Pure aluminum is divided into high-purity aluminum and industrial pure aluminum according to its purity.The mechanical strength of pure aluminum is not high,but it has good plasticity and good corrosion resistance.In particular,the high plasticity and excellent corrosion resistance of pure aluminum have been widely used in aluminum products.
Aluminum is an active amphoteric metal,which can react with both acids and bases,especially in alkaline solutions,due to the complex catalysis of OH-,aluminum is uniformly corroded in pure alkaline solutions,and it is With the increase of pH value or the increase of temperature,the corrosion rate also increases accordingly.If the purity of aluminum is increased,its corrosion rate will decrease correspondingly under the same conditions.
The purity of pure aluminum has a significant impact on the corrosion behavior of aluminum.The higher the purity,the greater the tendency of uniform corrosion,and the more difficult it is to achieve the desired texture etching effect.
In general,the texture etching performance of pure aluminum is relatively good,whether it is a single acid or alkaline etching solution,a better texture effect can be obtained.For surface effects that require high roughness,the acid-base two-step method can also get very good results.Especially 1050 and 1010,the texture uniformity is excellent after acid-base two-step etching.Domestic aluminum is used more with L6,and the texture effect is not inferior to imported aluminum.In addition,domestic materials have a price advantage,which can be given priority in production.
