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2. Copper electroplating - Wikipedia

   en.wikipedia.org/wiki/Copper_electroplating

   Copper plating on aluminium. Copper electroplating is the process of electroplating a layer of copper onto the surface of a metal object. Copper is used both as a standalone coating and as an undercoat onto which other metals are subsequently plated. [1]

3. The Hawaiian steel guitar changed American music. Can ... - AOL

   www.aol.com/news/hawaiian-steel-guitar-changed...

   Quincy Cortez plucks at a slim black box laid across his legs, his fingers flashing silver. Steel strings twang with each pull from the metal rings — wearable guitar picks — adorning his right ...

4. Chemical coloring of metals - Wikipedia

   en.wikipedia.org/wiki/Chemical_coloring_of_metals

   In the case of titanium, niobium, and stainless steel, the colour formed is dependent on the thickness of the oxide (which is determined by the anodizing voltage). Chemically coloring a metal is distinct from simply coating it using a method such as gilding or mercury silvering , because chemical coloring involves a chemical reaction, whereas ...

5. Electroplating - Wikipedia

   en.wikipedia.org/wiki/Electroplating

   Electroplating of acid gold on underlying copper- or nickel-plated circuits reduces contact resistance as well as surface hardness. Copper-plated areas of mild steel act as a mask if case-hardening of such areas are not desired. Tin-plated steel is chromium-plated to prevent dulling of the surface due to oxidation of tin.

6. String (music) - Wikipedia

   en.wikipedia.org/wiki/String_(music)

   Electric guitar strings are usually wound with nickel-plated steel; pure nickel and stainless steel are also used. Bass guitar strings are most commonly wound with stainless steel or nickel . Copper , gold , silver , and tungsten are used for some instruments.

7. Electrochemical coloring of metals - Wikipedia

   en.wikipedia.org/wiki/Electrochemical_coloring...

   cathode made of platinum or stainless steel (needle), anode nickel-plated or gold-plated copper or brass or polished steel, duration 10 s, distance between cathode and anode 3 mm . [20] An electrolyte of 100 g of litharge dissolved in 0.5 l of water can also be used in which 100 g of NaOH is dissolved.