The statue of liberty retrofit predominately installed asbestos spacers, creating an electrical break that precludes the circuit that is required for galvanic corrosion, no current flow, no corrosion by galvanism.
The best thing about it is that it's less dense than aluminum. With a similar strength to weight. So when you're mostly sized by minimum wall thickness, you can get a lot lighter. You lose some of that savings with corrosion protection, but still very useful.
On B-737-200's the upper and lower gates on the cabin doors were cast magnisium. That is the part of the door that hinges out of the way so the main section of door fits in the opening. It is a plug type door. Massive corrosion problems. The Airline I worked for had a very labour intensive way of stripping them and reprotecting them to salvage them. They were exrtremy expensive. From memory Boeing changed to aluminum, which is what we would order when buying a new one. Lower weight of the magnisium was not worth the cost of constant replacement/repair. The scrap magnisium gates got thrown on the fire at the Structures Engineers fishing/drinking Derby. Turned the night to day, too bright to even look at.
This is the first time some instructor says to me "like really high-tech baking", this has instantly changed my view, and understanding of, casting and alloys.
There were two of those incendiary bombs in the house where I was born in Liverpool. One each side of the fireplace. They were two of a number that fell in our's and our neighbours gardens a few years earlier. They had been deactivated by the army and left as souvenirs for anyone who wanted them.
My dad still tells the story about a time a train carrying magnesium derailed near where he grew up in the Columbia River Gorge. Nothing would put out the fire (except time) and at night it lit up a huge area brighter than daylight.
The Statue of Liberty example is underrated as a teaching tool. The iron-to-copper surface area ratio basically guaranteed accelerated corrosion — the smaller the anode relative to the cathode, the faster it gets eaten. Eiffel knew structures, but whoever paired those two metals didn't run the galvanic numbers.
Kudos for putting the sponsor after the end. I ALWAYS skip them but i watched yours for the courtesy you show. You're a beacon of light on this dark monetized platform of greed. Recommending this channel to everyone i know. Great video!
It's kinda ironic about the thermite igniting the magnesium casing, when one of the most common ways to get thermite started is by lighting a magnesium ribbon.
I live in a little town in Germany called Dohna. Next to it we had for over 20 years one of the most biggest magnesium parts producing companies in whole Germany. They had sandbeds all over their machines which would melt in case if a fire and the sand would fall on the burning material and turned into glass to choke the fire.
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You may wanna check your reaearch bro.
That said, F18s use magnesium wheels for exactly the reason you mentioned.
For example, the earlier MS Surface tablets used magnesium alloys.