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(1) Coloring colouring usually refers to the coloring treatment of the colored object. For example, the treatment of an unclosed anodic oxide film immersed in an appropriate colorant.

(2) Colorant colourant is used to colour the oxide film. Commonly used are dyes (organic or inorganic), pigments and metal salts.

(3) Pigments are almost insoluble colored powdery substances.

(4) Dyestuff can dye its own color onto other materials (such as anodic oxide film), usually soluble or insoluble organic compounds (colorants).

(5) The color colour is determined by the composition of the incident spectrum, the reflection or transmission of the object to light, and the photosensitivity of the observer.

(6) Electrolytic colouring is colored by electrodeposition of metal or metal oxide in porous structure of anodic oxide film.

(7) The color intensity of fading fading decreases.

(8) The discolored bleeding fades due to the dissolution of dyes in the dyed anodic oxide film. For example, the dissolution of dyes (pigments) in the sealing process.

(9) The sealing of anodic oxidation decoating anodic oxidation film is treated by adsorption, chemical reaction or other mechanism to increase the fouling resistance, corrosion resistance, improve the durability of the oxide film color and other required properties.

(10) Steamsealing anodic oxide film for steam sealing is sealed with saturated or unsaturated steam.

(11) Sealing nickel sealing with nickel salt to seal the oxide film. It is mainly nickel acetate.

(12) The sealing process of chromate (dichromate) in the solution containing dichromate [(commonly used potassium dichromate or sodium dichromate) 5%(m/m)] is generally to increase the anti-corrosion ability.

(13) When the boehmite anodic oxide film of boehmite is sealed in water or steam at a temperature higher than 80 C, the aluminium oxide monohydrate is produced by the hydration of the film.

(14) A kind of aluminium oxide trihydrate produced by the hydration of the Bayerite anodic oxide film of Bayer Hugh (alumina trihydrate) when it is sealed in water or steam at too low temperature (below 80 C)

(15) Deionization on emineralization removes ions from solution by ion exchange.