How does the metal used for galvanization prevent the rusting of iron
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Galvanizing protects from rust in a number of ways: It forms a barrier that prevents corrosive substances from reaching the underlying steel or iron. ... The zinc protects its base metal by corroding before iron. The zinc surface reacts with the atmosphere to form a compact, adherent patina that is insoluble in rainwater.
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ɢᴀʟᴠᴀɴɪᴢɪɴɢ ᴘʀᴏᴛᴇᴄᴛᴤ ғʀᴏᴍ ʀᴜᴤᴛ ɪɴ ᴀ ɴᴜᴍʙᴇʀ ᴏғ ᴡᴀʏᴤ: ɪᴛ ғᴏʀᴍᴤ ᴀ ʙᴀʀʀɪᴇʀ ᴛʜᴀᴛ ᴘʀᴇᴠᴇɴᴛᴤ ᴄᴏʀʀᴏᴤɪᴠᴇ ᴤᴜʙᴤᴛᴀɴᴄᴇᴤ ғʀᴏᴍ ʀᴇᴀᴄʜɪɴɢ ᴛʜᴇ ᴜɴᴅᴇʀʟʏɪɴɢ ᴤᴛᴇᴇʟ ᴏʀ ɪʀᴏɴ. ᴛʜᴇ ᴢɪɴᴄ ᴤᴇʀᴠᴇᴤ ᴀᴤ ᴀ ᴤᴀᴄʀɪғɪᴄɪᴀʟ ᴀɴᴏᴅᴇ ᴤᴏ ᴛʜᴀᴛ ᴇᴠᴇɴ ɪғ ᴛʜᴇ ᴄᴏᴀᴛɪɴɢ ɪᴤ ᴤᴄʀᴀᴛᴄʜᴇᴅ, ᴛʜᴇ ᴇxᴘᴏᴤᴇᴅ ᴤᴛᴇᴇʟ ᴡɪʟʟ ᴤᴛɪʟʟ ʙᴇ ᴘʀᴏᴛᴇᴄᴛᴇᴅ ʙʏ ᴛʜᴇ ʀᴇᴍᴀɪɴɪɴɢ ᴢɪɴᴄ.
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