Corrosion resistance

Corrosion resistance refers to the resistance of a material to destruction by corrosion. Corrosion is a natural process in which metals and other materials are broken down by reactions with their environment, such as oxygen, moisture, chemicals or salts.

Importance of corrosion resistance in mechanical engineering

Corrosion resistance is a critical factor in mechanical engineering, as corroded components can lose their structural integrity and fail. High corrosion resistance extends the service life of machines and systems, reduces maintenance costs and prevents unexpected failures.

Material selection based on corrosion resistance

The selection of corrosion-resistant materials is crucial, especially in demanding environments such as the offshore industry, chemical processing, food processing and medical technology. Typical materials with high corrosion resistance are stainless steel, aluminum alloys, titanium and special corrosion-resistant plastics.

Methods for improving corrosion resistance

There are several approaches to improving the corrosion resistance of materials:

1. Coatings: Application of protective coatings such as paints, electroplating or powder coatings.
2. Alloys: Use alloys with increased proportions of corrosion-resistant elements such as chromium, nickel or molybdenum.
3. Cathodic protection: Use of sacrificial anodes or application of an electrical voltage to prevent corrosion.

Factors influencing corrosion resistance

The corrosion resistance of a material is influenced by several factors, including the chemical composition, environmental conditions (e.g. humidity, temperature, pH value) and mechanical loads. These factors must be carefully considered when planning and selecting materials.

Practical applications and importance in the industry

Corrosion-resistant materials are widely used in various industries, including:

• Offshore industry: protection from the salty marine environment.
• Chemical industry: Resistance to aggressive chemicals.
• Building industry: Durability in humid and changing climatic conditions.
• Medical technology: biocompatibility and sterility.