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A galvanic anode, or sacrificial anode, is the main component of a galvanic cathodic protection system used to protect buried or submerged metal structures from corrosion. They are made from a metal alloy with a more "active" voltage (more negative reduction potential / more positive oxidation potential ) than the metal of the structure.
Aluminum sacrificial anodes (light colored rectangular bars) mounted on a steel jacket structure. Zinc sacrificial anode (rounded object) screwed to the underside of the hull of a small boat. Cathodic protection (CP; / k æ ˈ θ ɒ d ɪ k / ⓘ) is a technique used to control the corrosion of a metal surface by making it the cathode of an ...
Zinc acts as a sacrificial anode for protecting the iron (steel). While steel is close to E SCE = -400 mV (the potential refers to the standard Saturated calomel electrode (SCE), depending on the alloy composition, electroplated zinc is much more anodic with E SCE = -980 mV.
The most common sacrificial anode materials are aluminum, zinc, magnesium and related alloys. Aluminum has the highest capacity, and magnesium has the highest driving voltage and is thus used where resistance is higher. Zinc is general purpose and the basis for galvanizing. A number of problems are associated with sacrificial anodes.
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The CARS Program was implemented by the Department of Trade and Industry in order to attract and encourage new car companies to produce vehicles in the Philippines [15] and stimulate demand and impose industry regulations that will restore the country's automotive industry, and make the country a regional automotive manufacturing hub, [16] and ...
Sold for: $2.2 million. Worn by Jordan during Game 2 of the 1998 NBA Finals, these shoes witnessed the shooting guard score a whopping 37 points to lead the Bulls to victory on their path to a ...
Forget salty, sweet, and umami—2025 is the year of sour. More specifically, sour cherries are about to have a moment, according to market research firm Mintel's 2025 Global Food and Drinks ...