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Solid Solutions in Materials Science

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Questions and Answers

What characterizes the substitutional solid solution of copper and nickel?

Nickel atoms dissolve in water.

Nickel atoms replace copper atoms in the crystal lattice. (correct)

Copper atoms replace nickel atoms in the solution.

Nickel and copper form a new compound rather than a solution.

Which factor is essential for the formation of a substitutional solid solution?

The atoms must be quite similar in size. (correct)

The metals must have completely different melting points.

The atoms must be of different weights.

The metals must have different crystal structures.

What is the result of the complete miscibility in the water-alcohol system?

The two liquids separate when combined.

One of the liquids acts as a solute while the other is a solvent.

The two substances form a solid solution.

The two liquids are soluble in each other in all proportions. (correct)

Which of the following statements about the Hume-Rothery rules is true?

<p>They define the necessary conditions for complete miscibility in metallic solid solutions.</p> Signup and view all the answers

What constitutes the primary function of nickel in the copper-nickel solid solution?

<p>Nickel serves as the solute dissolving in copper.</p> Signup and view all the answers

Study Notes

Solid Solutions

Copper and nickel atoms can form a solid solution, where nickel acts as a solute dissolved in copper, the solvent.
In this specific configuration, nickel atoms replace copper atoms in the face-centered cubic (fcc) crystal structure.
This is classified as a substitutional solid solution, as one atom type replaces another in the crystal lattice.
This solid solution is possible because the copper and nickel atoms have similar sizes.
The Hume-Rothery rules dictate that for complete miscibility in metallic solid solutions, the metals need to be very similar in characteristics.
This is exemplified by the water-alcohol system, where both liquids are completely soluble in each other in all proportions.

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Description

Explore the fascinating world of solid solutions, specifically focusing on the substitutional solid solution of copper and nickel. Learn about the atomic interactions, crystal structures, and the Hume-Rothery rules that govern miscibility in metals. This quiz will deepen your understanding of how different metals can combine at the atomic level.