Berteau Corrosion

What is corrosion?

• The release of oxygen
• Breakdown of a metal

Iron rust in the presence of:

• Vacuum
• Moisture
• Oxygen
• Moisture and Oxygen

To protect iron against corrosion, we may galvanize it, making the iron covered in what?

• Zinc plating
• Nickel plating

Which of the following is / are examples of sacrificial protection against rusting?

(1) Iron object coated with tin

(2) Your Hot Water Tank having a magnesium rod inserted inside

(3) Iron railings coated with paint

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

Galvanizing is a process of:

• Applying a Zinc coating to bare steel

• Washing the body with the phosphate coating

• dipping a body in E-COAT

• Chemically etching primer to steel

Which of the following metals is very unreactive and unlikely to corrode. 

• Copper
• Gold
• sodium
• Potassium

What causes galvanic corrosion?

• Two dissimilar metals coming into contact in an electrolyte

• The degradation of materials by acids

• Two similar metals coming into contact

• The reduction of oxygen in water

How can corrosion be prevented?

• Using unprotected materials

• Regular monitoring and inspection

• Increasing exposure to environmental factors

• Avoiding design modifications

Tags

NGSS.MS-ETS1-1

What are the economic implications of corrosion?

• Reduced safety risks

• No impact on infrastructure

• Increased profits for businesses

• Significant financial losses

Tags

NGSS.HS-ETS1-3

What can corrosion cause in concrete structures?

• Increased durability

• Steel reinforcements to fail

• Decreased corrosion rates

• Improved structural integrity