DTIC AD0691019: SURFACE ENERGY OF CERAMIC MATERIALS | |
by Defense Technical Information Center | |
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The concepts, experimental techniques, and theoretical | |
analyses of the surface energy of solid ceramic materials | |
are reviewed with the aim of condensing a large mass of | |
unrelated data into a concise form for comparison and | |
evaluation. It is shown that various experimental methods | |
can be applied to the measurement of surface energy, but, | |
that each of these has certain limitations which are | |
often unstated. Furthermore, it is shown that theoretical | |
analyses and empirical correlations, while sometimes | |
rather imprecise, can be used to approximate surface | |
energies, particularly as functions of temperature. While | |
a few materials have been discussed in considerable | |
detail (such as MgO, Al2O3 and some alkali halides), a | |
review of the literature notes that there is a great | |
paucity of information on the surface energies of many | |
solids of interest. Improvements and extensions of | |
experimental and empirical techniques are suggested that | |
will help to fill the voids in the present understanding | |
of ceramic solid surfaces, and specific analyses of | |
experimental methods are forwarded. It is shown in the | |
report that the proper use of thermodynamic techniques | |
offers considerable potential for the measurement and | |
interpretation of solid surface energies of a large | |
number of materials that are poorly understood at | |
present. In addition, the further development of | |
thermodynamic methods presents an opportunity to | |
investigate solid surface energies of nonbrittle | |
materials, thus overcoming one of the basic limitations | |
of the use of mechanical methods. | |
Date Published: 2019-01-12 09:55:38 | |
Identifier: DTIC_AD0691019 | |
Item Size: 113695917 | |
Language: english | |
Media Type: texts | |
# Topics | |
DTIC Archive; Duga, Jules J ; BATTELL... | |
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