Oh yes, definitely @db4690… I was thinking more inland in my example at that moment. The New Jersey Coast taught me a bit about rusting steel near the Ocean and Bay… it was frightful to be honest. Being completely and totally honest as I strive to be…despite it being embarrassing at times, I am going to ask what may seem a silly question. One that I have been pondering since I must have been about 9 or 10yrs old. Many decades…without looking it up.
Today I am going to look into it finally…once and for all. I’m actually excited about this, silly I know, but I’ve meant to look into this quite a number of times. but something would always come up and then I would forget about it again…rinse and repeat, many times over across a long span of time.
So in my current and very long lasting state of ignorance…I’m going to ask you intelligent people to help explain this phenomenon.
The elementary and quick 20 minute lesson in school about evaporation and condensation…clouds and fog, taught simply that the body of water evaporated and then turned into clouds or fog or rain and fell back to earth or onto earthly items, etc… OK, fine, no problem, no further info needed. Not until you dig a little deeper. It was only later that I learned that H2O is the only thing involved in the process…and it is a trusted water purification method producing pure water in the end, nothing else, no dissolved minerals are carried by the water during the process… Anything in the water gets left behind…like dissolved minerals…including salt. My childhood self used to conduct experiments to verify this by tasting it (yes I’m that guy). Dew drops, fog, mist, were indeed NOT salty at all, in any way. I have long suspected that the salt must be coming in contact and rusting steel and oxidizing aluminum by some other mechanism.
My silly, childhood turned adult, question of…Without being dipped into the ocean…or driven through salt water, why do things rust so aggressively, at the coastlines?
My current answer or rather theory, is that the Salt water is deposited onto the roads and pavements near the coastline, during flood conditions…which occur often enough. Then the water evaporates… and the salt is left behind… and is then reconstituted by rain…and then comes into contact with cars and bikes and whatever else? That seems like an easy out, but many of the items that are being consumed by rust or corrosion, are not vehicles and do not travel on roads and yet… they Rusto with a Gusto !
So my esteemed colleagues…what say you? Am I asking an embarrassing question or one that is deceptively more complex than what one thinks initially?