NDLI: Microstructure and compressive properties of carbon microballoons

Content Provider	Springer Nature Link
Author	Carlisle, K. B. Koopman, M. Chawla, K. K. Kulkarni, R. Gladysz, G. M. Lewis, M.
Copyright Year	2006
Abstract	Carbon microballoons (CMBs) with tap densities of 0.143, 0.161, and 0.177 g/cm$^{3}$, as measured per ASTM B 527-93, were characterized in terms of individual balloon diameter, wall thickness, and mechanical behavior in compression through a novel uniaxial compression test technique. This compression test, performed on an MTS Nanoindenter XP II, utilized a flat-ended cylindrical tip rather than the common Berkovich indenter. Quantitative microscopy techniques were used to obtain diameter and wall thickness measurements on the polished cross-sections of individual CMBs that had been cold mounted in epoxy resin. Though there was significant overlap in the three populations, a trend toward increasing average wall thickness—from 1.32 to 2.16 μm—with increasing tap density was observed. Compressive property data including failure load, failure strain, fracture energy, and stiffness were obtained for individual microballoons. Comparison of these data, both inter- and intra-tap density, has yielded some viable trends. CMB failure strain exhibited a dependence upon the inverse square root of the CMB diameter, and CMB failure load depended linearly upon CMB stiffness. Averages for each tap density’s failure load, pseudo-stiffness, and fracture energy were also calculated and observed to increase with tap density.
Starting Page	3987
Ending Page	3997
Page Count	11
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	41
Issue Number	13
e-ISSN	15734803
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-06-07
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Materials Science Characterization and Evaluation Materials Mechanics Crystallography Continuum Mechanics and Mechanics of Materials
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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