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Corrosion&Coating

24 2021.12
Corrosion inhibitor assessment For corrosion inhibitor assessment, usually people don’t calculate the corrosion rate, or MPY. Usually we get the inhibiting efficiency, that is a percentage. For example, with blank solution without adding inhibitor, we get a i0. If inhibitor 1 is added, we get i1. If inhibitor #2 is added we get i2. We calculate the percentage: (i0-i1) / i0 x100% Similarly for inhibitor #2 (i0-i2) /......
22 2021.12
Metal Corrosion Metal Corrosion When the metal material is in contact with the surrounding medium, the material is destroyed due to chemical or electrochemical action. Metal corrosion is a thermodynamic spontaneous process, converting a metal of high-energy state into a metal compound of a low-energy state. Among them, the corrosion phenomenon in the petroleum and petrochemical industry is more complicated, inc......
22 2021.12
EIS measurements of 4 coating samples  EIS measurements of 4 coating samples Aim: to evaluate the protection of coating(through different treatments) on the low carbon steel based on EIS measurements Four types of samples: #1: coating sample through oiling plate vitrification  #2: coating sample through oiling plate phosphating #3: coating sample through Chromium-free passivation plate vi......

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