How to memorize the Galvanic Series Chart
Does someone have an easy way to memorize this chart? A song, rhyme or cheat sheet?
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So far for PDD I've created several mnemonics to aid in memorization. Here's one I use:
"Keep B.T.S. Cough (actually cough—you’ll remember) / Away from A.L.Z."
This helps me remember to keep Brass, Tin, StainlessStl, and Copper / Away from Aluminum, Lead, and Zinc. And if anything is galvanized, it's automatically falls under Zinc.
im taking PDD this Saturday wish me luck!
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Michael Z - Thank you for your help.
I have this super long list of cathodes and anodes... you noted the main ones though:
I scheduled my PDD retake for mid-March.
Good luck on Saturday!
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It's super helpful to begin with the pair of Copper / Aluminum (most likely to appear in questions, if you were to remember only one pair). Coming into contacts, Aluminum will be corroded / damaged.
If you have a bit more brainpower (which we all easily run out of), adding Stainless Steel to the Cathode side and Zinc (really unstable) to the Anode side.
I think it helps to think in terms of real life application & material properties - if gold and silver are durable enough to be made coins, they must be super stable.
And you might not need to remember much more beyond these ;D
(And Bronze and Brass are both similar alloys of different proportions, with Bronze being quite soft mostly for really high end furniture / jewely; Brass more durable for being architectural elements like a shelf / bar / toekick detail or stair handrail. This sits at the back of my head, not immediately relevant but might be helpful.)
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All,
Know that for the exams, you shouldn't need to know a really long galvanic series (the list of metals in order of their reactivity). This is for a couple of reasons - 1. it's the distant pairs that are most problematic. 2. the list changes slightly (individual metals adjacent in the sequence swap places) depending on the environment (the catalyst of the electrochemical reaction) the metals are in. Michael's list and Yulinpeng's details cover almost every situation you might run into on the exam.
They are missing one really critical one, though, that is a personal favorite of mine. Treated lumber, in particular modern ACQ and CA/MCA have extremely high copper content and basically count as copper on the galvanic series. That's right - ACQ and MCA treated lumbers should be thought of as copper when thinking about galvanic corrosion of fasteners in the same way galvanized steel should be thought of as zinc!
Best,
Ralph, the Amber Book Team
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