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How to Attach Pigment to Titanium Oxide

Metals such as titanium and aluminum can be colored using a method known as anodizing. When immersed in an electrified solution, an oxide film forms on the metals and gives them a new tint, which varies based on the voltage used. In the case of titanium, the process and setup for anodizing are relatively simple.

Things You'll Need

Rubber gloves
Rubber container
Power supply
Alligator clips
An electrolyte solution
A piece of scrap metal

Instructions

- 1
  Put on a pair of rubber gloves to guard against shock or possible electrocution.
- 2
  Mix the electrolyte solution in a sturdy rubber container. Baking soda mixed with water, salt water or soft drinks work well.
- 3
  Set up the power source. If a pre-made power supply is not available, set up a row of 9-volt batteries. Use alligator clips to connect them in series, attaching the negative terminal of one battery to the positive of the next and so on until the desired amount of voltage is reached.
- 4
  Clean the titanium to be colored with isopropyl alcohol -- any dirt or fingerprints left on the metal will affect the outcome of the anodizing process.
- 5
  Attach the positive electrode of the power supply to the titanium piece. Attach the negative electrode to the cathode (a piece of scrap metal will work), and submerge in the electrolyte solution.
- 6
  Carefully lower the titanium piece into the electrolyte solution. Adjust the voltage of the power supply to anywhere between 20 to 100 volts. Allow the metal to soak for a few seconds until it takes on its final color. Try experimenting with voltages to achieve the desired tint.
- 7
  Remove the titanium from the solution, and wash it off. Rinsing the metal gets rid of any residue that has accumulated on the surface and leaves it with a more vibrant hue.

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