WO2012088236A3 - Corrosion resistance evaluator - Google Patents

Corrosion resistance evaluator Download PDF

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Publication number
WO2012088236A3
WO2012088236A3 PCT/US2011/066419 US2011066419W WO2012088236A3 WO 2012088236 A3 WO2012088236 A3 WO 2012088236A3 US 2011066419 W US2011066419 W US 2011066419W WO 2012088236 A3 WO2012088236 A3 WO 2012088236A3
Authority
WO
WIPO (PCT)
Prior art keywords
corrosion
days
cathode
evaluator
coated
Prior art date
Application number
PCT/US2011/066419
Other languages
French (fr)
Other versions
WO2012088236A2 (en
Inventor
Shi Hua Zhang
Lorenzo Fred Pelosi
Robert C. Nahas
Original Assignee
E.I. Du Pont De Nemours And Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by E.I. Du Pont De Nemours And Company filed Critical E.I. Du Pont De Nemours And Company
Priority to EP11852196.2A priority Critical patent/EP2656047A4/en
Priority to JP2013546361A priority patent/JP2014500516A/en
Priority to MX2013007139A priority patent/MX2013007139A/en
Priority to CN201180068137.5A priority patent/CN103518128A/en
Priority to CA2822607A priority patent/CA2822607A1/en
Priority to BR112013015685A priority patent/BR112013015685A2/en
Publication of WO2012088236A2 publication Critical patent/WO2012088236A2/en
Publication of WO2012088236A3 publication Critical patent/WO2012088236A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Abstract

The present invention is directed to a corrosion resistance evaluator suitable for corrosion testing coated metals substrates, such as auto bodies at an accelerated rate. A corrosion resistance evaluator provided with a chamber containing electrolyte to which anode and cathode coated with protective coating being tested are exposed. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages modulated in a stepwise manner for preset durations that are interspaced with recovery periods. The impedance date collected is then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).
PCT/US2011/066419 2010-12-21 2011-12-21 Corrosion resistance evaluator WO2012088236A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP11852196.2A EP2656047A4 (en) 2010-12-21 2011-12-21 Corrosion resistance evaluator
JP2013546361A JP2014500516A (en) 2010-12-21 2011-12-21 Corrosion resistance evaluation device
MX2013007139A MX2013007139A (en) 2010-12-21 2011-12-21 Corrosion resistance evaluator.
CN201180068137.5A CN103518128A (en) 2010-12-21 2011-12-21 Corrosion resistance evaluator
CA2822607A CA2822607A1 (en) 2010-12-21 2011-12-21 Corrosion resistance evaluator
BR112013015685A BR112013015685A2 (en) 2010-12-21 2011-12-21 corrosion resistance tester

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201061425462P 2010-12-21 2010-12-21
US61/425,462 2010-12-21

Publications (2)

Publication Number Publication Date
WO2012088236A2 WO2012088236A2 (en) 2012-06-28
WO2012088236A3 true WO2012088236A3 (en) 2012-08-09

Family

ID=46314878

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/066419 WO2012088236A2 (en) 2010-12-21 2011-12-21 Corrosion resistance evaluator

Country Status (7)

Country Link
EP (1) EP2656047A4 (en)
JP (1) JP2014500516A (en)
CN (1) CN103518128A (en)
BR (1) BR112013015685A2 (en)
CA (1) CA2822607A1 (en)
MX (1) MX2013007139A (en)
WO (1) WO2012088236A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107852151B (en) 2015-07-29 2023-07-28 胜艺科研发私人有限公司 Method and system for applying superimposed time-varying frequency electromagnetic waves to a target object or target area
CN105203604B (en) * 2015-10-15 2018-10-02 苏州铂瑞电极工业有限公司 A kind of analysis chlorine Ni―Ti anode simulating test device
JP2020118468A (en) * 2019-01-18 2020-08-06 マツダ株式会社 Corrosion resistance test device of coated metal material
CN112763406A (en) * 2020-12-16 2021-05-07 广州汽车集团股份有限公司 Corrosion data analysis method, medium, evaluation method and automobile
CN113218855B (en) * 2021-03-24 2022-05-17 厦门大学 Method for accelerating failure and corrosion of organic coating/metal system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6383451B1 (en) * 1999-09-09 2002-05-07 Korea Gas Corporation Electric resistance sensor for measuring corrosion rate
US20040061510A1 (en) * 2000-11-09 2004-04-01 Brian Hands Monitoring of corrosion induced loss of material by means of a plurality of electrical resistance measurements (field signature method, electrical resistance tomography)
US20060002815A1 (en) * 2002-10-01 2006-01-05 Harris Steven J Corrosion sensing microsensors

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1570591A (en) * 2004-05-09 2005-01-26 湖南大学 Acceleration method for barrel properties test of organic coating
US20100155262A1 (en) * 2008-12-18 2010-06-24 Yepez Omar J Apparatus and method to measure electrochemical impedance
US8888976B2 (en) * 2009-01-02 2014-11-18 Axalta Coating Systems Ip Co., Llc Corrosion resistance evaluator
WO2010078547A1 (en) * 2009-01-02 2010-07-08 E. I. Du Pont De Nemours And Company Process for evaluating corrosion resistance of coating
CN101634623B (en) * 2009-07-29 2012-04-18 北京化工大学 Method and system for rapidly evaluating corrosion resistance of in-service coating
CN101792922B (en) * 2010-04-12 2011-12-21 北京航空航天大学 Anticorrosive sealing liquid and method for sealing anodic oxide film containing copper-aluminium alloy by utilizing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6383451B1 (en) * 1999-09-09 2002-05-07 Korea Gas Corporation Electric resistance sensor for measuring corrosion rate
US20040061510A1 (en) * 2000-11-09 2004-04-01 Brian Hands Monitoring of corrosion induced loss of material by means of a plurality of electrical resistance measurements (field signature method, electrical resistance tomography)
US20060002815A1 (en) * 2002-10-01 2006-01-05 Harris Steven J Corrosion sensing microsensors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2656047A4 *

Also Published As

Publication number Publication date
JP2014500516A (en) 2014-01-09
EP2656047A4 (en) 2015-07-01
WO2012088236A2 (en) 2012-06-28
MX2013007139A (en) 2013-08-01
CA2822607A1 (en) 2012-06-28
EP2656047A2 (en) 2013-10-30
CN103518128A (en) 2014-01-15
BR112013015685A2 (en) 2016-09-20

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