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Quantitative Test Method For Vapor Inhibiting Ability Of Volatile Corrosion Inhibitors

Metallic corrosion is a natural inevitable phenomenon defined commonly as the deterioration of metals due to reactions with their environments. The global cost of corrosion estimated by NACE in 2013 was found to be $2.5 trillion (USD), which is approximately 3.4% of the global gross domestic product (GDP). The two-year global study released at the CORROSION 2016 conference in Vancouver, B.C., Canada, assessed the economics of corrosion and the role of corrosion management in establishing best practices for the different industrial sectors. It found that implementing corrosion prevention best practices could result in global annual savings of 15-35 % of the cost of damage, which is equivalent to $375-875 billion (USD). These estimations excluded the cost of individual safety and environmental consequences from corrosion. Corrosion mitigation has been extensively researched. The methods of corrosion prevention include, but are not limited to, selection of the right material of construction, coatings, corrosion inhibitors, and cathodic protection.1,2 

Product Number: 51322-17860-SG
Author: Khalil Abed, Mihad Ibrahim, Leitai Yang
Publication Date: 2022
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Current standard test methodologies used in determining the presence of vapor inhibition ability of the different volatile corrosion inhibitors are qualitative and limited in their ability to differentiate between the anticorrosive effect of inhibitor in liquid and powder. They also have intrinsic limitation in their applicability to determine the ability of the different volatile corrosion inhibitors in reducing active corrosion rate providing protection to pre-corroded ferrous metals. The aforementioned limitations raise the need to look for other methods for rapid and quantitative evaluation for this class of corrosion inhibitors. In this study, coupled multi array sensor technology was evaluated for its ability to overcome these limitations.  The results obtained showed the ability of this technology to provide consistent and repeatable results, differentiate quantitatively between the anti-corrosive effects of the different VCI materials Indicate performance differences between VCI in powder versus liquid forms in VIA testing environment, and determine VCI materials that can reduce active corrosion rate and provide protection to pre-corroded surfaces 

Current standard test methodologies used in determining the presence of vapor inhibition ability of the different volatile corrosion inhibitors are qualitative and limited in their ability to differentiate between the anticorrosive effect of inhibitor in liquid and powder. They also have intrinsic limitation in their applicability to determine the ability of the different volatile corrosion inhibitors in reducing active corrosion rate providing protection to pre-corroded ferrous metals. The aforementioned limitations raise the need to look for other methods for rapid and quantitative evaluation for this class of corrosion inhibitors. In this study, coupled multi array sensor technology was evaluated for its ability to overcome these limitations.  The results obtained showed the ability of this technology to provide consistent and repeatable results, differentiate quantitatively between the anti-corrosive effects of the different VCI materials Indicate performance differences between VCI in powder versus liquid forms in VIA testing environment, and determine VCI materials that can reduce active corrosion rate and provide protection to pre-corroded surfaces 

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