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Listar por autor "Veen, A. van"
Mostrando ítems 1-17 de 17
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A description of bubble growth and gas release during thermal annealing of helium implanted copper
Evans, J.H.; Escobar-Galindo, Ramón; Veen, A. van (ScienceDirect, 2004-04)This paper describes an investigation into the migration and coalescence of equilibrium bubbles in helium implanted copper. ...
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A modified blister test to study the adhesion of thin coatings based on local helium ion implantation
Escobar-Galindo, Ramón; Veen, A. van; Evans, J.H.; Schut, Henk; Hosson, J.Th.M. de (ScienceDirect, 2005-01)A modified blister test has been developed based on helium ion implantation into selected areas of the metal substrate ...
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Adhesion behaviour of CrNx coatings on pre-treated metal substrates studied in situ by PBA and ESEM after annealing
Escobar-Galindo, Ramón; Veen, A. van; Schut, Henk; Janssen, G.C.A.M.; Hoy, R.; Hosson, J.Th.M. de (ScienceDirect, 2005-09-01)In this paper we present the first combined Positron Beam Analysis (PBA) and Environmental Scanning Electron Microscopy ...
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Depth-selective 2D-ACAR studies on low-k dielectric thin films
Eijt, S.W.H.; Veen, A. van; Falub, Claudiu V.; Escobar-Galindo, Ramón; Schut, Henk; Mijnarends, P.E.; Theije, Fremke de; Balkenende, A.R. (ScienceDirect, 2003)Depth-selective 2D-ACAR investigations on ordered mesoporous silica thin films provide direct evidence that para-positronium ...
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In situ mechanical, temperature and gas exposure treatments of materials combined with variable energy positron beam techniques
Schut, Henk; Veen, A. van; Rivera, A.; Huis, M.A van; Alba García, A.; Escobar-Galindo, Ramón (ScienceDirect, 2002-06-21)An overview is given of the extension of the Delft variable energy positron (VEP) beam facility with equipment for in situ ...
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Interface detection in poly-ethylene terephthalate–metal laminates using variable energy positron annihilation
Escobar-Galindo, Ramón; Schut, Henk; Veen, A. van; Rastogi, Rajeev; Vellinga, Willem Pier; Meijer, H.E.H. (ScienceDirect, 2005-05-01)Thin coatings of poly-ethylene terephthalate (PET) on metal (“laminates”) have been studied with a variable energy positron ...
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Nano-porosity in silica reinforced methyltrimethoxysilane coatings studied by positron beam analysis
Escobar-Galindo, Ramón; Veen, A. van; Schut, Henk; Falub, Claudiu V.; Balkenende, A.R.; With, Govert de; Hosson, J.Th.M. de (ScienceDirect, 2003-06)The porosity in particle reinforced sol-gel coatings has been studied. Silica particles (Ludox-TM40) are introduced into ...
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Positron annihilation and transmission electron microscopy study of the evolution of microstructure in cold-rolled and nitrided FeNiTi foils
Chechenin, N.G.; Veen, A. van; Escobar-Galindo, Ramón; Schut, Henk; Chezan, A.R.; Bronsveld, P.M. (IOPScience, 2001)Positron beam analysis (PBA) and transmission electron microscopy (TEM) were applied to study structural transformations ...
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Positron beam analysis of structurally ordered porosity in mesoporous silica thin films
Veen, A. van; Escobar-Galindo, Ramón; Schut, Henk; Eijt, S.W.H.; Falub, Claudiu V.; Balkenende, A.R.; Theije, Fremke de (ScienceDirect, 2003-09-15)Positron beam techniques have been employed to characterise low-k dielectric silica based films, which have two or three ...
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Positronium formation in NaY-zeolites studied by lifetime, positron beam Doppler broadening and 3-gamma detection techniques
Schut, Henk; Escobar-Galindo, Ramón; Kolar, Z.I; Veen, A. van; Clet, G. (ScienceDirect, 2000-06)Results of positron annihilation measurements on NaY pressed powders and deposited thin films using slow positron beam and ...
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Protrusion formation and surface porosity development on thermally annealed helium implanted copper
Escobar-Galindo, Ramón; Veen, A. van; Evans, J.H.; Schut, Henk; Hosson, J.Th.M. de (ScienceDirect, 2004-04)Surface effects on (1 1 1) copper single crystal surfaces after 30 keV helium implantation up to 2.4 × 1016 ions cm−2 and ...
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Stress reduction in a-C:H coatings through the addition of nitrogen to the feed gas
Rabbani, F.; Escobar-Galindo, Ramón; Arnoldbik, W.M.; Zwaag, S. van der; Veen, A. van; Schut, Henk (ScienceDirect, 2004-09)Intrinsic stress in amorphous hydrogenated carbon (a-C:H) coatings was reduced through addition of 10–20 sccm N2 to the ...
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Structural effects due to the incorporation of Ar atoms in the lattice of ZrO2 thin films prepared by ion beam assisted deposition
Holgado, J.P.; Escobar-Galindo, Ramón; Veen, A. van; Schut, Henk; Hosson, J.Th.M. de; González Elipe, A.R. (ScienceDirect, 2002-09)Two sets of ZrO2 thin films have been prepared at room temperature by ion beam induced chemical vapour deposition and ...
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Study of polymer/metal coating under stress using positron annihilation spectroscopy
Escobar-Galindo, Ramón; Veen, A. van; Alba García, A.; Schut, Henk; Hosson, J.Th.M. de (ScienceDirect, 2000-12-01)Positron annihilation spectroscopy (PAS) has proven to be a very useful technique for, e.g., the study of defects in ...
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Systematic positron study of hydrophilicity of the internal pore surface in ordered low-k silica thin films
Escobar-Galindo, Ramón; Veen, A. van; Schut, Henk; Eijt, S.W.H.; Falub, Claudiu V.; Balkenende, A.R.; Theije, Fremke de (ScienceDirect, 2003-09-15)Non-destructive Doppler Broadening (DB), Positronium fraction (f-Ps) and Two Dimensional Angular Correlation of Annihilation ...
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The design of an electrostatic variable energy positron beam for studies of defects in ceramic coatings and polymer films
Abadjieva, E.; Schut, Henk; Alba García, A.; Escobar-Galindo, Ramón; Veen, A. van; Pimblott, S.M. (ScienceDirect, 2002-06-22)An electrostatic variable energy positron beam for studying defects in ceramic coatings, polymer films and MOS-devices is ...
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Thermally induced delamination of amorphous hydrogenated carbon coatings monitored by positron beam analysis
Escobar-Galindo, Ramón; Veen, A. van; Schut, Henk; Rabbani, F.; Janssen, G.C.A.M.; Hosson, J.Th.M. de (ScienceDirect, 2004-03)In this work we have studied the adhesion of PVD amorphous hydrogenated carbon (a-C:H) thin coatings (<200 nm) on crystalline ...