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  2. Seasoning (cookware) - Wikipedia

    en.wikipedia.org/wiki/Seasoning_(cookware)

    Seasoning is the process of coating the surface of cookware with fat which is heated in order to produce a corrosion resistant layer of polymerized fat. [1] [2] It is required for raw cast-iron cookware [3] and carbon steel, which otherwise rust rapidly in use, but is also used for many other types of cookware. An advantage of seasoning is that ...

  3. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Brown or black can be used as a base color for copper patina. If the amount of chlorides decreases the color will be more bluish-green, if carbonate decreases, more yellow-green. [27] Black for copper. Solution of sodium polysulfide 2.5%, items must be submerged in the solution after color developing, wash, dry and wax or varnish colored object ...

  4. Bluing (steel) - Wikipedia

    en.wikipedia.org/wiki/Bluing_(steel)

    The blue appearance of the oxide film is also used as an indication of temperature when tempering carbon steel after hardening, indicating a state of temper suitable for springs. Bluing is also used in seasoning carbon steel cookware, to render it relatively rust-proof and non-stick.

  5. An Obsessive's Guide to Copper Pots - AOL

    www.aol.com/obsessives-guide-copper-pots...

    Where, how, and why to buy new and vintage copper pots. Plus, where to send them if they need re-tinning or just a good polish. An Obsessive's Guide to Copper Pots

  6. The Essential Copper Pots and Pans for a Well-Appointed ... - AOL

    www.aol.com/lifestyle/essential-copper-pots-pans...

    From the best sets to nonstick models handmade in Italy, here are 10 of the best copper cookware items. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290 ...

  7. Rokushō - Wikipedia

    en.wikipedia.org/wiki/Rokushō

    Rokushō is used to treat a number of metals, including raw natural copper, which holds impurities, purified copper, and copper alloy mixes with two to five metals, to produce irogane metals, including: shakudō, an alloy of copper and gold, which becomes black to dark blue-violet; shibuichi, an alloy of fine silver and copper (in a higher percentage than sterling), which turns grey to misty ...

  8. Patina - Wikipedia

    en.wikipedia.org/wiki/Patina

    Copper roof on the Minneapolis City Hall, coated with patina The Dresden Frauenkirche.The church was destroyed during the bombing of Dresden in 1945 and then rebuilt from 1993 to 2005 with new material; the stones with the black patina are the parts that survived the firebombing from the original 18th-century church.

  9. 'Dark Waters': Here's the toxic reason why you should toss ...

    www.aol.com/lifestyle/dark-waters-heres-toxic...

    You should at least entertain the idea of abandoning nonstick pans entirely. Thanks in no small part to Bilott's extensive legal efforts, PFOA is no longer used in the production of nonstick ...

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