Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Maritza G. J. Veprek-Heijman"'
Publikováno v:
Advanced Materials Research. 1135:218-233
The design and application of hard and superhard (H ≥ 40 GPa) coatings and their properties are discussed with the focus on superhard nanocomposites. The main part of the article deals with examples of industrial applications of hard and superhard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2991e48b6cedc49ccb33811dfd4ed0d3
https://doi.org/10.4028/www.scientific.net/amr.1135.218
https://doi.org/10.4028/www.scientific.net/amr.1135.218
Publikováno v:
Surface and Coatings Technology. 284:206-214
We use non-linear finite element modeling (FEM) to study the deformation of softer substrate during the indentation into hard and superhard coatings, and its influence on the measured compound hardness of the system coating-substrate. It is shown tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2be584d8f31e054a86dab5b5cdb22bfb
https://doi.org/10.1016/j.surfcoat.2015.10.064
https://doi.org/10.1016/j.surfcoat.2015.10.064
Publikováno v:
Microstructure-Property Correlations for Hard, Superhard, and Ultrahard Materials ISBN: 9783319292892
We discuss the methods and problems associated with a reliable measurements of mechanical properties of superhard (H ≥ 40 GPa) and ultrahard (H ≥ 80 GPa) materials and coatings. It is shown that the “nanoindentation” can yield incorrect resul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7295c144df29d11dab99cb8a6b1c728d
https://doi.org/10.1007/978-3-319-29291-5_4
https://doi.org/10.1007/978-3-319-29291-5_4
Publikováno v:
Microstructure-Property Correlations for Hard, Superhard, and Ultrahard Materials ISBN: 9783319292892
The recent search for new super- and ultrahard materials is briefly summarized. It is shown that many materials with high elastic moduli cannot be superhard because, upon finite shear, electronic instabilities and transformations to softer phases occ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66f3b1217cae8bf3b94ab020cbf4c894
https://doi.org/10.1007/978-3-319-29291-5_6
https://doi.org/10.1007/978-3-319-29291-5_6
Publikováno v:
Thin Solid Films. 522:274-282
Impurities, in particularly oxygen, degrade the mechanical properties of superhard nc-TiN/a-Si3N4 nanocomposites. In the present paper we show that relatively small oxygen impurities also hinder the diffusion and already at a level of about ≥ 0.8 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0906bb4c0332f2e851fb11d5636a5e80
https://doi.org/10.1016/j.tsf.2012.08.048
https://doi.org/10.1016/j.tsf.2012.08.048
Publikováno v:
Surface and Coatings Technology. 204:1898-1906
The original finding of Veprek et al. that in nc-TiN/a-Si 3 N 4 and in nc-TiN/a-Si 3 N 4 /TiSi 2 nanocomposites, deposited under conditions which allow complete phase segregation by spinodal mechanism, the maximum hardness of ≥ 45 and > 100 GPa, re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::290f23abb942f6d2cfccb490a089a7a3
https://doi.org/10.1016/j.surfcoat.2009.09.033
https://doi.org/10.1016/j.surfcoat.2009.09.033
Publikováno v:
Solid State Phenomena. 159:1-10
The recent attempts to design new super- and ultrahard materials concentrate predominantly on those with high elastic moduli. This approach neglects the fact that elastic moduli describe the reversible, elastic response to small strain near equilibri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d712730919b4d1236bdaed34fea7c08
https://doi.org/10.4028/www.scientific.net/ssp.159.1
https://doi.org/10.4028/www.scientific.net/ssp.159.1
Publikováno v:
Surface and Coatings Technology. 203:3385-3391
Using a non-linear constitutive material model for super- ( H ≥ 40 GPa) and ultrahard ( H ≥ 80 GPa) materials that accounts for the pressure enhancement of elastic moduli and of plastic resistance, we present the effect of plastic deformation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11356d7bc2d3d2a30ef34a5ca02367a9
https://doi.org/10.1016/j.surfcoat.2009.04.028
https://doi.org/10.1016/j.surfcoat.2009.04.028
Publikováno v:
Applied Catalysis B: Environmental. 89:123-127
Fe–Cr–Ni and Fe–Cr–Al sintered spheres are explored as alternative support structures for automotive exhaust catalysts. Initially the activity of Pt supported on the metal support and on ceramic monoliths (cordierite) for the oxidation of CO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93f20bfadbbbd371aee9ca788319d019
https://doi.org/10.1016/j.apcatb.2008.12.006
https://doi.org/10.1016/j.apcatb.2008.12.006
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 26:313-320
In a pure-hydrogen glow discharge plasma, the etch rate of silicon increases with increasing temperature up to about ≥1100 A/s at 60–80 °C and, upon a further increase of the temperature, etch rate strongly decreases, showing Arrhenius-like depe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe83657ec113b37e9ec3592015a3104f
https://doi.org/10.1116/1.2884731
https://doi.org/10.1116/1.2884731