Mo-B-C and Ta-B-C Nanostructured Layers with Promising Fracture Toughness

Abstract:

X-B-C (X=Mo, Ta) layers prepared by magnetron sputtering were tested. Mechanical properties were characterized by means of nanoindentation experiments in both the static and the dynamic loading regime. The results were correlated with observations of the microstructure under indentation prints by means of scanning and transmission electron microscopy on cross sections prepared using a focussed ion beam. An excellent fracture resistance of prepared nanostructured coatings was found.

• Periodical: Defect and Diffusion Forum (Volume 368)
• Pages: 107-110
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.368.107
• Online since: July 2016
• Authors: Jiří Buršík, Ivo Kuběna, Vilma Buršíková, Pavel Souček, Lukáš Zábranský, Petr Vašina
• Keywords: FIB, Fracture Toughness, Nanolaminate, SEM, TEM

References

[1] J. Musil, Hard nanocomposite coatings: Thermal stability, oxidation resistance and toughness, Surf. Coat. Technol. 207 (2012) 50-65.

DOI: 10.1016/j.surfcoat.2012.05.073

[2] J. Musil, Flexible hard nanocomposite coatings, RSC Adv. 5 (2015) 60482-60492.

DOI: 10.1039/c5ra09586g

[3] Nanostructured Thin Films and Nanodispersion Strengthened Coatings, NATO Science Series II. Vol. 155, Eds. A.A. Voevodin, D.V. Shtansky, E.A. Levashov and J.J. Moore, Kluwer Academic Sciences, Dordrecht, (2004).

DOI: 10.1007/1-4020-2222-0

[4] S. Zhang, D. Sun, Y. Fu and H. Du, Toughness measurement of thin films: a critical review, Surf. Coat. Technol. 198 (2005) 74-84.

[5] Standard Test for Plane Strain Fracture Toughness of Metallic Materials, ASTME-399, American Society for Testing and Materials, Philadelphia, PA, (1987).

[6] B. Bhushan, Mechanical Properties of Nanostructures, in: B. Bhushan (Ed. ), Nanotribology and Nanomechanics, An Introduction, Springer-Verlag, Berlin Heidelberg, 2005, pp.731-771.

DOI: 10.1007/3-540-28248-3_15

[7] J. Emmerlich, D. Music, M. Braun, P. Fayek, F. Munnik and J.M. Schneider, A proposal for an unusually stiff and moderately ductile hard coating material: Mo2BC, J. Phys. D: Appl. Phys. 42 (2009) 185406 (6pp).

DOI: 10.1088/0022-3727/42/18/185406

[8] H. Bolvardi, J. Emmerlich, S. Mráz, M. Arndt, H. Rudigier and J.M. Schneider, Low temperature synthesis of Mo2BC thin films, Thin Solid Films 542 (2013) 5-7.

DOI: 10.1016/j.tsf.2013.07.021

[9] D. Galvan, Y.T. Pei and J. Th.M. De Hosson, Deformation and failure mechanism of nano-composite coatings under nano-indentation, Surf. Coat. Technol. 200 (2006) 6718-6726.

DOI: 10.1016/j.surfcoat.2005.10.010

[10] D. Galvan, Y.T. Pei and J. Th.M. De Hosson, Nanostructured TiC/a-C coatings for low friction and wear resistant applications, Surf. Coat. Technol. 198 (2005) 44-50.

DOI: 10.1016/j.surfcoat.2004.10.106

[11] L. Zábranský, V. Buršíková, J. Daniel, P. Souček, P. Vašina, J. Dugáček, P. St'ahel, O. Caha, J. Buršík and V. Peřina, Comparative analysis of thermal stability of two different nc-TiC/a-C: H coatings, Surf. Coat. Technol. 267 (2015) 32-39.

DOI: 10.1016/j.surfcoat.2015.01.058

[12] V. Buršíková, J. Buršík, L. Zábranský, P. Vašina, P. Souček and V. Peřina, Study of the Nanoindentation Induced Defects in Nanocomposite n-TiC/a-C: H Films, Key Eng. Mat. 606 (2014) 159-162.

DOI: 10.4028/www.scientific.net/kem.606.159

[13] L. Zábranský, V. Buršíková, P. Souček, P. Vašina, T. Gardelka, P. St'ahel, O. Caha, V. Peřina and J. Buršík, Study of the thermal dependence of mechanical properties, chemical composition and structure of nanocomposite TiC/a-C: H coatings, Surf. Coat. Technol. 242 (2014).

DOI: 10.1016/j.surfcoat.2014.01.019

[14] L. Zábranský, V. Buršíková, J. Buršík, P. Vašina, P. Souček, O. Caha, M. Jílek and V. Peřina, Study of the Indentation Response of nanocomposite n-TiC/a-C: H coatings, Chem. Listy 106 (2012) S1508-S1511.

DOI: 10.1016/j.surfcoat.2014.01.019