Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 47-50 (June 2008), p. 617-620 
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Amorphous Ti/C multilayers were prepared on titanium-alloy and silicon (100)-wafersubstrates by pulsed laser deposition. Films with different Ti concentration were synthesized bychanging the ablating time for Ti and C targets. The morphology and microstructure of Ti/Cmultilayers were characterized by scanning electron microscopy (SEM), Raman spectroscopy andX-ray diffraction (XRD). Both of the Ti and C monolayers were amorphous. The metallic Tistimulated the formation of more amorphous carbon phase by reducing the sp2 aromatic bonds andelongating the C-C chain bonds. The tribological properties of Ti/C multilayers were investigatedby ball-on-disk tribometer. The pure C film and the multilayers containing more than 68.8 at.% ofTi showed low wear resistance. The multilayer contained 36.8 at.% of Ti exhibited the lowest wearrate at 3.54×10–16 m3/N·m. The formation of carbon related interlayer and its effect on tribologicalperformance of the films were discussed
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 47-50 (June 2008), p. 540-544 
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: CNx/TiNx composite films were prepared on high-speed steel (HSS) substrate by pulsedlaser co-deposition process with the Ti/graphite combined targets and at a substrate temperature of200 ºC. The composition, morphology and microstructure of the films were characterized by energydispersive X-ray spectrum (EDS), scanning electron microscopy (SEM), X-ray diffraction (XRD)and high-resolution transmission electron microscopy (HRTEM). In the graphite/Ti range of 0.5–2.0of the target, the composite films composed of TiNx, a-CNx and a small amount of metallic Ti. TheTiNx disappeared in the films at a high graphite/Ti ratio of the target. The adhesion and tribologicalperformance of the films were investigated using a conventional scratch tester and a ball-on-disktribometer respectively. With increasing the graphite/Ti ratio of the target, the adhesion to substrateof the composite films deteriorated from 46 N to 26 N, and the friction coefficient drcreased from0.23 to 0.17. The composite film deposited at the graphite/Ti ratio of 1.0 showed a low frictioncoefficient, good adhesion and wear rate of 3.2×10–7 mm3/Nm in humid air
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 47-50 (June 2008), p. 549-553 
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: a-CNx films were deposited onto silicon wafers at temperatures from RT up to 600 °C byusing pulsed KrF excimer laser deposition. The composition, morphology and microstructure of theCNx films were characterized by X-ray photoelectron spectrum (XPS), scanning electronmicroscopy (SEM) and Raman spectrum. The tribological performance of the films wasinvestigated using a ball-on-disk tribometer. With increasing the deposition temperature rangingfrom RT to 400 °C, the N content of films dropped from 36 at.% to 22 at.%, the ratio of N-sp3 Cbonds, hardness and friction coefficient of the film decreased. Further increase of depositiontemperature led to the lack of nitrogen and the increasing degree of order in ringed sp2 C=C bondsof the amorphous carbon film. The mechanical and tribological performances became worse. Thefilm deposited at 300°C showed a low friction coefficient of 0.11 and a preferable wear resistanceof 1.65×10–7 mm3 Nm–1 in humid air
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 5 (1999), S. 135-144 
    ISSN: 1434-6079
    Keywords: PACS. 03.80.+r General theory of scattering - 42.65.Ky Harmonic generation, frequency conversion - 61.46.+w Clusters, nanoparticles, and nanocrystalline materials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Third harmonic generation from planar and spherical metal surfaces is studied theoretically through the standard Green function method, so that the results are not affected by the uncertainty associated with previous simplified models. In general the pattern of the non-linear scattering loosely resembles the pattern of Mie scattering. The strong backward scattering is uniquely related to the non-linear process. These results differ significantly from the predictions of the surface charge model.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...