---
title: Sacrificial Anode | one to ONE Holdings
description: A sacrificial anode is a key to cathodic protection. Learn how this reactive metal corrodes to prevent rust and extend the lifespan of vital infrastructure
image: https://www.o2oh.com/hubfs/o2Oh_18mm.jpg
---

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# Glossary

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# Sacrificial Anode

A sacrificial anode is a key component of a corrosion prevention technique known as cathodic protection.

It is a block of a highly reactive metal, like zinc, aluminum, or magnesium that is intentionally attached to the metal structure you want to protect. The principle is based on galvanic corrosion: the sacrificial anode corrodes preferentially, essentially "sacrificing" itself by donating electrons. This protects the main structure from rusting or other forms of deterioration. It is an essential and widely used method for extending the lifespan of vital infrastructure like pipelines, ship hulls, and offshore platforms.

### RELATED WORDS

---

- [SBTN (Science Based Targets Network)](https://www.o2oh.com/glossary/sbtn-science-based-targets-network)
- [SBTi (Science Based Targets initiative)](https://www.o2oh.com/glossary/sbti-science-based-targets-initiative)
- [SBTs (Science-Based Targets)](https://www.o2oh.com/glossary/sbts-science-based-targets)
- [Supply Chain Resilience](https://www.o2oh.com/glossary/supply-chain-resilience)
- [Supply Chains](https://www.o2oh.com/glossary/supply-chains)
- [System Boundary](https://www.o2oh.com/glossary/system-boundary)
- [Scaffolding](https://www.o2oh.com/glossary/scaffolding)
- [Servitization](https://www.o2oh.com/glossary/servitization)
- [SASB](https://www.o2oh.com/glossary/sasb)
- [Sustainability Report](https://www.o2oh.com/glossary/sustainability-report)
- [Steelmaking](https://www.o2oh.com/glossary/steelmaking)
- [Steel](https://www.o2oh.com/glossary/steel)
- [Scenario Planning](https://www.o2oh.com/glossary/scenario-planning)
- [Scope 3](https://www.o2oh.com/glossary/scope-3)
- [Scope 2](https://www.o2oh.com/glossary/scope-2)
- [Scope 1](https://www.o2oh.com/glossary/scope-1)

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