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  • 2005-2009  (10)
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Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of Nano-Sized Co-Sb Compounds through Solvothermal Routes (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 136 (Feb. 2008), p. 57-62 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Skutterudite materials have received great attention because their promising propertiesfor thermoelectric (TE) applications. Among the family of skutterudites, CoSb3 has been intensivelyinvestigated due to its large electrical conductivity and Seebeck coefficient. However, its thermalconductivity is too high to make it an effective TE material. Nanostructuring of CoSb3 has thedesirable effects of reducing its lattice thermal conductivity as the point imperfections or grainboundaries can scatter phonons (heat carrier) more effectively than electrons (charge carrier). In thisstudy, nanostructured CoSb3 was synthesized by solvothermal routes using CoCl2·6H2O and SbCl3as precursors dissolved in anhydrous ethanol with the reaction temperature kept at 240°C. Inaddition to the CoSb3 phase, other Co-Sb compounds were also formed during the reaction process.In this paper, we investigated the effects of processing parameters, such as concentration ofCoCl2·6H2O, SbCl3 and NaBH4 in ethanol and thermal duration of solvothermal synthesis, on theyield of CoSb3 phase
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.136.57.pdf
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The Factors Influencing on Cutting Edge Radius of Ultra-Precision Diamond Cutting Tools in Mechanical Lapping (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 304-305 (Feb. 2006), p. 345-349 
    Details
    ISSN: 1013-9826
    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 brittle-ductile transition lapping mechanism is proposed for the mechanical lapping of ultra-precision diamond cutting tools, and then the critical depths of cut for brittle-ductile transition in different orientations and on different planes are deduced in theory. Combined the critical lapping depth with the contact accuracy between rotating scaife and lapped tool surface, the influences of processing factors on cutting edge radius are studied. Both the theoretical analyses and experimental results indicate that the vibration of lapping machine tool and surface quality of scaife have enormous influences on the sharpened cutting edge. And lapping compression force has an optimal value. Lapping rate should be considered when lapping velocity is selected. But the smaller the lapping velocity is, the littler the cutting edge radius sharpened. Finally, the optimal selections are performed for each influencing factor and a perfect diamond tool is lapped in ductile mode witha cutting edge radius of 30~40nm and a surface roughness Ra of 0.7nm
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/50/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.304-305.345.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Three-Dimensional Micromachining Based on AFM (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 800-804 
    Details
    ISSN: 1013-9826
    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: With the development of science and technology, Atomic Force Microscope is widelyapplied to the field of machining process in nanometer scale. Due to the limitation of the inventivepurpose of AFM, only height mode and deflection mode can be applied in AFM-tip micromachining.It can’t control the machining depth during the micromachining process at present. In this paper, anew micromachining system is set up, which composed of a high precision three-dimensional stage,an AFM, a diamond probe and a special control device. By utilizing variation parameters PIDalgorithm and controlling the machining depth directly, the micromachining system can resolve theproblem mentioned above
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.800.pdf
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Finite Element Method Predicts the Distribution of Cutting Temperature in Diamond Turning (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 339 (May 2007), p. 100-105 
    Details
    ISSN: 1013-9826
    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: In this paper, a coupled thermo-mechanical FE model is proposed to simulate the cuttingtemperature’s distribution produced in diamond turning. Simulated results indicate that the heatconverting from plastic work has prominent effects on the distribution shape of cutting temperaturefield, and with an increment in cutting velocity, the locating site of maximal cutting temperatureshifts from the contact area between tool tip and chip root to the contact area between rake face andchip. Cutting edge radius has minute influence on the distribution shape of cutting temperature field,but the bigger the cutting edge radius is, the higher the maximum cutting temperature in cuttingregion. Rake angle also has slight effects on the maximal temperature when it is more than 10○.While clearance angle reaches to 6○, the maximum cutting temperature approaches the smallest
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.339.100.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of the Substrate on the Determination of SEBS Thin Film Mechanical Properties by Nanoindentation (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 766-769 
    Details
    ISSN: 1013-9826
