Susan A. Drozdz

Development of a Predictive Corrosion Model Using Locality-Specific Corrosion Indices

Abstract : This Office of the Secretary of Defense Corrosion Prevention and Control Program project developed a statistical model of atmospheric corrosion of selected metals. This model relates measured corrosion rates at test sites (mainly military bases) worldwide to critical environmental variables. These variables are (1) a measure of atmospheric chlorides, (2) rainfall, and (3) relative humidity values at several levels. The measured corrosion rates obtained at test sites over the period of CY05 - CY07. Additionally this database includes much more data obtained from similar DoD monitoring activities over nearly the last decade. This serves to enhance the statistical relevance of the developed model. The model includes algorithms for several metals that have been routinely used in the monitoring work. These include copper, 6061 T6 aluminum, 7075 T6 aluminum, and a low carbon (1010) steel.

Green Chemical Treatments for Heating and Cooling Systems

Scale, corrosion and the and biological growth in industrial water handling processes result in reduced water flow though pipes, reduced heat transfer, and pump failures. Preventative treatments for these problems are based upon chemical compounds that are most often toxic and environmentally persistent. Manufacturers continue to introduce new chemicals and treatment programs onto the market, and old products have been discontinued. Many manufacturers claim that the new chemical and treatments are more environmentally friendly and safer for the plant workers and the users. The U.S. Army Engineer Research and Development Center Construction Engineering Research Laboratory has undertaken a research effort to look at these new chemical treatments. The objective of this work was to develop “green” water treatment chemicals that control biological growth, corrosion and scale while reducing or eliminating the generation of toxic substances during the manufacture, use, and disposal processes.

Demonstration and validation of portable electrochemical impedance spectroscopy technology : final report on Project F11-AR08

The Department of Defense maintains many steel structures that are subject to corrosion. Coatings are a traditional first line of defense against corrosion, but a completely accurate assessment of coating condition cannot always be made by using only conventional visual inspection techniques because not all defects are visible. Alternatively, performing laboratory inspections can be difficult, time-consuming, costly, and may require testing specimens separately from the actual coated structure. This Office of the Secretary of Defense Corrosion Prevention and Control Program project sought to improve accuracy and lower costs (early detection of problems reduce future maintenance) by demonstrating and validating the capabilities of a portable electrochemical impedance spectroscopy (EIS) technology for evaluating coating health. A portable EIS system was demonstrated in a laboratory setting and at field locations on Fort Bragg, NC, and Fort Lewis, WA. The results showed the tested version of the portable EIS system has limited capabilities in comparison to traditional laboratory methods. Based on the results of the technology demonstration, the system needs further development before the anticipated benefits might be realized. Therefore, widespread implementation of the demonstrated system is not recommended at the current state, and the project’s return on investment is considered to be zero. DISCLAIMER: The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. All product names and trademarks cited are the property of their respective owners. The findings of this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents. DESTROY THIS REPORT WHEN NO LONGER NEEDED. DO NOT RETURN IT TO THE ORIGINATOR. ERDC/CERL TR-18-8 iii

Corrosion Control Cost Reduction through Improved QA Information Management - An OSD Funded Joint Navy Army Initiative

When the coating application does not meet the required standards, the lifetime of the coating can be substantially reduced. In the worst case, the coating may catastrophically fail immediately after being placed into service. This ongoing joint project conducted by the U.S. Navy and the U.S. Army is intended to demonstrate and provide for the automation of data collection for painting projects on critical structures and the make this data a more effective resource for making effective management decisions for the protection of DoD assets.