Cadmium and zinc coatings provide which of...

Question 1 / 205eccef9fbacbc34ba4d46bda

Question 1 of 205eccef9fbacbc34ba4d46bda

Cadmium and zinc coatings provide which of the following type of protection for the base metal?

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Question 1 of 20

5eccef9fbacbc34ba4d46bda

Cadmium and zinc coatings provide which of the following type of protection for the base metal?

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🔍 Key Concepts

• Galvanic (cathodic) protection between dissimilar metals • The role of coatings like zinc and cadmium on steel in a corrosive (saltwater) environment • How a more active (anodic) metal protects a less active metal

💭 Think About

• Think about what happens in a saltwater environment when two different metals are in electrical contact. Which one corrodes first, and how does that affect the other metal? • Why are zinc anodes commonly bolted to hulls, rudders, and shafts on ships? What kind of protection does that provide to the steel? • Which answer choice best describes a coating that is intentionally allowed to corrode so the underlying metal does not?

✅ Before You Answer

• Verify which type of protection involves a more reactive metal corroding first to protect the base metal. • Eliminate options that describe heat resistance or surface sealing rather than controlled corrosion. • Confirm that cadmium and zinc are used in marine practice as anodes for corrosion protection, not primarily as a barrier sealant.

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Question 1 of 20

Cadmium and zinc coatings provide which of the following type of protection for the base metal?

Sacrificial.

Sealant.

Thermal.

Chemical.

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Question 1 / 205eccef9fbacbc34ba4d46bda

Question 1 of 205eccef9fbacbc34ba4d46bda

Cadmium and zinc coatings provide which of the following type of protection for the base metal?

Back

Question 1 of 20

5eccef9fbacbc34ba4d46bda

Cadmium and zinc coatings provide which of the following type of protection for the base metal?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed