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Questions and Answers
What type of solid solution is formed when nickel dissolves in copper?
What type of solid solution is formed when nickel dissolves in copper?
- Substitutional solid solution (correct)
- Alloy solid solution
- Liquid-solid solution
- Interstitial solid solution
Which factor is crucial for the formation of a substitutional solid solution?
Which factor is crucial for the formation of a substitutional solid solution?
- Atoms must differ greatly in size
- Atoms must be of similar size (correct)
- Atoms must have the same crystalline structure
- Atoms must have identical atomic weight
What defines the relationship between the two metals in a complete miscibility scenario?
What defines the relationship between the two metals in a complete miscibility scenario?
- They must have a high melting point difference
- They must be quite similar as defined by the Hume-Rothery rules (correct)
- They must be identical in all aspects
- They must be completely different in properties
In the given solid solution, which atom acts as the solute?
In the given solid solution, which atom acts as the solute?
What type of crystal structure is shared by copper and nickel in the solid solution?
What type of crystal structure is shared by copper and nickel in the solid solution?
Study Notes
Solid Solution of Copper and Nickel
- Copper and nickel atoms form a solid solution where nickel dissolves in copper.
- Both metals share the face-centered cubic (fcc) crystal structure.
- Nickel atoms replace copper atoms in the fcc lattice, creating a substitutional solid solution.
- This occurs because the atomic sizes of copper and nickel are similar.
Hume-Rothery Rules
- The Hume-Rothery rules explain the conditions for complete miscibility in metallic solid solutions.
- These rules state that for complete miscibility, the two metals must be similar in:
- Atomic size
- Crystal structure
- Valence (number of electrons in the outermost shell)
- Electronegativity (ability to attract electrons)
- The water-alcohol system is an example of two liquids completely miscible in all proportions.
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Description
This quiz explores the solid solution of copper and nickel, focusing on their atomic structures and the formation of a substitutional solid solution. It also covers the Hume-Rothery rules, which outline the conditions necessary for complete miscibility of metallic solid solutions. Test your knowledge on these important concepts in metallurgy!
