Normal Alu needs a lot of preparation ie: zinc oxide as a primer before you can paint it.
Anodized surfaces are inert and as long as not waxed/polished etc will remain slightly pourus. Anadization is THE BEST surface preparation before painting. Nothing else needs to be done. Don't expect to be able to get the paint off again though.
ANSWER: you can use anything you want, just make sure to use a primer paint designated for metal and make sure the surface is clean and dry. I would look into using an automotive paint and primer. They will last you the longest time.
sand and file to get a nice smooth surface
Surface.
If it's alkali then you'd have to use a neutralizer, like water, ammonia or baking soda, prior to painting. The pH of the surface has to be below 10 prior to painting.
painting realistic scenes on a two-dimensional surface
The process is generically called "painting". It may be defined more specifically as drawing (with various materials) or coloring.
Yes. I've used it on aluminum as a permanent repair. I'd recommend prepping the surface thoroughly.
Extruded aluminum is aluminum that is melted down and extruded, pushed through a certain 2d shaped hole. This can result in square tube, rectangular tube, an L shaped extrude, and an infinite array of other shapes. Powder coated aluminum is aluminum that could be extruded aluminum, that is cleaned, coated with a colored plastic powder, and then baked so that the plastic powder melts and forms a smooth, nice and even coat of colored plastic over the part. This is basically painting the part. Anodized aluminum is aluminum, again this could be extruded aluminum, but it couldn't be powder coated aluminum, that is put in a chemical solution, possibly sulfuric acid, and then a current is run through the aluminum. This causes a reaction to occur where a layer of aluminum oxide gathers on the surface of the part. The processes is then stop and the part can be colored if desired. Anodozing aluminum gives the part better corrosive resistance and makes the surface tougher and harder than it would have been if it had not been anodized. It does add thickness to the part which can be a downside, but it also is lighter than a powder coat if a paint job is desired.
Anodized cookware means aluminum cookware with an aluminum oxide coating. Don't cook alkaline foods in it; this will eat away the coating. Use non-metal tools to prevent scratching the surface. Wash by hand rather than in a dishwasher; most dishwashing detergents are strongly alkaline and will eat the coating away quickly.
Manufacturers found that aluminum can be anodized to make it stronger, slicker, more durable, and non-reactive with foods. This applies to many types of cookware, including Circulon and Calphalon.Calphalon, a maker of anodized aluminum cookware explains it this way:"Hard-anodization is an electro-chemical process that hardens aluminum. (Hard-Anodized aluminum is 30% harder than stainless steel.) During hard-anodization, aluminum is submerged in an acid bath, then subjected to electrical charges. The result is a chemical reaction wherein the surface of the aluminum combines with oxygen to become aluminum oxide. This reaction is also known as oxidation, a process which occurs spontaneously in nature. Hard-anodization is actually controlled, accelerated oxidation.
Hard anodized cookware is produced for the purpose of stopping food from sticking while cooking. Anodizing is a chemical process that hardens the surface of the cookware to a point where the pan is no longer porous.
There are some documented "lost" technologies developed by the alchemists. Examples include flexible (bendable) glass and methods for coloring metals through (not just surface coloration, as in anodized aluminum).
Stainless steel, tin lined copper, non-anodized aluminum, clay, enamel, glass, or plastic are all non-reactive. A reactive pan is one made from a material that reacts chemically with other foods, such as aluminum, copper and cast iron. The materials react with acidic foods, imparting a metallic taste and will sometimes discolor light colored soups and sauces a light green or gray! Anodized aluminum has a hard, corrosion-resistant surface that helps prevent discoloration, so it is ok to use. Also, avoid stirring light-colored sauces and soups with an non-anodized aluminum metal spoon or whisk.
Anodized cookware is another variant of non-stick. It is extremely hard, non-porous and there is no concern of a surface material contaminating food if scratched. You can use metal utensils with it.
Dear Friends I was in the window manufacturing business for over twenty years, but our business had nothing to do with pots. Our windows (and curtainwall) used aluminum extrusion. Pots, to the best of my knowledge, are formed by a CASTING process. In both cases, anodizing is a way of drawing a thin layer of oxide out of the aluminum. In a way, it is like getting the aluminum to rust (to borrow the word from the world of steel and iron) which protects the rest of the aluminum below the surface. So, my answer: half the world's pots and pans are made from aluminum, but that doesn't mean they are anodized. Maybe they are, and maybe they aren't. In the window business, we sometimes anodized the aluminum, but just as often it was painted. Whether or not it was painted or anodized was the choice of the purchaser of the products, or more often specified by the architect on the project. BOTTOM LINE: don't confuse aluminum with the anodizing process. Anodizing is but one way of finishing aluminum. Painting is unquestionably another. Normally, an anodic (anodized) coating is silver. This is the 'natural' finish of anodizing. Alternatively, the applicators can make different colours of anodizing. You will often see a 'bronze' (dark-brown) colour on a door in a commercial building, restaurant, school, etc. I believe(this is not my area of expertise; you could check this out on Alcoa's web-site or Kawneer's) this is done by including different chemicals during the anodizing process. In fact, they can produce virtually every shade of anodizing. As well, anodizing can be done in combination with application of dyes, to elicit a range of 'rainbow' (blue, red, green, etc) colours. However, in the window business, these are very rarely done, because the colours are inconsistent, and the process it very expensive. This is why (high-quality) paint finishes are much more the norm in modern-day architecture. So to answer your question: the pots are aluminum (unless you find that they're magnetic -- then they're steel or copper) but they may not have an anodic finish. Fred from Toronto, Canada
You can use acrylic paint on plastic provided you prepare the surface first. Before you begin painting you will have to prime it with paint that is suitable for plastic, such as an enamel paint. Once you have finished painting with the acrylic paint, the project will need a top coat.
Aluminum oxide - Al2O3.
oxidation of the aluminum surface
painting realistic scenes on a two-dimensional surface