~6のいずれか1項に記載の方法。
- 腐食の存在を検出することが、LSVまたはCVスキャンで得られた電流応答中のパターンを検出することを含むことを特徴とする、請求項2~7のいずれか1項に記載の方法。
- 腐食の存在を検出することが、電流変化の割合または電流変化の割合の変化を検出することを含み、電流がLSVまたはCVスキャンで得られた電流応答であることを特徴とする、請求項2~8のいずれか1項に記載の方法。
- 電流変化の割合が、時間に関するまたは電位に関する電流の導関数(derivative)であり、電流がLSVまたはCVスキャンに対する電流応答であることを特徴とする、請求項9に記載の方法。
- 電流変化の割合の変化が、時間に関してまたは電位に関して電流の二次導関数(second derivative)であり、電流がLSVまたはCVスキャンに対する電流応答である、請求項9に記載の方法。
- 電解質が合成生理液であることを特徴とする、請求項1~11のいずれか1項に記載の方法。
- 対象物が、医療器具、臨床器具または臨床研究器具のような医療対象物であることを特徴とする、前記請求項1~12のいずれか1項に記載の方法。
- 腐食の存在を検出することが、
選択した電位範囲における電流応答を決定すること、
機械学習手順で使用した電流応答データから決定すること、ここに機械学習手順は、以前に収集されたデータを含み、
決定されたデータに基づいて、および機械学習を使用して以前に収集されたデータから、腐食したサンプルまたは清浄なサンプルに対象物を分類すること
を含むことを特徴とする、請求項1~8のいずれか1項に記載の方法。 - 対象物の表面の腐食を検出するための装置であって、
対象物を電解液に浸す手段、
鉄の酸化還元反応に起因する電流に基づいて、対象物の表面の腐食の存在を電気化学的手法で検出する手段
を含む装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FI20196024 | 2019-11-27 | ||
FI20196024A FI20196024A1 (en) | 2019-11-27 | 2019-11-27 | Method and device for detecting corrosion |
PCT/FI2020/050796 WO2021105563A1 (en) | 2019-11-27 | 2020-11-25 | Method and apparatus for detecting corrosion |
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JP2023504062A true JP2023504062A (ja) | 2023-02-01 |
JP7469827B2 JP7469827B2 (ja) | 2024-04-17 |
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US (1) | US11953422B2 (ja) |
EP (1) | EP4065953A1 (ja) |
JP (1) | JP7469827B2 (ja) |
KR (1) | KR20220147574A (ja) |
FI (1) | FI20196024A1 (ja) |
WO (1) | WO2021105563A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6343704B2 (ja) * | 1979-05-10 | 1988-09-01 | Nippon Paint Co Ltd | |
JP2001033389A (ja) * | 1999-07-26 | 2001-02-09 | Sumitomo Metal Ind Ltd | 鋼材の耐食性評価方法およびその装置 |
JP2003149198A (ja) * | 2001-11-13 | 2003-05-21 | Japan Science & Technology Corp | 金属材料の表面保護皮膜の安定度評価方法 |
US20080179198A1 (en) * | 2007-01-29 | 2008-07-31 | Burgess Michelle S | System and method of use for electrochemical measurement of corrosion |
JP2012233819A (ja) * | 2011-05-06 | 2012-11-29 | Yokogawa Electric Corp | 金属特性測定装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2048491B (en) | 1980-03-17 | 1983-08-03 | Nippon Paint Co Ltd | Method for evaluating corrosion of coated metallic material |
US5795461A (en) | 1996-03-26 | 1998-08-18 | Rising; Brandt A. | Electrode system for monitoring corrosion |
US6264824B1 (en) | 1998-02-20 | 2001-07-24 | Integriti Investments Ltd. | Assessment of corrosion |
CN1916617B (zh) * | 2005-08-19 | 2011-11-16 | 深圳富泰宏精密工业有限公司 | 缓蚀剂浓度的测定方法 |
US20070163892A1 (en) * | 2006-01-17 | 2007-07-19 | Honeywell International, Inc. | Corrosion sensor |
US7719292B2 (en) * | 2007-10-12 | 2010-05-18 | Honeywell International Inc. | Method and apparatus for electrochemical corrosion monitoring |
CN102132162A (zh) | 2008-07-02 | 2011-07-20 | 倍加福公司 | 作为局部腐蚀指示器的电化学噪声 |
US8926823B2 (en) * | 2010-11-30 | 2015-01-06 | Georges J. Kipouros | Sub-coating coated metal corrosion measurement |
US9354157B2 (en) | 2013-12-30 | 2016-05-31 | Electric Power Research Institute, Inc. | Apparatus and method for assessing subgrade corrosion |
US10001436B2 (en) * | 2014-01-22 | 2018-06-19 | Southwest Research Institute | In-situ measurement of corrosion in buried pipelines using vertically measured pipe-to-soil potential |
CN106442682B (zh) | 2016-08-31 | 2019-06-14 | 浙江大学 | 一种钢筋混凝土结构中钢筋析氢临界电流密度的测定方法 |
WO2018048461A1 (en) | 2016-09-06 | 2018-03-15 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Electrochemical detection of corrosion and corrosion rates of metal in molten salts at high temperatures |
-
2019
- 2019-11-27 FI FI20196024A patent/FI20196024A1/en unknown
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2020
- 2020-11-25 JP JP2022531004A patent/JP7469827B2/ja active Active
- 2020-11-25 US US17/779,822 patent/US11953422B2/en active Active
- 2020-11-25 WO PCT/FI2020/050796 patent/WO2021105563A1/en active Search and Examination
- 2020-11-25 KR KR1020227021839A patent/KR20220147574A/ko unknown
- 2020-11-25 EP EP20820472.7A patent/EP4065953A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6343704B2 (ja) * | 1979-05-10 | 1988-09-01 | Nippon Paint Co Ltd | |
JP2001033389A (ja) * | 1999-07-26 | 2001-02-09 | Sumitomo Metal Ind Ltd | 鋼材の耐食性評価方法およびその装置 |
JP2003149198A (ja) * | 2001-11-13 | 2003-05-21 | Japan Science & Technology Corp | 金属材料の表面保護皮膜の安定度評価方法 |
US20080179198A1 (en) * | 2007-01-29 | 2008-07-31 | Burgess Michelle S | System and method of use for electrochemical measurement of corrosion |
JP2012233819A (ja) * | 2011-05-06 | 2012-11-29 | Yokogawa Electric Corp | 金属特性測定装置 |
Non-Patent Citations (1)
Title |
---|
正村 克身: "参照電極", 防食技術, vol. 35, no. 7, JPN6023031340, 1986, pages 422 - 423, ISSN: 0005120133 * |
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EP4065953A1 (en) | 2022-10-05 |
JP7469827B2 (ja) | 2024-04-17 |
KR20220147574A (ko) | 2022-11-03 |
US11953422B2 (en) | 2024-04-09 |
WO2021105563A1 (en) | 2021-06-03 |
FI20196024A1 (en) | 2021-05-28 |
US20230011245A1 (en) | 2023-01-12 |
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