Anodizing Method of Marine Grade Aluminum Sheet

Today we are going to talked about the topic “anodizing method of marine grade aluminum sheet”. Anodized aluminum has many advantages, and it helps to improve the corrosion resistance ability of marine grade aluminum sheet, and this technology is usually used in marine. Haomei Aluminum is a manufacturer in China, which can provide marine grade aluminum sheets for sale. And what you need to do is to click the message box or the email link down below the passage to leave a message to us, and we will reply back offering clear and accurate answers to you. Now let’s get started and learn about anodizing methods a little bit!

Anodized aluminum

The anodizing method of marine grade aluminum sheets is to place aluminum sheet as an anode in an electrolyte such as sulfuric acid, apply an anode voltage for electrolysis, and form an Al2O3 film on the surface of the aluminum. The principle is essentially the electrolysis of water.

Common process

Sulfuric acid method: low cost; high porosity, thicker membrane (5~30um)

Oxalic acid method: high cost; low porosity, thicker membrane (8~20μm)

Phosphoric acid method: high porosity, can be used as a plating bottom layer

Anodizing basically generates a porous oxide film with high porosity and strong adsorption, which can be used as the bottom layer of coating to increase adhesion.

Micro-arc oxidation technology in marine grade aluminum sheet

Micro-arc oxidation technology refers to the new technology of in-situ generation of oxide ceramic film under the combined action of electrochemistry, plasma chemistry and thermochemistry by placing aluminum alloy in electrolyte to generate spark discharge on the metal surface. By comparison, it can be found that the aluminum alloy micro-arc oxidation ceramic film has good corrosion resistance to seawater and salt water, and can be used as an anti-corrosion layer for ships, submarines, and deep-water equipment.

Chemical conversion technology

Chemical conversion technology refers to the process in which marine grade aluminum sheet and its aluminum alloys are treated in a solution containing an oxidant to form a film on the surface. It usually includes phosphating treatment, chromate treatment and rare earth conversion coating treatment.

All the above-mentioned is the basic introduction of the anodizing method of marine grade aluminum sheet. Thank you for your patience in reading! For more details, please refer to “marine grade aluminum sheet”. As a leading aluminum manufacturer and supplier in China, Haomei Aluminum Co., Ltd. provides marine grade aluminum sheets for sale, welcome to inquire and order. Should you be interested in buying aluminum product, please contact us at:

E-mail:sale@alusuppliers.com

1103, No.14 Waihuan Road, CBD, Zhengzhou, China