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Pickling (metal)
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Pickling is a metal surface treatment used to remove impurities, such as stains, inorganic contaminants, and rust or scale from ferrous metals, copper, precious metals and aluminium alloys. A solution
Hard soldered silver rings placed in diluted sulfuric acid...
Hard soldered silver rings placed in diluted sulfuric acid...
... to remove oxide and flux.
... to remove oxide and flux.
A worker moves sheets of tin for pickling in a tin factory in South Wales during World War I
A worker moves sheets of tin for pickling in a tin factory in South Wales during World War I
Hydrogen embrittlement
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Hydrogen embrittlement, also known as hydrogen-assisted cracking or hydrogen-induced cracking, is a reduction in the ductility of a metal due to absorbed hydrogen. Hydrogen atoms are small and can per
Pickling (metal)
…painting processes. Acid cleaning has limitations in that it is difficult to handle because of its corrosiveness, and it is not applicable to all steels. Hydrogen embrittlement becomes a problem for some alloys and high-carbon steels. The hydrogen from the acid reacts with the surface and makes it brittle, causing cracks…
Hydrogen-induced cracking (HIC)[clarification needed]
Hydrogen-induced cracking (HIC)[clarification needed]
Crack in a hardened steel due to hydrogen, observed by scanning electron microscopy (SEM).
Crack in a hardened steel due to hydrogen, observed by scanning electron microscopy (SEM).