Pattern of the B4C Ceramics Surface Deformation at Local Loading

Article Preview

Abstract:

Formation of cracks in the lateral indentation of brittle ceramic materials is described in several researches [1, 2]. Occurrence of such cracks and the associated side small cracks formed at the surface of the sample in the form of "petals" was observed and analyzed in this research on the samples of boron carbide ceramics and monocrystalline silicon. The experimental results for the determination of the sequence, the direction and nature of crack propagation, the size and shape of areas of spall fracture surface formed at indentation of monocrystalline silicon and polycrystalline boron carbide samples by scanning electron microscopy are presented. A comparison of the experimental results with the modeling results of indentation zone deformation, as well as analytical evaluation of the shapes and the maximum size of the spall fracture zones have been carried out, which showed good coincidence.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

60-64

Citation:

Online since:

December 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] B.R. Lawn, B.J. Hockey, H. Richter, Indentation analysis: applications in the strength and wear of brittle materials, Journal of Microscopy, 130 Pt 3 (1983) 295–308.

DOI: 10.1111/j.1365-2818.1983.tb04550.x

Google Scholar

[2] Akio Yonezu, Baoxing Xu, Xi Chen, Indentation induced lateral crack in ceramics with surface hardening, Materials Science and Engineering, A. 507 (2009) 226–235.

DOI: 10.1016/j.msea.2008.12.001

Google Scholar

[3] O.L. Khasanov, В.К. Strutz, E.S. Dviiis and othe., Spallation destruction of surfaces of ceramics at indentation, Russian Physics Journal, №5/2 (2012) 276–282.

Google Scholar

[4] E.M. Morosov, M.V. Zernin, Contact problems of fracture mechanics. – М.: Mashinostroenie, (1999).

Google Scholar

[5] N. N. Belov, Yu. A. Biryukov, A. T. Roslyak, et al., Chipping mechanism of particles upon receipt of submicron powders of high-melting compounds in air circulations machine, Doklady Akademii Nauk (Reports of the Academy of Sciences). 397 (2004).

Google Scholar

[6] D.B. Marshall, B. R Lawn, A.G. Evans, Elastic/Plastic Indentation Damage in Ceramics: The Lateral Crack System, Journal American Ceramics Society. 65 №11 (1982) 561–566.

DOI: 10.1111/j.1151-2916.1982.tb10782.x

Google Scholar