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  • 1
    Electronic Resource
    Electronic Resource
    Study on Spark Plasma Sintering of NiAl〈sub〉2〈/sub〉O〈sub〉4〈/sub〉-Metal Inert Anodes (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 280-283 (Feb. 2007), p. 771-774 
    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: NiAl2O4-metal composite material is an effective candidate for anodes used in industrial production of aluminium as a substitute for graphite anodes. NiAl2O4-Cu-Ni anode was prepared by spark plasma sintering in present paper. According to the density and electrical conductivity of the anodes, the optimal process parameters were given and the result showed that sintering temperature had the most significant influence on the properties of the inert anodes. Moreover, NiO was added to the inert anodes. The results showed that adding NiO will highly increase electrical conductivity of the inert anodes. SEM and optical microscope were applied to study the mechanism of the effect of NiO on the inert anodes
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.280-283.771.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of Nonlinear Shear Strength Characteristic on the Slope Stability of Super High Rockfill Dam (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 2732-2735 
    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: Linear and nonlinear shear strength models of rockfill, and the safety factor criterion ofnonlinear shear strength were discussed in this paper. The slope stability of 261.5 m high Nuozhadurockfill dam was analyzed with three different shear strength models. The safety factors are almostequal and the positions of potential failure surface are similar. It is found that the allowable safetyfactor base on linear criterion in the existing code can be used without any change when applyingnonlinear shear strength rules
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2732.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Lapping Process of Diamond Cutting Tool by Molecular Dynamics Simulating (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 359-360 (Nov. 2007), p. 249-253 
    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: Molecular dynamics is a rapidly developing field of science and has become an establishedtool for studying the dynamic behavior of material machining. A three-dimensional moleculardynamics (MD) model about the atoms of the diamond cutting tools and the diamond grits is built byusing the molecular dynamics. The Tersoff potential function is used to calculate the force and potentialenergy among the atoms of the diamond tools and the atoms of the diamond grits. The lappingprocesses at a special cutting depth are simulated. The variety of the specimen potential energy in thelapping process is observed. The mechanism of the diamond micro machining and the form of thesurface formation are given by comparing the distribution maps of atoms in initial and cutting states.This study will give a strong support to the diamond cutting tools’ lapping
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.359-360.249.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Residual Strain Measurement of Femtosecond Laser Microexploded Glass by Nanoindentation (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 205-209 
    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: By focusing femtosecond laser pulses in the bulk of a quartz wafer, sub-surfacewaveguides were microexploded. The material around the femtosecond laser inducedmicroexplosive zone was densified, which altered local refractive index. Changes in materialdensity can take corresponding variations in nanomechanical properties, which were proved by thedepth dependent modulus and hardness variations tested by nanoindentation in the area around themicroexplosive zone. Changes in refractive index were correlated with residual strains along radialdirection of the waveguide cross section. An equation of residual strain in such area that based onnanoindentation data was set up, so as to discover density and refractive index variations in theadjacent areas of femtosecond laser microexplosive zone indirectly
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.205.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Block Copolymer Films Hierarchical Assembly in Confinement (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 437-441 
    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: Ultrathin block copolymer films are promising candidates for bottom-up nanotemplatesin hybrid organic-inorganic electronic, optical, and magnetic devices. Key to many futureapplications is the long range ordering and precise placement of the phase-separated nanoscaledomains. In this paper, a combined top-down/bottom-up hierarchical approach is presented on howto fabricate massive arrays of aligned nanoscale domains by means of the self-assembly ofasymmetric poly (styrene-block-ethylene/butylenes-block-styrene) (SEBS) tirblock copolymers inconfinement. The periodic arrays of the poly domains were orientated via the introduction of AFMmicromachining technique as a tool for locally controlling the self-assembly process of triblockcopolymers by the topography of the silicon nitride substrate. Using the controlled movement of 2-dimensional precision stage and the micro pressure force between the tip and the surface bycomputer control system, an artificial topographic pattern on the substrate can be fabricatedprecisely. Coupled with solvent annealing technique to direct the assembly of block copolymer, thismethod provides new routes for fabricating ordered nanostructure. This graphoepitaxialmethodology can be exploited in hybrid hard/soft condensed matter systems for a variety ofapplications. Moreover, Pairing top-down and bottom-up techniques is a promising, and perhapsnecessary, bridge between the parallel self-assembly of molecules and the structural control ofcurrent technology
