Materials Science and Engineering: An Introduction

William D. Callister, Jr. David G. Rethwisch

ISBN #9780471736967

7th Edition

771 Questions

65,043 Students Helped

Homework Questions

Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

None

Learning Objectives

Key Concepts

CONCEPT

DEFINITION

Ceramics Fabrication Techniques

The methods and processes used for shaping, forming, and consolidating ceramic materials into final products with desired properties.

Example Problems

Example 1

(a) Cite the difference between atomic mass and atomic weight.

Example 2

Silicon has three naturally-occurring isotopes: $92.23 \%$ of $^{28} \mathrm{Si}$, with an atomic weight of 27.9769 amu, $4.68 \%$ of $^{29} \mathrm{Si}$, with an atomic weight of 28.9765 amu, and $3.09 \%$ of $^{30} \mathrm{Si}$ with an atomic weight of 29.9738 amu. On the basis of these data, confirm that the average atomic weight of $\mathrm{Si}$ is 28.0854 amu.

Example 3

(a) How many grams are there in one amu of a material? (b) Mole, in the context of this book, is taken in units of gram-mole. On this basis, how many atoms are there in a pound-mole of a substance?

Example 4

(a) Cite two important quantum-mechanical concepts associated with the Bohr model of the atom. (b) Cite two important additional refinements that resulted from the wave-mechanical atomic model.

Example 5

Relative to electrons and electron states what does each of the four quantum numbers specify?