Institute of Physics of Materials AS CR, v. v. i. > Projects > Local microstructural changes induced by static and dynamic indentation in nanostructured and nanolaminate coatings

Local microstructural changes induced by static and dynamic indentation in nanostructured and nanolaminate coatings

Co-investigatorRNDr. Jiří Buršík, CSc., DSc.
Number of Project15-17875S
AgencyGrantová agentura České republiky
Duration2014-12-31 - 2017-12-30

Anotace
The main subject of the project was preparation of novel nanostructured and nanolaminate coatings using magnetron sputtering, and complex analysis of coating response to local static and dynamic indentation tests. Original data were obtained from indentation tests in a broad range of applied loads; microstructure of deformed volume was studied by advanced methods of electron microscopy (SEM including 3D mapping using FIB, TEM including high resolution), deformation mechanisms and failure onsets were assigned and various effects detected on the indentation curves (such as pop-ins and slope discontinuities) were interpreted in terms of observed microstructural changes and results of computer modelling of indentation response. A complex software for analysis of indentation results was developed taking into account not only the unloading but also the loading part of indentation curves, which is often omitted. The method was applied for optimization of deposition conditions and novel nanolaminate coatings with superior mechanical properties were obtained.

2018

Souček P., Zábranský L., Buršíková V., Buršík J., Debnárová S., Svoboda M., Peřina V., Vašina P.: Fracture Resistance Enhancement in Hard Mo-B-C Coatings Tailored by Composition and Microstructure. J. Nanomater. 2018 (2018) 5184587


2017

Buršík J., Buršíková V., Souček P., Zábranský L., Vašina P.: Characterization of Ta-B-C nanostructured hard coatings. Mater. Sci. Eng. A 175 (2017) 012020

Zábranský L., Buršíková V., Souček P., Vašina P., Dugáček J., Sťahel P., Buršík J., Svoboda M., Peřina V.: Thermal stability of hard nanocomposite Mo-B-C coatings. Vacuum 138 (2017) 199-204

Buršíková V., Sobota J., Grossman J., Fořt T., Dupák L., Zábranský L., Souček P., Vašina P., Buršík J.: Study of Fracture Resistance of Nanolaminate Coatings Using Indentation and Impact Tests. Solid State Phenom. 258 (2017) 318-321


2016

Buršík J., Buršíková V., Souček P., Zábranský L., Vašina P.: Nanostructured Mo-B-C coatings. Rom. Rep. Phys. 68 (2016) 1069-1075

Buršíková V., Buršík J., Zábranský L., Souček P., Vašina P.: Study of the Local Mechanical Properties of Magnetron Sputtered Nanolaminate Coatings. Defect Diffus. Forum 368 (2016) 111-114

Zábranský L., Buršíková V., Souček P., Vašina P., Buršík J.: On the study of the mechanical properties of Mo-B-C coatings. Eur. Phys. J. - Appl. Phys. 75 (2016) 24716

Buršík J., Kuběna I., Buršíková V., Souček P., Zábranský L., Vašina P.: Mo-B-C and Ta-B-C Nanostructured Layers with Promising Fracture Toughness. Defect Diffus. Forum 368 (2016) 107-110