Here's what wikipedia says about rust:
Rust is composed of iron oxides. In colloquial usage, the term is applied to red oxides, formed by the reaction of iron and oxygen in the presence of water or air moisture. Other forms of rust exist, like the result of reactions between iron and chloride in an environment deprived of oxygen – rebar used in underwater concrete pillars is an example – which generates green rust. Several forms of rust are distinguishable visually and by spectroscopy, and form under different circumstances.[1] Rust consists of hydrated iron(III) oxides Fe2O3nH2O and iron(III) oxide-hydroxide FeO(OH)Fe(OH)3.
Given sufficient time, oxygen, and water, any iron mass will eventually convert entirely to rust and disintegrate. Surface rust is flaky and friable, and provides no protection to the underlying iron, unlike the formation of patina on copper surfaces. Rusting is the common term for corrosion of iron and its alloys, such as steel. Many other metals undergo equivalent corrosion, but the resulting oxides are not commonly called rust.
Google define:friable friable
/ˈfrīəbəl/
Adjective
Easily crumbled: "the soil was friable between her fingers".
Synonyms
brittle - fragile - crumbly - frail - crisp - short
I thought it had something with what grows in fields,...
Anyway
Originally Posted by zhy
no problem pcb!
and OP, if youre a chemist like I am, you shoud know that rust is aluminium oxide forming (Al2O3), and alkalin ions such as Ca+2, Fe+3, Mg+2 are catalists in oxidations (notice I mentionned calcium?!)
You forgot regular salt sodium chloride NaCl
few tricks not to get well rust is
1- Rustproof once a year
2- wash your car often, even in winter!
3- Grease your wells few times in the winter (Vaseline should work)
4- give your car a thick layer of wax right before winter strikes
I was retarded enough not to do either those 4 this winter, and my 4 wheel arches are rusted, as well as my door corners. You can alwais bring your car to a body shop... but that wouldn't be DIY right? we're here to fix our own cars! Im gonna do a DIY walkthrough on how to remove rust & bring back the original color this summer, as well with some pictures before/after.. basically what you gotta do is bring down your arch to bare metal, body filler, prime, then color-match with a can of paint you had matched to your cars color in a specialized shop (NAPA mixes my sunlight silver, 22v)
good luck!
I'm looking forward to a how-to,... I did some rust last summer and did ok up until the application of the paint (Clasic Red A3E Car Quest mixed it up for $20)
It looks like shyte
You can't really see it in the pic but it's all wrinkled and crappy (I kept spraying during that 1/2 - 24 hour no-spray window)
I need to delegate that final step to a more qualified technician.
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