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I wandered up over the brow of a gravelly track, not realising it was a front drive. The white haired woman (Fiona McTaggerty Taggert, without beards) met me as she stepped out of her elderly Hyundai. She explained the rusty old truck was her son's. He's now 50 if she remembers rightly and he bought it to do up one day. Somehow that day seems to have slipped by and his dreams of a restored old truck lie rotting away in an out of sight quarry behind the Tioram cafe. She explained some vandals got to it and smashed it up. I imagine it was pristine before that
Rust is the common name for a very common compound, iron oxide. Iron oxide, the chemical Fe2O3, is common because iron combines very readily with oxygen -- so readily, in fact, that pure iron is only rarely found in nature. Iron (or steel) rusting is an example of corrosion.
When a drop of water hits an iron object, two things begin to happen almost immediately. First, the water, a good electrolyte, combines with carbon dioxide in the air to form a weak carbonic acid, an even better electrolyte. As the acid is formed and the iron dissolved, some of the water will begin to break down into its component pieces -- hydrogen and oxygen. The free oxygen and dissolved iron bond into iron oxide, in the process freeing electrons.
The chemical compounds found in liquids like acid rain, seawater and the salt-loaded spray from snow-belt roads make them better electrolytes than pure water, allowing their presence to speed the process of rusting on iron and other forms of corrosion on other metals.
This is a close-up photo of seaweed and patterns of rust on an iron panel on the wharf at Port Maitland Beach.
"And the rest is rust and stardust."
Vladimir Nabokov
There is much to appreciate what time wears away. We should also remember to apply that thought to our fellow human beings.
What remains of a 1937 Chevy coupe at Bodie State Historical Park, Bridgeport, California.
Texture Grunge Ipiccy
This is a photo of rust blisters and streaming rust stains on the side of a metal tank. I love their rather alien and marine quality.
A metal goods container in the car park of the local garage is very worn and weathered as the green paint peels back exposing the rusted metal beneath.