Do you think aged metal is like a fine wine? Or do you prefer a mirrorlike or polished look? To learn more about decorative metal, check out the free download below:. These sleek, modern products are now popular in not only commercial architecture, but in residential applications as well. Choosing the right aesthetic for your architectural project is more complex than it may seem. There are many metals to choose from, and many types of finishes available. Each finish provides its own unique aesthetic, and the finished effect will shift depending on the richness, lighting, and[ For free education on materials, applications and more for both OEM and architectural roll forming -- delivered right to your email.
Which Metals Turn Green? Here's a closer look: Which Metals Turn Green? Of course, copper is just one metal that turns green What About Other Metals? Does brass turn green? But beyond cosmetics, there are some practical reasons why you might want it.
Copper oxide is an interesting substance. The thicker the copper oxide layer gets, the more it will resist further corrosion. The result is that rust can eat away entire structures over time. One example is the Statue of Liberty, built in Over years of being exposed to the elements later, the thickness of the copper oxide layer is only 0.
Or you might just prefer the bright look of copper instead of the dull greenish color of the patina. Since copper is a popular material for things like wires and electrical connections, oxidation is a complete pain in the backside. Ok, so copper and metals with a lot of copper in them will eventually turn green on their own by just being exposed to air and water. But what if you want to speed this process up? First off, clean the metal thoroughly with a degreaser.
Any oils will end up protecting the metal from oxidizing and turning green. String the copper up and hang it in the jar just above the ammonia. Seal the jar. The ammonia fumes will create a thin patina within a few hours. If you want a thicker patina, just leave it in there for longer. Cleaning is an extremely important step if you want to do it right the first time. Pretty well everyone has seen this exact trick using Coca-Cola. Only use distilled water for cleaning and rinsing.
This method may be impractical for large items. If your item is quite large or valuable, you should consult a professional for advice. Once you have cleaned your bronze, it will immediately begin to oxidize again.
You can only prevent the oxidation by protecting the bronze from the air. One of the easiest methods of doing this is coating the bronze with clear lacquer. However, you must be sure to coat the entire piece with lacquer.
You can also coat bronze with microcrystalline wax thinned with mineral spirits or lacquer thinner. Brush the wax onto the piece, let the mineral spirits or lacquer thinner evaporate, then rub the piece with a clean cloth.
For both methods, the bronze must be completely clean and grease- or oil-free. However, a natural patina usually develops over a man-made patina that was a. Different chemicals react with the bronze to achieve different colors. One of the most common patinas is Liver of Sulfur potash which results in a golden-brown to almost black color. Other chemicals include Ferric Nitrate golds, browns and reds and Cupric Nitrate greens and blues.
They can also be used in layers to achieve a variety of artistic effects. While most patinas are applied hot, patinas can also be applied cold.
Cold patinas are used most frequently to make repairs. Historically, Liver of Sulfur has been the patina of choice for most sculpture for the rich chocolate brown color most people are familiar with. Rodin would layer green patina over a base coat of brown to achieve a marbleized effect that became known and Rodin green.
In later years metallurgists found many other chemicals that would result in a variety of colors. Today, while multicolored patinas are quite popular, most private commission sculpture is still done using more traditional browns. Information from wikipedia and www. A bronze coin of the Han Dynasty — circa 1st century BC. You are commenting using your WordPress.
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