Sacrificial Anode Cathodic Protection Allied Corrosion || Galvanic Anode

Summary

In this video, Wahyu from Samudra Dharma Kalingga, a distributor of zinc and aluminum products, discusses corrosion prevention in steel plates, commonly used in ships and underwater pipelines. He explains two methods: Impressed Current Protection (ICP) and the sacrificial anode system. The focus is on using zinc or aluminum anodes, which sacrifice themselves to prevent steel corrosion. Wahyu demonstrates this with a saltwater experiment, showing how a steel pipe with a zinc anode remains protected, while an unprotected pipe corrodes. For more information, viewers are directed to the company's website and social media.

Takeaways

• 👋 Introduction by Wahyu from Samudra Dharma Kalingga, a distributor of zinc and aluminum, including BMW's vectoren Wilson.
• 🚢 Focus of the video: preventing corrosion on steel plates often used in ships or underwater pipelines.
• ⚙️ Two main corrosion prevention systems: Impressed Current Protection (ICP) and Sacrificial Anode System.
• 💸 ICP is rarely used for ship plates due to high costs and system complexity.
• ⚡ Explanation of the Sacrificial Anode method, using zinc or aluminum as sacrificial metals to protect steel plates from corrosion.
• 🧲 Zinc or aluminum (sacrificial anode) corrodes instead of the steel, thus extending the steel's lifespan.
• 🌊 Demonstration using an aquarium with seawater and two steel pipes—one protected with a zinc anode and one without protection.
• 👀 Visual results: the protected pipe with the zinc anode shows no corrosion, while the unprotected pipe starts corroding.
• 🔧 Zinc anode corrodes, showing signs of wear, but the steel remains protected.
• 🌐 Conclusion with a call to visit their website and social media channels for more information.

Q & A

Who is the speaker in the video?

The speaker is Wahyu from Samudra Dharma Kalingga, a distributor of zinc and aluminium under the BMW brand, also known as Vectoren Wilson.

What issue is being addressed in the video?

The issue being addressed is the prevention of corrosion on steel plates, especially those used on ships and underwater pipes, which are prone to rust and require maintenance.

What are the two methods of corrosion prevention mentioned in the video?

The two methods mentioned are the ICCP (Impressed Current Cathodic Protection) system and the sacrificial anode system.

Why is the ICCP system rarely used on ship plates?

The ICCP system is rarely used on ship plates because it is expensive and the system is complex.

What is the sacrificial anode system?

The sacrificial anode system is a corrosion prevention method where zinc or aluminium is used as the anode, sacrificing itself to prevent the steel plate from corroding.

Why are zinc and aluminium used in the sacrificial anode system?

Zinc and aluminium are used because they corrode first, protecting the steel plate by acting as sacrificial anodes.

What demonstration is shown in the video?

The demonstration involves two steel pipes submerged in seawater, one with a zinc anode for protection and the other without any protection, to show the difference in corrosion.

What was the result of the demonstration in the video?

The steel pipe with the zinc anode showed no corrosion, while the unprotected pipe began to corrode, indicated by a brownish color.

What happens to the zinc anode over time in the sacrificial anode system?

The zinc anode corrodes over time, protecting the steel plate. After around 30 days, signs of corrosion and a change in color to orange or 'scaling' can be seen on the zinc anode.

Where can viewers find more information about the sacrificial anode system?

Viewers can visit the Samudra Dharma Kalingga website at www.oto.com or follow them on social media, including Instagram and their YouTube channel.