/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 33 Define the term alloy. Distingui... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 23: Problem 33

Define the term alloy. Distinguish among solution alloys, heterogeneous alloys, and intermetallic compounds.

Short Answer

Expert verified
In short, an alloy is a mixture or metallic solid solution composed of two or more elements, combined to attain specific properties. Solution alloys are homogeneous mixtures forming a single solid phase where atoms are uniformly distributed within the crystal lattice (e.g., brass). Heterogeneous alloys are mixtures of multiple phases with distinct regions and varying composition (e.g., reinforced concrete). Intermetallic compounds are new compounds formed by the interaction of metals, having a fixed ratio of elements, and exhibiting unique properties (e.g., NiAl).

Step by step solution

01

Defining Alloy

An alloy is a mixture or metallic solid solution composed of two or more elements. It usually has different properties from those of the individual constituents. The elements are combined to achieve specific properties, such as increased strength, corrosion resistance, or electrical conductivity.
02

Defining Solution Alloys

Solution alloys are homogeneous mixtures of two or more elements that form a single solid phase. In these alloys, the atoms of different elements are uniformly distributed within the crystal lattice. The most common type of solution alloy is a substitutional alloy, where atoms of one element, usually the smaller one, are replaced by atoms of similar size but different properties. An example of a solution alloy is brass, which is composed of copper and zinc.
03

Defining Heterogeneous Alloys

Heterogeneous alloys are mixtures of multiple phases, meaning that the elements do not form a single solid solution, and the composition varies within the material. These alloys have distinct regions with different properties. This may occur when certain elements are not soluble in each other and cannot be incorporated into a single crystal lattice or when the alloys have undergone additional processing, like heat treatment or rapid cooling. An example of a heterogeneous alloy is a composite material, like reinforced concrete, which contains cement, steel, and aggregate.
04

Defining Intermetallic Compounds

Intermetallic compounds are formed by the interaction of two or more metals, resulting in the formation of a new compound with different properties. These compounds have a well-defined crystal structure and stoichiometric composition, meaning that they have a fixed ratio of elements. Unlike solution alloys and heterogeneous alloys, intermetallic compounds have a more rigid structure and often exhibit unique properties, such as high melting points, good electrical and thermal conductivity, and corrosion resistance. An example of an intermetallic compound is the nickel-aluminum compound, NiAl, which is used in high-temperature applications.
05

Recap and Summary

In summary, an alloy is a mixture or metallic solid solution composed of two or more elements. Solution alloys are single-phase materials with uniformly distributed atoms, while heterogeneous alloys are mixtures of multiple phases and distinct regions. Intermetallic compounds, on the other hand, are new compounds that result from the interaction of two or more metals and have well-defined stoichiometry and crystal structure.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The electrical conductivity of titanium is approximately 2500 times greater than that of silicon. Titanium has a hexagonal close-packed structure, and silicon has the diamond structure. Explain how the structures relate to the relative electrical conductivities of the elements.

Tin exists in two allotropic forms: Gray tin has a diamond structure, and white tin has a close-packed structure. One of these allotropic forms is a semiconductor with a small band gap while the other is a metal. Which one is which? Which form would you expect to have the longer Sn -Sn bond distance?

The reduction of metal oxides is often accomplished using carbon monoxide as a reducing agent. Carbon (coke) and carbon dioxide are usually present, leading to the following reaction: $$ \mathrm{C}(\mathrm{s})+\mathrm{CO}_{2}(g) \rightleftharpoons 2 \mathrm{CO}(g) $$ Using data from Appendix \(C\), calculate the equilibrium constant for this reaction at \(298 \mathrm{~K}\) and at \(2000 \mathrm{~K}\), assuming that the enthalpies and entropies of formation do not depend upon temperature.

Magnesium is obtained by electrolysis of molten \(\mathrm{MgCl}_{2}\). (a) Why isn't an aqueous solution of \(\mathrm{MgCl}_{2}\) used in the electrolysis? (b) Several cells are connected in parallel by very large copper buses that convey current to the cells. Assuming that the cells are \(96 \%\) efficient in producing the desired products in electrolysis, what mass of \(\mathrm{Mg}\) is formed by passing a current of \(97,000 \mathrm{~A}\) for a period of \(24 \mathrm{hr}\)?

Associated with every antiferromagnetic solid is a temperature known as its N茅el temperature. When heated above its N茅el temperature the magnetic behavior changes from antiferromagnetic to paramagnetic. In contrast diamagnetic substances do not generally become paramagnetic upon heating. How do you explain this difference in behavior?
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Reactions

Read Explanation

Inorganic Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Kinetics

Read Explanation

Making Measurements

Read Explanation

Nuclear Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.