Metals must contain iron. Then the solution can only be to remove the oxygen during the annealing process. Bright annealing is annealing in an oxygen-free environment. The gas that replaces oxygen is called the protective gas.
Metals must contain iron. Then the solution can only be to remove the oxygen during the annealing process. Bright annealing is annealing in an oxygen-free environment. The gas that replaces oxygen is called the protective gas.