Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Hamid Bolvardi"'
Autor:
Stephan Gleich, Rafael Soler, Hanna Fager, Hamid Bolvardi, Jan-Ole Achenbach, Marcus Hans, Daniel Primetzhofer, Jochen M. Schneider, Gerhard Dehm, Christina Scheu
Publikováno v:
Materials & Design, Vol 142, Iss , Pp 203-211 (2018)
A reduction in synthesis temperature is favorable for hard coatings, which are designed for industrial applications, as manufacturing costs can be saved and technologically relevant substrate materials are often temperature-sensitive. In this study,
Externí odkaz:
https://doaj.org/article/366bac3a120946b0afefeac0cfd39c23
Publikováno v:
Science and Technology of Advanced Materials, Vol 17, Iss 1, Pp 210-219 (2016)
A method to model the metastable phase formation in the Cu–W system based on the critical surface diffusion distance has been developed. The driver for the formation of a second phase is the critical diffusion distance which is dependent on the sol
Externí odkaz:
https://doaj.org/article/7dd183c70b184167999a18cee6ad068d
Autor:
Josef Daniel, Radek Žemlička, Mostafa Alishahi, Pavla Karvánková, Pavel Souček, Daniel Karpinski, Tomáš Fořt, Hamid Bolvardi, Andreas Lümkemann, Petr Vašina
Publikováno v:
Coatings
Volume 13
Issue 3
Pages: 515
Volume 13
Issue 3
Pages: 515
AlCrN coatings, which are characterized by high hardness and good wear resistance, are often used for drilling, milling, and punching tools. Therefore, the study of the behaviour of these coatings under cyclic impact loading is essential for their op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff8112a8921a4fb5a92610c96784d426
https://doi.org/10.3390/coatings13030515
https://doi.org/10.3390/coatings13030515
Autor:
Helmut Riedl, Peter Polcik, Hamid Bolvardi, Christian Koller, Paul H. Mayrhofer, M. Arndt, E. Aschauer
Publikováno v:
Wear. :309-316
The present study investigates the performance of four selected PVD coating materials in application near hot-forming procedure of Al-Si coated 22MnB5 steel sheets. These are: a Ti0.57Al0.43N/Mo-Si-B multilayer, a TiN base layer having a Mo-Si-B top
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e95e9e0672a30cd456a4513310c8f55
https://doi.org/10.1016/j.wear.2019.05.019
https://doi.org/10.1016/j.wear.2019.05.019
Autor:
V. Moraes, Hamid Bolvardi, Peter Polcik, Paul H. Mayrhofer, Rainer Hahn, Helmut Riedl, Christoph Fuger
Publikováno v:
MRS Communications. 9:375-380
Based on density functional theory, we recently suggested that metastable α-WB2 is a promising candidate combining very high hardness with high toughness. These calculations further suggested that the addition of Tantalum supports the crystallizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::224cf0cc14be767750e3ac620a1a8086
https://doi.org/10.1557/mrc.2019.5
https://doi.org/10.1557/mrc.2019.5
Autor:
Helmut Riedl, Paul H. Mayrhofer, Peter Polcik, Matthias Bartosik, Anton Davydok, Christina Krywka, Hamid Bolvardi, M. Arndt, E. Aschauer
Publikováno v:
Aschauer, E.; Bartosik, M.; Bolvardi, H.; Arndt, M.; Polcik, P.; Davydok, A.; Krywka, C.; Riedl, H.; Mayrhofer, P.H.: Strain and stress analyses on thermally annealed Ti-Al-N/Mo-Si-B multilayer coatings by synchrotron X-ray diffraction. In: Surface and Coatings Technology. Vol. 361 (2019) 364-370. (DOI: /10.1016/j.surfcoat.2019.01.075)
In order to analyse the main failure mechanism of multilayered coating material in oxidative environments, we separately investigated the cross-sectional strain/stress evolution induced by thermal loads and oxidation for the Ti-Al-N/Mo-Si-B model sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7e7ebd77dde7f1017e313a441294898
https://doi.org/10.1016/j.surfcoat.2019.01.075
https://doi.org/10.1016/j.surfcoat.2019.01.075
Autor:
M. Arndt, S. Sackl, T. Wojcik, E. Aschauer, Peter Polcik, Paul H. Mayrhofer, Helmut Riedl, Thomas Schachinger, Hamid Bolvardi
Publikováno v:
Vacuum. 157:173-179
Nano-composites often represent a challenge for spatially resolved analysing methods. The overlap of specific signals, for example in the mass-to-charge spectrum during atom probe tomography (APT) analysis or the intersection of electron energy loss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ee8f3dd0210ce4f9169e6b6510668bc
https://doi.org/10.1016/j.vacuum.2018.08.037
https://doi.org/10.1016/j.vacuum.2018.08.037
Autor:
Daniel Primetzhofer, M. Arndt, Hamid Bolvardi, Helmut Riedl, Paul H. Mayrhofer, Christoph Fuger, V. Moraes, Peter Polcik, Valentina Paneta
Publikováno v:
Scripta Materialia. 155:5-10
Physical vapor deposited (PVD) WB2 thin films crystallize in the α-AlB2-prototype structure rather than in their thermodynamically stable ω-W2B5-z-prototype structure. Contrary to the majority of α-AlB2-type transition metal diborides (TMB2), α-W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54d6d5063b04673029802bfc54ffeafc
https://doi.org/10.1016/j.scriptamat.2018.06.005
https://doi.org/10.1016/j.scriptamat.2018.06.005
Autor:
S. Sackl, E. Aschauer, Thomas Schachinger, Paul H. Mayrhofer, M. Arndt, Helmut Riedl, Peter Polcik, Hamid Bolvardi
Publikováno v:
Surface and Coatings Technology. 349:480-487
Mo-Si-B alloys came into the focus of research activities as an extremely creep resistant material for high temperature oxidative environments. Here, we studied the mechanical, microstructural, and chemical changes of physical vapour deposited protec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02628f488cbe741e06f50d356c4cc3fc
https://doi.org/10.1016/j.surfcoat.2018.06.026
https://doi.org/10.1016/j.surfcoat.2018.06.026
Publikováno v:
Surface and Coatings Technology. 347:304-312
The microstructural development of reactively sputter-deposited tantalum nitride thin films is investigated as a function of the N2-to-total-pressure ratio (pN2/pT) and the operating mode of the metallic tantalum cathode; by direct current magnetron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f92efeda2057ee56ee844d344e10a7c2
https://doi.org/10.1016/j.surfcoat.2018.05.003
https://doi.org/10.1016/j.surfcoat.2018.05.003