relaxificate

relaxificate t1_j6gdvu3 wrote

Most of the corrosion happens while the steel is exposed to the liquid vinegar. Once the vinegar evaporates you’d have a pitted texture with rust. Imagine that’s sample A and we have sample B that’s the same but after that first flash-rust, we rinsed and neutralized sample B. From that point on, I think sample A might corrode faster due to remnant vinegar but I’m not sure, and I imagine that if it did, the corrosion rates of the two samples would equalize after some time.

Edit - to explain further, what makes vinegar increase future corrosion is the rough surface finish it creates at initial exposure. The smoother the surface, the more resistant the surface is to rust. Sandblasting is exactly the same (it removes rust, but also primes the steel for increased future rust).

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relaxificate t1_j6g0mjq wrote

Incorrect again. All acids attack and corrode steel. Vinegar can be used to remove surface rust because it dissolves the iron and iron oxide. However, the steel must then be fully rinsed and the vinegar must be neutralized, or else additional extreme rust will be created. Vinegar absolutely accelerates corrosion. I’m an engineer with 15 years of engineering/metalworking experience. Moreover, the statements I’m making can be demonstrated as true with paper/pencil chemistry equations.

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relaxificate t1_j6fe513 wrote

I don’t question the merits of vinegar, or baking soda. I question the claims pertaining to the mixture of the two. What happens when they mix is not a matter of opinion, it’s a matter of fact. What I object to most of all is the treatment of scientific/factual matters as if they are subject to opinion. That treatment represents a dumbing down of our society; it’s anti-intellectual- and I’d make the case that anti-intellectualism is a cancer to society. It’s toxic and deserves to be treated as such.

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relaxificate t1_j6dr5m3 wrote

Sorry for mixing you up with OP - I edited my comment accordingly. You've resorted to name-calling, whereas I'm arguing the facts in question. The word "immediately" appears nowhere in OP's post, nor does any comment regarding the timeline of mixing/application.

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relaxificate t1_j6do4ys wrote

Yes but the clock starts ticking the moment you combine the ingredients, not the moment you begin scrubbing. The fact that this concept was omitted from the initial post demonstrates that OP doesn't really understand the chemistry, and this misunderstanding casts doubt on OP's claims. Nowhere in OP's post, or any post that supports the use of vinegar & baking soda, is a recommendation to mix immediately before use and discard after 10 minutes.

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