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  2. Chromate conversion coating - Wikipedia

    en.wikipedia.org/wiki/Chromate_conversion_coating

    The formula was meant to be dissolved in water at the concentration of 9.0 g/L, giving a bath with pH = 1.5. It yielded a light gold color after 1 min, and a golden-brown film after 3 min. The average thickness ranged between 200 and 1000 nm. [6] Iridite 14-2 is a chromate conversion bath for aluminum.

  3. Gold–aluminium intermetallic - Wikipedia

    en.wikipedia.org/wiki/Gold–aluminium_intermetallic

    Au 5 Al 2 typically forms at 95% of Au and 5% of Al by mass, its melting point is about 575 °C, which is the lowest among the major gold-aluminum intermetallic compounds. AuAl 2 is a brittle bright-purple compound, with a composition of about 78.5% Au and 21.5% Al by mass.

  4. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Black for aluminum. Boil a solution of 20 g ammonium molybdate and 5 g of sodium thiosulfate in a liter of water, immerse the objects, rinse, dry, wax or lacquer after the development of color. [31] Lustre colours. Use a solution of 280 g of sodium thiosulphate, 25 g of cupric acetate and 30 g of citric acid. It can be used on copper and its ...

  5. Plating - Wikipedia

    en.wikipedia.org/wiki/Plating

    Plating is a finishing process in which a metal is deposited on a surface. Plating has been done for hundreds of years; it is also critical for modern technology. Plating is used to decorate objects, for corrosion inhibition, to improve solderability, to harden, to improve wearability, to reduce friction, to improve paint adhesion, to alter conductivity, to improve IR reflectivity, for ...

  6. Silvering - Wikipedia

    en.wikipedia.org/wiki/Silvering

    Although aluminum also oxidizes quickly, the thin aluminum oxide (sapphire) layer is transparent, and so the high-reflectivity underlying aluminum stays visible. In modern aluminum silvering, a sheet of glass is placed in a vacuum chamber with electrically heated nichrome coils that can evaporate aluminum. In a vacuum, the hot aluminum atoms ...

  7. Dad Allegedly ‘Stole Money' from His Spouse and Kids to ...

    www.aol.com/dad-allegedly-stole-money-spouse...

    A New Jersey family is suing DraftKings after a father of two gambled away more than $1 million of his family’s money across four years. The man, known by his username Mdallo1990, allegedly lost ...

  8. Gold vs. silver: Which is better for your portfolio?

    www.aol.com/gold-vs-silver-better-portfolio...

    When prices across the economy start climbing, gold and silver often become go-to alternative assets for investors. Gold, in particular, has been an effective inflation hedge. To illustrate this ...

  9. Rolex watch prices are through the roof this year. Thank ...

    www.aol.com/rolex-watch-prices-roof-thank...

    Rolex declined CNN’s request for comment, but the luxury watchmaker annually increases prices, with the rising price of gold largely responsible for jacking up prices for gold watches twice in 2024.

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