中华少年朗诵配乐背景.ppt

Prelims- 6/13/07 9:22 AM Page vii
Preface
When I was approached by Elsevier to put together a book on phase diagram deter-
mination, I immediately responded with a positive answer and a book plan. Such a
book, in my opinion, is long overdue. There have been several books in recent years
on thermodynamic calculations of phase diagrams using the CALculation of PHAse
Diagrams (CALPHAD) approach, but only a thin conference proceedings volume
on Experimental Methods of Phase Diagram Determination edited by . Morral,
. Schiffman, and . Merchant and published by the Minerals, Metals and
Materials Society (TMS) in 1994. This new book will help offset such imbalance,
and emphasize the importance of experimental determination of phase diagrams.
Since the Gibbs energy functions in CALPHAD assessments are optimized from
experimental phase diagrams and a few thermodynamic measurements (when
available), accurate experimental phase diagrams are essential for reliable CALPHAD
modeling that is one of the foundations putational design of ponent
materials.
Phase diagram determination is both a scientific study and an art in a certain sense,
because experience and good practice can play an important role in the quality of
the results. The feeling that the “art” part is gradually fading away has been bothering
me for quite some time. Hopefully,this book will archive some of the art.
Another important consideration in putting this book together is the need for
prehensive reference book on the subject, which surprisingly did not exist.
I was very encouraged by the ments from anonymous reviewers on the
book plan. ments include words such as “As for the subject matter of the
proposed book, indeed it is high time to have an up-to-date book on that subject,
which is very central to MSE [materials science and engineering]”. An effort has
been made in creating this reference book to allow researchers to quickly find vari-