Chapter 13 Outline
Applications and Processing of Ceramics
Most ceramic materials fall into an application-classification scheme that includes the following
groups: glasses, structural clay products, whitewares, refractories, abrasives, cements, carbons,
Chapter 4 Point defects and dislocations
Lattice impurities and vacancies
A point defect in a crystal is (i) the occupancy of a lattice sites by impurity
atoms/ions or a voids (i.e. vacancy); or (ii) extra atoms/ions not in regular lattice
12.5 On the basis of ionic charge and ionic radii given in Table 12.3, predict crystal structures for the
(c) KI, and
Justify your selections.
This problem calls for us to predict crystal structures
Assignment 2 solutions
3.23 List the point coordinates of the titanium, barium, and oxygen ions for a unit cell of the perovskite
crystal structure (Figure 12.6).
In Figure 12.6, the barium ions are situated at all corner posit
The Structure of solids.
After having studied this chapter, the student will be able to:
1. Distinguish between a crystal structure and an amorphous structure.
2. Describe the concept of a unit cell.
3. Describe the FCC, BCC and HCP structures.
Chapter 2 Outline
Atomic Structure and Interatomic Bonding
2.2 Fundamental Concepts
Each chemical element is characterized by the number of protons in the nucleus, or the
atomic number (Z).
The atomic mass (A) of an atom is expressed as
Chapter 3 Outline
The Structure of Crystalline Solids
3.2 Fundamental Concepts
A crystalline material is one in which the atoms are situated in a repeating or periodic
array over large atomic distances
o Long range order exists; they wi
Chapter 4 Outline
Imperfections in Solids
4.2 Vacancies and Self- Interstitials
A crystalline defect refers to a lattice irregularity having one or more of its dimensions on the
order of an atomic diameter
The simplest point defect is a vaca