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Micro arc oxidation surface treatment of magnesium alloy
Micro-arc oxidation technology is a green and environmentally-friendly emerging surface treatment technology. Mainly used for surface treatment of light metals such as aluminum, magnesium, titanium and their alloys. This method can effectively grow a uniform ceramic film on the surface of the base material.
| Material | Magnesium alloy |
| Type | AZ31,AZ91,AZ80,WE43,ZK60,AM60 |
| Color | Ceramic white, black, army green, brown |
| Film thickness | About 10um,Different thicknesses can be processed according to product requirements. |
| Application | Aerospace, military industry, rail transit, electronic products, biomedical products, bicycles, architectural decoration, etc. |
Magnesium alloy micro-arc oxidation surface treatment is a new technology for in-situ growth of oxide ceramics on the surface of non-ferrous metals. The use of micro-arc oxidation technology for surface ceramization of magnesium and its alloy materials has the advantages of simple process, small footprint, strong process capacity, high production efficiency, and suitable for batch industrial production.
Magnesium alloy micro-arc oxidation electrolyte does not contain toxic substances and heavy metal elements, and the electrolyte (environmental protection type) has strong anti-pollution ability and high regeneration and reuse rate, so it has little environmental pollution and meets the needs of environmental protection and clean production; it can be obtained by changing the process parameters. Different characteristics of the oxide film layer to meet the needs of different purposes; it is also possible to change or adjust the composition of the electrolyte to make the film have a certain characteristic or present different colors; it is also possible to use different electrolytes to perform multiple microscopy on the same workpiece. Arc oxidation treatment to obtain a ceramic oxide film with multiple different properties.
The ceramic film on the surface of magnesium-based parts after micro-arc oxidation treatment has high hardness (HV 300-1000), strong corrosion resistance (CASS salt spray test>480h), good insulation (film resistance>100MΩ), film layer and substrate The metal bonding force is strong, and the ceramic thickness is about 10 microns, which greatly improves the wear resistance, corrosion resistance, thermal shock resistance and insulation properties of the magnesium alloy surface. Moreover, the ceramic layer on the surface is relatively dense, the porosity is extremely low, and it has high corrosion resistance. The salt spray corrosion performance is increased by 5-10 times, which comprehensively solves the problem of practical applications and provides technical support for the development and application of magnesium alloys. .
Micro-arc oxidation technology is a green and environmentally-friendly emerging surface treatment technology. Mainly used for surface treatment of light metals such as aluminum, magnesium, titanium and their alloys. This method can effectively grow a uniform ceramic film on the surface of the base material.
The outstanding characteristics of micro-arc oxidation technology are: (1) greatly improve the surface hardness of the material, microhardness of 1000 to 2000HV, up to 3000HV, comparable to cemented carbide, much more than the hardness of high carbon steel, high alloy steel and high-speed tool steel after heat treatment; (2) Good wear resistance; (3) Good heat resistance and corrosion resistance. This fundamentally overcomes the shortcomings of aluminum, magnesium and titanium alloy materials in application, so the technology has broad application prospects; (4) Has good insulation performance, insulation resistance up to 100MΩ. (5) The solution is environmentally friendly and meets the emission requirements of environmental protection. (6) The process is stable and reliable, and the equipment is simple. (7) The reaction is carried out at room temperature, easy to operate and easy to master. (8) The matrix grew ceramic film in situ, the bond was firm, and the ceramic film was compact and uniform.
Micro arc oxidation surface treatment of magnesium alloy
Micro-arc oxidation technology is a green and environmentally-friendly emerging surface treatment technology. Mainly used for surface treatment of light metals such as aluminum, magnesium, titanium and their alloys. This method can effectively grow a uniform ceramic film on the surface of the base material.
| Material | Magnesium alloy |
| Type | AZ31,AZ91,AZ80,WE43,ZK60,AM60 |
| Color | Ceramic white, black, army green, brown |
| Film thickness | About 10um,Different thicknesses can be processed according to product requirements. |
| Application | Aerospace, military industry, rail transit, electronic products, biomedical products, bicycles, architectural decoration, etc. |
Magnesium alloy micro-arc oxidation surface treatment is a new technology for in-situ growth of oxide ceramics on the surface of non-ferrous metals. The use of micro-arc oxidation technology for surface ceramization of magnesium and its alloy materials has the advantages of simple process, small footprint, strong process capacity, high production efficiency, and suitable for batch industrial production.
Magnesium alloy micro-arc oxidation electrolyte does not contain toxic substances and heavy metal elements, and the electrolyte (environmental protection type) has strong anti-pollution ability and high regeneration and reuse rate, so it has little environmental pollution and meets the needs of environmental protection and clean production; it can be obtained by changing the process parameters. Different characteristics of the oxide film layer to meet the needs of different purposes; it is also possible to change or adjust the composition of the electrolyte to make the film have a certain characteristic or present different colors; it is also possible to use different electrolytes to perform multiple microscopy on the same workpiece. Arc oxidation treatment to obtain a ceramic oxide film with multiple different properties.
The ceramic film on the surface of magnesium-based parts after micro-arc oxidation treatment has high hardness (HV 300-1000), strong corrosion resistance (CASS salt spray test>480h), good insulation (film resistance>100MΩ), film layer and substrate The metal bonding force is strong, and the ceramic thickness is about 10 microns, which greatly improves the wear resistance, corrosion resistance, thermal shock resistance and insulation properties of the magnesium alloy surface. Moreover, the ceramic layer on the surface is relatively dense, the porosity is extremely low, and it has high corrosion resistance. The salt spray corrosion performance is increased by 5-10 times, which comprehensively solves the problem of practical applications and provides technical support for the development and application of magnesium alloys. .
Micro-arc oxidation technology is a green and environmentally-friendly emerging surface treatment technology. Mainly used for surface treatment of light metals such as aluminum, magnesium, titanium and their alloys. This method can effectively grow a uniform ceramic film on the surface of the base material.
The outstanding characteristics of micro-arc oxidation technology are: (1) greatly improve the surface hardness of the material, microhardness of 1000 to 2000HV, up to 3000HV, comparable to cemented carbide, much more than the hardness of high carbon steel, high alloy steel and high-speed tool steel after heat treatment; (2) Good wear resistance; (3) Good heat resistance and corrosion resistance. This fundamentally overcomes the shortcomings of aluminum, magnesium and titanium alloy materials in application, so the technology has broad application prospects; (4) Has good insulation performance, insulation resistance up to 100MΩ. (5) The solution is environmentally friendly and meets the emission requirements of environmental protection. (6) The process is stable and reliable, and the equipment is simple. (7) The reaction is carried out at room temperature, easy to operate and easy to master. (8) The matrix grew ceramic film in situ, the bond was firm, and the ceramic film was compact and uniform.
