Title

Strain-induced formation of carbon and boron clusters in boron carbide during dynamic indentation

Authors

Dipankar Ghosh, University of Florida
Ghatu Subhash, University of Florida
Chee Huei Lee, Michigan Technological University
Yoke Khin Yap, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

8-7-2007

Abstract

The authors found that the level of amorphization or structural disorder in boron carbide is higher when induced by dynamic indentation compared to static indentation. Visible and uv Raman spectroscopies indicate that sp²-bonded aromatic carbon clusters were formed, consistent with the detected photoluminescence spectra. Infrared absorption shows that amorphous boron clusters were created by dynamic indentation which has strain rates ∼10⁸ order higher than that introduced by static indentation. The decreased intensity of infrared stretching mode of carbon-boron-carbon (CBC) chains also suggests that amorphization is due to the collapse of B₁₁C(CBC) unit cells, which reorganize into the energetically favorite carbon and boron clusters.

Publisher's Statement

© 2007 American Institute of Physics. Publisher’s version of record: https://doi.org/10.1063/1.2768316

Publication Title

Applied Physics Letters

Recommended Citation

Ghosh, D., Subhash, G., Lee, C. H., & Yap, Y. K. (2007). Strain-induced formation of carbon and boron clusters in boron carbide during dynamic indentation. Applied Physics Letters, 91(6), 061910-1-061910-3. http://doi.org/10.1063/1.2768316
Retrieved from: https://digitalcommons.mtu.edu/physics-fp/303

Version

Publisher's PDF