Articles by W. Stephen Tait
Hello everyone. There are several types of metals used to fabricate spray package components. There’s also a common corrosion myth that aluminum is more corrosion resistant than steel. Let’s briefly review the types of…
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Hello everyone. I’m often asked how corrosion starts in spray packaging. The corrosion of spray packages begins in so many different ways that a comprehensive discussion is beyond the scope of Corrosion Corner. However,…
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Hello everyone. One of the most difficult questions to answer about corrosion is why it’s so random. For example, you have a static storage test on a new formula or line extension, and you open…
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Hello everyone. There are many ways that a spray package could fail (e.g., malodorous product, leaking or no longer sprays). However, the most likely mode of spray package failure is from localized corrosion. Localized corrosion…
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Happy New Year everyone. Testing spray packages at several different storage temperatures is a common practice. The typical objectives for using different temperatures are to determine product stability and product-package compatibility for the range of…
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Hello everyone. A lot of people find corrosion very exciting. For example, your marketing manager probably gets very excited about corrosion if it jeopardizes the timetable for a new product. In contrast, corrosion is exciting to engineers and scientists…
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Hello everyone. Water is often referred to as being the closest thing to a universal solvent. It dissolves a wide range of formula ingredients and dissolves into a wide range of formula chemicals. For example, inorganic salts and…
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Hello everyone. Free liquid water is needed for metal corrosion and polymer corrosion to occur. Anhydrous spray formulas (or solvent formulas) are typically regarded as being corrosion-proof because they are essentially water-free. However, there are instances when a non-corrosive…
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Hello everyone. One of the most persistent myths in corrosion is that chloride ions cause pitting corrosion for all metals and coated metals. The myth about chloride ions and corrosion most likely originated with the pitting corrosion behavior of some stainless steel alloys in…
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Hello everyone. Spray package metals, polymer laminate films and internal polymer coatings are all susceptible to corrosion. In this month’s Corrosion Corner, I’ll review several of the general attributes of spray package corrosion and the adverse effects corrosion has on both product efficacy and spray package…
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