Sacrificial anodes or galvanic anodes are a must-have element for a cathodic protection system. In applications that have buried metallic structures, corrosion protection is a challenge. When an external power source is not a viable solution to protect the structure against corrosion then sacrificial anodes come to the rescue. The easy to oxidize anodes provide effective protection from corrosion challenges and can be availed in a variety of materials. In this post, we will discuss the choices available in sacrificial anodes and discuss what makes a magnesium sacrificial anode the best choice.
Why choose a sacrificial anode?
Sacrificial anodes are designed for active protection against rusting. The alloy used in these anodes has higher negative potential thus it becomes a simple yet effective solution. Besides, you don’t need an external power supply to activate the corrosion protection system. Additionally, control and monitoring are also pretty straightforward in sacrificial anodes.
What are the material choices available for sacrificial anodes?
The highly effective and easy to install galvanic anodes are available in wide varieties of alloys. Based on the application and the protection level required, one can pick from aluminum, zinc and magnesium alloy.
What makes magnesium anodes the best choice?
Since galvanic anodes are demanded due to their negative electrical potential, thereby magnesium alloy becomes the best choice. The higher negative electron ensures superior performance in freshwater applications and submerged pipelines.
- Cost effective
- Easy to install
- Suitable for a highly resistive environment
- Higher negative driving potential
- Suitable for steel structures
- Easy to monitor
- No external power supply needed
Magnesium is a great choice for corrosion protection systems that are installed in underground tanks. The negative potential of magnesium is the best option for pipelines and refineries. Although based on the resistivity factor, you may opt to choose from either zinc, aluminium or magnesium.
Final word
Galvanic anodes are highly appreciated for their low cost operation and maintenance free performance. If you are searching for premium quality magnesium sacrificial anode then request a quote from Hele Titanium. It is a recognized manufacturer and can fulfil your request for customized sacrificial anodes.
