Question

Which of the following factors that affect the corrosion of composites?

(a) The corrosive specificity of an environment

(b) Galvanic effect

(c) Corrosive specificity of an environment and galvanic effect

(d) Neither the corrosive specificity of an environment nor the galvanic effect

I have been asked this question in exam.

I'd like to ask this question from Materials topic in chapter Materials of Corrosion Engineering

Answer 1

The correct answer is:

(c) Corrosive specificity of an environment and galvanic effect

Explanation:

Corrosion of composites can be influenced by multiple factors, including:

1. Corrosive specificity of an environment: Different environments have varying levels of corrosiveness depending on factors like humidity, temperature, pH, and the presence of salts or acids. Composites may be more or less susceptible to corrosion depending on the specific environmental conditions they are exposed to.

2. Galvanic effect: When different metals or conductive materials are present in a composite, they can interact electrochemically, leading to a galvanic corrosion effect. This occurs when a more noble material (less likely to corrode) and a more active material (more likely to corrode) are in contact, causing the active material to corrode faster.

Thus, both the corrosive environment and galvanic effects are important factors that can influence the corrosion behavior of composites, making option (c) the correct answer.