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.437.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Characteristics and Chemical Stability of the Bioactive Titania Layer Formed on Ti, Ti-6Al-4V and NiTi SMA through a Low Temperature Oxidation Process (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 47-50 (June 2008), p. 1403-1406 
    Details
    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: To improve the biocompatibility and bioactivity of titanium and titanium alloys, a titaniumoxide layer was synthesized on Ti, Ti-6Al-4V and NiTi shape memory alloy (SMA) using aH2O2-oxidation and hot water aging technique. The surface of these metals before and after theoxidation treatment was characterized using scanning electron microscopy and energy dispersiveX-ray spectroscopy. Because of the synthetic titanium oxide surface layer, the Al and V contents onthe surface of as-oxidized Ti-6Al-4V decreased significantly. Similarly, the Ni content on the surfaceof as-oxidized NiTi SMA was also significantly reduced. Potentiodynamic polarization curvesindicated that the synthetic titania layer was more chemically stable than the spontaneous titania filmon the metals. Among the three metals, the oxide layer on Ti was the most stable chemically. The invitro bioactivity of as-oxidized metals was assessed through incubation in simulated body fluid(SBF). Compared to as-oxidized Ti-6Al-4V and NiTi SMA, as-oxidized Ti was the most bioactive
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/41/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.1403.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Crystallization Behavior and Microstructure of B〈sub〉2〈/sub〉O〈sub〉3〈/sub〉-Al〈sub〉2〈/sub〉O〈sub〉3〈/sub〉-SiO〈sub〉2〈/sub〉 Glass-Ceramics (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 51 (June 2008), p. 149-154 
    Details
    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: The influences of B2O3/SiO2 ratio and different alkali earth metal oxides MO (M= Ba, Mg,Ca) on the crystallization behavior of B2O3-Al2O3-SiO2 (BAS) glass were investigated by means ofDSC, XRD and SEM. With the reduction of B2O3/SiO2 ratio, the crystallization activation energyincreases at first and then decreases, reaching the minimum value of 375.4 kJ·mol-1 when theB2O3/SiO2 ratio is 2.2. The crystalline indices (n) are all more than 4, which indicates that the glass isin bulk crystallization. When the glass was heated to 800°C, the primary precipitated crystalline phasewas Al4B2O9. With the increase of temperature up to 1100°C, Al18B4O33 and Al5BO9 appeared andbecame the major crystalline phases in BAS glass-ceramics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/41/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.51.149.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Precision Machining of Silicon Carbide with Diamond Micro Tool Array (DMTA) (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 321-326 
    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 advanced conditioning technique was developed to precisely and effectivelycondition the nickel electroplated mono-layer coarse-grained diamond grinding wheel of 46[removed info]m and91[removed info]m grain size with an aim to fabricate Diamond Micro Tool Arrays (DMTA), to meet the highdemands of form accuracy, surface quality and low subsurface damage in ductile machining ofsilicon carbide (SiC). The precision machining experiments on SiC were carried out on a precisiongrinder to determine the applicability of these fabricated diamond micro tool array (DMTA). Theexperimental result indicates that the newly developed DMTA is applicable and feasible to realizeductile machining on SiC with high efficiency and low diamond tool wear rate, which shows a goodprospect to apply this new concept diamond tool type in precision machining of SiC, as well as theother brittle and hard-to-machine materials
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.321.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Fabrication of Patterned Metal Films on Organic Substrates by Transfer Printing (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 524-527 
    Details
    ISSN: 1662-9752
    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: Here a simple and direct method based on transfer printing has beep developed, in whichrigid stamps transfer metal films deposited on the relief surface of the stamps onto patterned organicsubstrates. Ultra-precision machining technology is combined with conventional photolithography tofabricate patterned Si stamps and organic substrates by replica molding. Experiment results indicatethat patterned metal films on Silicon stamps were successfully transferred onto PDMS substrates.Fabrication of patterned metal films on organic substrates by transfer printing may suit for fabricatingsub-micrometer and nanometer scale features in a single process
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.524.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Study Morphology Transitions in Self-Assembled Triblock Copolymer Thin Films with Nanostructures by AFM (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 165-168 
    Details
    ISSN: 1662-9752
    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: As a “bottom-up” approach to nanostructures for nanofabrication, self-assembled blockcopolymer thin films have received much attention not only thanks to the scale of the microdomainsbut also due to the convenient shape tunability. In order to realize applications of self-assembledblock copolymer thin films in nanotechnologies, control over microdomain spatial and orientationalorder is paramount. In this paper, using atomic force microscopy (AFM), we studied systemicallynanostructure transitions induced by post-solvent annealing in self-assembled block copolymer thinfilms. Furthermore, a variety of thin films with well-ordered nanostructures, which can be employedas templates for nanotechnologies, have been realized simply and at low cost
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.165.pdf
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