    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: In order to investigate nanoindentation data of polymer film-substrate systems and to learnmore about the mechanical properties of polymer film-substrate systems, SEBS (styreneethylene/butylene-styrene) triblock copolymer thin film on different substrate systems have beentested with a systematic variation in penetration depth and substrate characteristics. Nanoindentationexperiments were performed using a Hysitron TriboIndenter with a Berkvoich tip. The resulting datawere analyzed in terms of load-displacement curves and various comparative parameters, such ashardness and Young’s modulus. The results obtained by the Oliver and Pharr method show how thecomposite hardness and Young’s modulus are different for different substrates and differentpenetration depth
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.766.pdf
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    AFM for Preparing Si Masters in Soft Lithography (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 762-765 
    Details
    ISSN: 1013-9826
    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: Atom Force Microscopy (AFM) can be employed to create surfaces in Si substrate withrecessed features. The resulting patterns can serve as masters to make the required elastomeric stampsfor soft lithography. Morphology analysis of patterned features on Si substrate andpolydimethylsiloxane (PDMS) stamp by AFM imaging confirms that pattern can be successfullytransferred from Si substrates to PDMS stamps. It is shown that this method for creating masters canbe performed with an AFM, making this method particularly straightforward, economical andaccessible to a large technical community that are provided with AFM for measurement
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.762.pdf
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Measurement of Roundness and Sphericity of the Micro Sphere Based on Atomic Force Microscope (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 796-799 
    Details
    ISSN: 1013-9826
    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: The measuring system was developed based on a reconstructed atomic force microscope(AFM) combined with the precision rotating air-bearing and assistant transform shaft. By thissystem the experiment was carried out according to the principle of three orthogonal orientationstowards a micro sphere about 0.46 mm in diameter, and nine one-dimensional traces around thesphere were obtained. Analyses on roundness and sphericity are carried out from the measureddata.The results show that the maximal roundness is 0.3895 μm, and the sphericity error is 0.3880μm.These evaluations are significant references to evaluate its fabrication accuracy or to reform itsmachining processes
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.796.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Time Series Analysis for the Mechanical Lapping of Single Crystal Diamond Cutting Tools (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 291-292 (Aug. 2005), p. 331-336 
    Details
    ISSN: 1013-9826
    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: In order to avoid the stochastic damage of micro cleavage on cutting edge, a brittle-ductile transition lapping mechanism is proposed for the mechanical lapping of single crystal diamond cutting tools to direct the tools lapping. As expected, the critical depths of cut for brittle-ductile transition in different orientations and on different crystal planes are calculated. According to the theoretical results, the actual dynamic depth of cut is controlled within the critical depth of cut, which ensures that the tool lapping is carried out in ductile regime and the changes of cutting edge radiuscharacterize with some specific time laws in lapping. Therefore, the time series and nonlinear least square methods are used to analyze the changing laws of cutting edge radius. As a result, a coupled model to build a bridge between the cutting edge radius changes and lapping time is developed. In terms of this developed model, a required cutting edge radius restricts a tool’s lapping time. Above all, the cutting edge radius is known in advance and has no needs measuring. So the productionefficiency of diamond cutting tools is improved and its production cost is reduced accordingly
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.291-292.331.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Study on Lapping Process of Diamond Cutting Tools (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 304-305 (Feb. 2006), p. 104-108 
    Details
    ISSN: 1013-9826
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/50/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.304-305.104.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Carbon Nanotube as Probe for Atomic Force Microscope (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 758-761 
    Details
    ISSN: 1013-9826
    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: An improved arc welding method was developed to fabricate carbon nanotube probe underdirect view of optical microscope. The new fabrication method here needs not coat silicon probe inadvance with metal film, which greatly reduces the fabrication’s difficulty. An easy method forshortening the nanotube probe was also developed. The improved fabrication method here is simpleand reliable. The fabricated carbon nanotube probe showed good properties of higherlength-to-diameter aspect ratio, better wear characteristics than silicon probe
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.758.pdf
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