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The 8 Most Common Forms of Metal Corrosion

Corrosion impacts our society on a daily basis. Automobiles, buildings, infrastructure, appliances and energy distribution systems are examples of some of the components negatively affected by this phenomena. Corrosion is defined as the deterioration of a material as a result of chemical reactions between it and the surrounding environment. Although corrosion affects a variety of materials including polymers and ceramics, the term is most often associated with the degradation of metals. In a 2016 study conducted by the NACE (formerly known as the National Association of Corrosion Engineers) and outlined in their publication “The International Measures of Prevention, Application and Economics of Corrosion Technology (IMPACT),”…


New Model Accurately Predicts the Effects of Mechanical Stress on Corrosion

Annually, the impacts of corroding materials cost the global economy over $1 trillion. Some alloys are exposed to extreme temperatures and stress, causing the formation of an oxide film, which in turn accelerates the breakdown of the alloys. The exact reasons that make these high-stress and high-temperature conditions so favorable for corrosion are unclear, particularly in microelectromechanical devices. Chinese researchers have begun to work toward understanding the causes for corrosion of materials under mechanical stress. They have reported their study in the Journal of Applied Physics, from AIP Publishing. Click here to read more about this ground-breaking new model. https://news.jm.com/blog/corrosion-under-insulation/new-model-accurately-predicts-effects-mechanical-stress-corrosion


Minimize Corrosion Reduction in Power Distribution

We have all experienced corrosion in the form of rusting bridges, road salt corroding aluminum wheels and rusting our vehicles. These same corrosion processes occur in power distribution equipment, especially in offshore or near-shore locations, with the potential for causing catastrophic failures. Corrosion is a naturally occurring process that affects virtually all metals, though at different rates. Corrosion can be a cosmetic issue, but most likely will always affect the function of a device/part/component in a negative way. Power distribution systems not functioning as designed may result in significant safety or performance concerns. Corrosion can never be stopped, but the…


Interview with Stevie Jones: Understanding NAIMA’s Duct Instruct Program

As the insulation industry strives to help equip new talent with the skills and tools necessary to fabricate and install well-detailed, effective insulation systems, many programs are being developed by major players in the insulation industry to meet the growing need for education. For example, NAIMA (the North American Insulation Manufacturers Association) developed the Duct Instruct Program – a train-the-trainer program designed to help ensure that vocational schools are equipped to properly train their students on duct board fabrication. We recently met with Stevie Jones, the manager of the NAIMA Duct Instruct Program, to learn more about the program and…


The NEWS’ Trainer Panel Examines Ductwork Insulation

“Forward-thinking contractors keep duct insulation in the forefront as they understand the impact it has on temperature loss through the duct system,” said David Richardson, curriculum developer and trainer, National Comfort Institute (NCI). “It’s almost always a focal point of any duct renovation or upgrade they perform.” Richardson, along with a few other members of The NEWS’ Trainer Panel, recently discussed the benefits and drawbacks of insulating ductwork. They explored what applications are best suited to it, common mistakes that can be avoided, and where they are seeing ductwork insulation being used most often. Click here to read their full…


HVAC Duct Insulation—Making Sound Choices

Generally, when the words duct insulation and acoustics appear in the same sentence, I usually think duct liner and sound absorption. If I am having a more cerebral moment, I may think insertion loss or friction loss. But that is not all there is to HVAC duct insulation. While duct liners certainly play an important role in providing thermal and acoustical insulation for HVAC systems, duct coverings or duct wraps also provide important alternatives. In its simplest form, duct lining (traditionally fiber glass), would be installed in rectangular ducts as part of an automated process while the duct is being…

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