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  2. How to Clean Tarnished Silver, According to Cleaning Experts

    www.aol.com/lifestyle/clean-tarnished-silver...

    For silver that is heavily tarnished, mix a paste of three parts baking soda to one part water. Wet the silver and apply the cleaner with a soft, lint-free cloth (not paper towels).

  3. Conservation and restoration of silver objects - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    Whether silver plating or pure silver, the composite of the metal will tarnish when exposed to air and sulfur. Tarnish is a chemical reaction on the surface of metal (copper, brass, silver, etc.) and causes a layer of corrosion. In the case of silver tarnish, the silver combines with sulfur and forms silver sulfide (Ag 2 S), which is

  4. Pickling (metal) - Wikipedia

    en.wikipedia.org/wiki/Pickling_(metal)

    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. [1]

  5. Kitchen knife - Wikipedia

    en.wikipedia.org/wiki/Kitchen_knife

    A kitchen knife is any knife that is intended to be used in food preparation.While much of this work can be accomplished with a few general-purpose knives — notably a large chef's knife and a smaller serrated blade utility knife — there are also many specialized knives that are designed for specific tasks such as a tough cleaver, a small paring knife, and a bread knife.

  6. Tarnish - Wikipedia

    en.wikipedia.org/wiki/Tarnish

    Tarnish does not always result from the sole effects of oxygen in the air. For example, silver needs hydrogen sulfide to tarnish, although it may tarnish with oxygen over time. It often appears as a dull, gray or black film or coating over metal. Tarnish is a surface phenomenon that is self-limiting, unlike rust. Only the top few layers of the ...

  7. Parts cleaning - Wikipedia

    en.wikipedia.org/wiki/Parts_cleaning

    Metal surface cleaning and metal cleaning do not consider the increasing usage of plastics and composite materials in this sector. The term component cleaning leaves out the cleaning of steel sections and sheets, and finally, degreasing only describes a part of the topic, as in most cases, chips, fines, particles, salts, etc. also have to be ...

  8. Conservation and restoration of iron and steel objects

    en.wikipedia.org/wiki/Conservation_and...

    Iron, steel, and ferrous metals constitute a large portion of collections in museums. The conservation and restoration of iron and steel objects is an activity dedicated to the preservation and protection of objects of historical and personal value made from iron or steel. When applied to cultural heritage this activity is generally undertaken ...

  9. List of blade materials - Wikipedia

    en.wikipedia.org/wiki/List_of_blade_materials

    [7] 420A (420J1) and 420B (420J2) are economical, highly corrosion-resistant stainless steel grades. Knife manufacturers use this material in budget knives, also in diving knives due to its high corrosion resistance. [7] 440 series has three types: 440A, 440B, and 440C. 440A is a relatively low-cost, highly corrosion-resistant stainless steel.

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