Aluminium alloy positive pole oxidizes

Intent of ―, experiment

(1) understands the fundamental; that aluminium alloy positive pole oxidizes

(2) learns to vitriolic positive pole oxidizes and weigh chromic acerbity Potassium to shut processing technology and operation;
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(3) detect with a bit law of fill around be able to bear or endure corrode function.

2, experiment principle

Aluminium undertakes zincous oxidation in vitriolic solution, produce following electrochemistry echo:

Aluminium oxidizes and produce oxidation film. Ply of this oxidation film amounts to a few micron to come hundreds of micron, its anticorrosion function, wear-resisting function compares the oxidation film that aluminium makes like that in atmosphere culmination to be close friends more, and it is poriferous mix achromatic, have adsorptive ability of height, can catch all sorts of color, via shutting processing hind, color wear is good.

The intent that shuts processing depends on raising the sex that fight corrode, wearability, insulating properties. The method that shuts processing has a lot of kinds, should choose according to particular case apply.

Oxidation of aluminium alloy positive pole uses property according to its different, divide again for vitriolic and zincous oxidation, chromic acid positive pole of zincous oxidation, oxalic acid oxidizes, oxidation of horniness positive pole, porcelain pledges zincous oxidation, vitriolic porcelain pledges positive pole oxidizes etc. Its technology characteristic has each different, good is different also, should according to actual condition, choose appropriate technology.

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