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10146 Evolving Standard Test Methods for Vapor Inhibiting Ability (VIA) for Corrosion Protection

Product Number: 51300-10146-SG
ISBN: 10146 2010 CP
Author: A. James Henderson and Efim Ya Lyublinski
Publication Date: 2010
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The paper provides technical and historical perspective considered in creating the recently published NACE standard test method TM0208-2008 for rapid qualitative evaluation to determine the presence of Vapor Inhibiting Ability (VIA) for corrosion protection of ferrous metal surfaces (VIA-F). The standard includes improvements in repeatability of outcomes and criteria for judging and reporting outcomes. An optional test method is included to judge possible confounding of the VIA effect with partial water absorption (desiccant) effects of some Volatile Corrosion Inhibitor (VCI) materials. The paper also provides considerations for creating one or more test methods to determine VIA with non-ferrous metals (VIA-NF), including consideration of “witness” metal specimens, atmospheric contaminants and appropriate rapid qualitative test methods for them.

Keywords: atmosphere, corrosion, inhibitor, volatile, vapor, test method, ferrous, non-ferrous, VCI, VPI, VPCI
The paper provides technical and historical perspective considered in creating the recently published NACE standard test method TM0208-2008 for rapid qualitative evaluation to determine the presence of Vapor Inhibiting Ability (VIA) for corrosion protection of ferrous metal surfaces (VIA-F). The standard includes improvements in repeatability of outcomes and criteria for judging and reporting outcomes. An optional test method is included to judge possible confounding of the VIA effect with partial water absorption (desiccant) effects of some Volatile Corrosion Inhibitor (VCI) materials. The paper also provides considerations for creating one or more test methods to determine VIA with non-ferrous metals (VIA-NF), including consideration of “witness” metal specimens, atmospheric contaminants and appropriate rapid qualitative test methods for them.

Keywords: atmosphere, corrosion, inhibitor, volatile, vapor, test method, ferrous, non-ferrous, VCI, VPI, VPCI
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