| dc.description.abstract | In today’s materials science curriculum, there is often only time for one course on
ceramic materials. Students will usually take courses on mechanical properties,
thermodynamics and kinetics, and the structure of materials. Many will also have
taken an introductory overview of materials science. In each of these courses, the
students will have encountered ceramic materials. The present text assumes background
knowledge at this introductory level but still provides a review of such critical
topics as bonding, crystal structures, and lattice defects.
The text has been divided into seven parts and 37 chapters: we will explain the
thinking behind these decisions. Part I examines the history and development of
ceramic materials: how they have literally shaped civilization. We include this
material in our introductory lectures and then make the two chapters assigned
reading. Part II discusses the bonding, structure, and the relationship among
phases. Students often find this part of the course to be the most difficult
because structures are implicitly 3-dimensional. However, so many properties depend
on the structure whether crystalline or amorphous. We have limited the number
of structures to what we think the students can manage in one course, we give
references to texts that the students can spend a lifetime studying and recommend
our favorite software package. Part III consists of two chapters on our tools of
the trade. Most ceramics are heated at some stage during processing. Unfortunately
heat treatments are rarely exactly what we would like them to be; the heating rate
is too slow, the furnace contaminates the sample, the environment is not what
we want (or think it is), etc. Techniques for characterizing materials fill books
and the students are familiar with many already from their studies on metals. So,
the purpose of this chapter is, in part, to encourage the student to find out more
about techniques that they might not have heard of or might not have thought of
applying to ceramics; you could certainly skip Part III and make it assigned reading
especially if the students are taking overlapping courses. Part IV discusses defects
in ceramics and aims at providing a comprehensive overview while again not being
a dedicated book on the subject. Part IV leads straight into Part V—a basic discussion
of mechanical properties applied specifically to ceramics. The last two parts
contain just over half the chapters. The two topics are Processing (Part VI) and
Properties (Part VII) and are, of course, the reason we study ceramic materials. The
warning is—these topics form the second half of the book because the student should
understand the materials first, but it then becomes too easy to miss them in a onesemester
course due to lack of time. We know, we have done this and the students
miss the part that they would often appreciate most. Chapter 36 is probably the most
fun for half the students and both the authors; Chapter 37 is the most important for
all of us.
Many modern ceramists will acknowledge their debt to the late David Kingery.
His pioneering 1960 text was one of the first to regard ceramics as a serious scientific
subject. Both his book and his research papers have been referenced throughout the
present text. Our definition of a ceramic material follows directly from Kingery’s
definition: a nonmetallic, inorganic solid. Nonmetallic refers to the bonding: in
ceramics, it is predominantly covalent and/or ionic. Ceramics are always inorganic
solids although they also may be major or minor components of composite materials. | en_US |
