Experimental observations of amorphization in multiple generations of boron carbide Academic Article

abstract

• AbstractBoron carbide is an excellent armor material due to its light weight and ultrahigh hardness. However, highrate mechanical behavior can be degraded by stressinduced amorphization. In this paper, we review the progressive advances in the understanding of amorphization in three successive generations of boron carbide: stoichiometric (undoped), Brich, and B/Si codoped boron carbides. For each generation of boron carbide, the crystal structure and microstructure are first discussed. Then, we outline the experimental observations of amorphization made by Raman spectroscopy and transmission electron microscopy. The susceptibility of amorphization in each generation of boron carbide will be compared and the fundamental mechanisms that explain the reduction in amorphization for Brich and B/Si codoped boron carbides elucidated. Comments on future research directions to further broaden and deepen the understanding of stressinduced amorphization of boron carbide are also provided.

authors

• Xie, Yu Kelvin

published proceedings

• JOURNAL OF THE AMERICAN CERAMIC SOCIETY

author list (cited authors)

• Xie, K. Y., Yang, Q., Marvel, C. J., He, M., LaSalvia, J. C., Harmer, M. P., ... Hemker, K. J.

citation count

• 6

publication date

• May 2022

publisher

• Wiley  Publisher

published in

• Journal of The American Ceramic Society  Journal

keywords

• Amorphization
• Boron Carbide
• Doping
• Raman Spectroscopy
• Transmission Electron Microscopy

Digital Object Identifier (DOI)

• 10.1111/jace.18058

start page

• 3008

end page

• 3029

volume

• 105

issue

• 5

URL

• http://dx.doi.org/10.1111/jace.18058