Zobrazeno 1 - 10
of 27
pro vyhledávání: '"S. Paletto"'
Publikováno v:
Ceramics International. 24:189-198
The effects of titanium ion implantation on structural and mechanical properties of single crystal and polycrystalline α-alumina were studied. Grazing angle X-ray diffraction (GXRD) allowed the identification of structural alterations. Surface morph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c80073f2a4aac86b5f66147c4b036002
https://doi.org/10.1016/s0272-8842(97)00001-1
https://doi.org/10.1016/s0272-8842(97)00001-1
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 122:233-238
Polycrystalline tetragonal zirconia was implanted with 170 keV Ti ions to doses of 2 × 1016 ions/cm2 and 1 × 1017 ions/cm2. Localised plasticity, elasticity and fracture behavior have been investigated using nanohardness and microhardness indentati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07423b1c5a878b965f34e82a2940cfa4
https://doi.org/10.1016/s0168-583x(96)00724-0
https://doi.org/10.1016/s0168-583x(96)00724-0
Publikováno v:
Journal of Materials Science. 32:2911-2920
Nanoindentor techniques have been used to obtain the values of hardness and elastic modulus of α-Al2O3 polycrystalline implanted with metallic species at room temperature with 170 keV, doses ranging from 2×1016 to 2×1017 ions cm-2. After implantat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ee0c394d71fd0032de1d681c685c6e5
https://doi.org/10.1023/a:1018632819115
https://doi.org/10.1023/a:1018632819115
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 108:87-93
Polycrystalline α-Al2O3 was implanted at 170 keV with doses of 2 × 1016, 1 × 1017 or 2 × 1017 ions/cm2. The as-implanted samples were then annealed at 1000, 1200 and 1400°C. The mechanical properties, such as hardness (H) and Young's modulus (E)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8af6e54edf4458fec28103e245b44edb
https://doi.org/10.1016/0168-583x(95)00854-3
https://doi.org/10.1016/0168-583x(95)00854-3
Publikováno v:
Journal of the European Ceramic Society. 15:833-839
A study of ion implantation in polycrystalline alumina has been undertaken aimed at two principal areas. Firstly the measurement of the evolution of mechanical properties in the treated surface, such as hardness and fracture toughness, was undertaken
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c2ed039354238f9b94057d6d8145766
https://doi.org/10.1016/0955-2219(95)00055-y
https://doi.org/10.1016/0955-2219(95)00055-y
Publikováno v:
MRS Proceedings. 354
Polycrystalline titanium samples were implanted with N+ ions at high fluences and at several energies. The aim was to obtain 4000 Â thick nitrided layers of constant nominal concentration equal to 20% ,30%, and 40%.The results obtained by RBS showed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e5c04427f947646eeb77a0b6b5be663
https://doi.org/10.1557/proc-354-243
https://doi.org/10.1557/proc-354-243
Publikováno v:
Nouvelle Revue d'Optique. 5:53-56
We observe, during the bombardment of a metallic target by a beam of positive ions, an emission of light proceeding of the de-excitation of the neutral atoms which are sputtered in an excited state. We describe in this work a method of auxiliary exci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4bc48a5cbdf1f30bff026f43963299d
https://doi.org/10.1088/0335-7368/5/1/307
https://doi.org/10.1088/0335-7368/5/1/307
Publikováno v:
Journal of Radioanalytical Chemistry. 26:165-173
It is possible to excite by a Penning's discharge the neutral atoms sputtered during the bombardment of a target by positive ions and thus to increase the sensibility of the ionoluminescence analysis method. However, the characteristic lines of the t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe13f30d3aa6fba1fe3e0aebd257ad82
https://doi.org/10.1007/bf02516522
https://doi.org/10.1007/bf02516522
Publikováno v:
Journal of Physics D: Applied Physics. 2:441-445
The variation of the apparent coefficient of secondary emission of molybdenum bombarded by Cl+, Cl−, O+, O−, H+ and H− ions was determined as a function of the cleanliness of the surface and the energy and incidence of the ions. These measureme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56f2aca0f5f3aa1f0086fdce8108c27e
https://doi.org/10.1088/0022-3727/2/3/318
https://doi.org/10.1088/0022-3727/2/3/318
Publikováno v:
Nuclear Instruments and Methods. 56:23-31
The nature and intensity of negative ions emitted by Be, C, Al, Cu, Mo, Ag and Au targets, bombarded by A + ions are studied. Measurements are carried out in the residual atmosphere at a pressure of 10 −5 Torr. The variation of the emission as a fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6899082be15b992d8af91d74a18aa9df
https://doi.org/10.1016/0029-554x(67)90255-8
https://doi.org/10.1016/0029-554x(67)90255-8