MX2013007138A - Proceso para evaluar la resistencia a la corrosion de un revestimiento. - Google Patents

Proceso para evaluar la resistencia a la corrosion de un revestimiento.

Info

Publication number
MX2013007138A
MX2013007138A MX2013007138A MX2013007138A MX2013007138A MX 2013007138 A MX2013007138 A MX 2013007138A MX 2013007138 A MX2013007138 A MX 2013007138A MX 2013007138 A MX2013007138 A MX 2013007138A MX 2013007138 A MX2013007138 A MX 2013007138A
Authority
MX
Mexico
Prior art keywords
corrosion
days
cathode
coated
corrosion resistance
Prior art date
Application number
MX2013007138A
Other languages
English (en)
Inventor
Lorenzo Fred Pelosi
Shi Hua Zhang
Robert C Nahas
Original Assignee
Coatings Foreign Ip Co Llc
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 Coatings Foreign Ip Co Llc filed Critical Coatings Foreign Ip Co Llc
Publication of MX2013007138A publication Critical patent/MX2013007138A/es

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance

Abstract

La presente invención está dirigida a un proceso para evaluar la resistencia a la corrosión de sustratos metálicos revestidos, tales como carrocerías de automóviles, a una velocidad acelerada. Un ánodo y un cátodo revestidos con un revestimiento protector que se someten a prueba se exponen a un electrolito en una cámara de un aparato analizador de resistencia a la corrosión. Estos revestimientos están provistos de defectos predeterminados y estandarizados, tales como microorificios, para acelerar la corrosión del sustrato metálico subyacente de una manera predecible y repetible. El par cátodo/ánodo revestido se somete a un período de inicio seguido de una serie de voltajes de DC predeterminados modulados de manera triangular, triangular truncada o trapezoidal por tiempos de duración predeterminados intercalados con períodos de recuperación. Después, los datos de impedancia recolectados se usan para llegar a la resistencia de rendimiento de corrosión del revestimiento aplicado sobre el par cátodo/ánodo. El aparato analizador descrito anteriormente reduce sustancialmente el tiempo requerido para pruebas de corrosión desde varios días (40 días o más) a pocos días (aproximadamente, dos días).
MX2013007138A 2010-12-21 2011-12-21 Proceso para evaluar la resistencia a la corrosion de un revestimiento. MX2013007138A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201061425456P 2010-12-21 2010-12-21
PCT/US2011/066608 WO2012088324A2 (en) 2010-12-21 2011-12-21 Process of evaluating corrosion resistance

Publications (1)

Publication Number Publication Date
MX2013007138A true MX2013007138A (es) 2013-08-01

Family

ID=46314902

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2013007138A MX2013007138A (es) 2010-12-21 2011-12-21 Proceso para evaluar la resistencia a la corrosion de un revestimiento.

Country Status (6)

Country Link
US (2) US9212986B2 (es)
EP (1) EP2656044A4 (es)
CN (1) CN103534573A (es)
BR (1) BR112013015700A2 (es)
MX (1) MX2013007138A (es)
WO (1) WO2012088324A2 (es)

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Also Published As

Publication number Publication date
WO2012088324A3 (en) 2012-08-16
US20150060273A1 (en) 2015-03-05
EP2656044A4 (en) 2015-07-01
WO2012088324A2 (en) 2012-06-28
US9212986B2 (en) 2015-12-15
US20140097096A1 (en) 2014-04-10
CN103534573A (zh) 2014-01-22
EP2656044A2 (en) 2013-10-30
BR112013015700A2 (pt) 2016-10-11
US9476820B2 (en) 2016-10-25

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