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  • 2005-2009  (27)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Application of Rare Earth Permanent Magnet on Magnetic Abrasive Machining (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 712-714 
    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: Because of the raw material elements and its purity and so on, the Nd-Fe-B permanent magnet,the strongest magnetic material, which needs artificial synthesis, can hardly be used directly. Theperformance of the permanent magnet has not yet been greatly developed owing to the limitation of theartificial synthesizing technology, of the powder sintering technology and that of the application. In thispaper, the magnetic abrasive machining method as a new application is put forward, and from thisviewpoint, are discussed the performance and the processing technology of the permanent magnet and themagnetic abrasive machining method. A sintering route combining the direction heat treatment techniqueto increase the magnetic energy is suggested
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.712.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Polishing Processing to Internal Surface of Non-Magnetic Pipe by Magnetic Abrasive Finishing (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 53-54 (July 2008), p. 137-140 
    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: It is very difficult matter that polishes the internal surface of the pipe, especially to the thinpipe with the traditional surface technology. Because a usual tool cannot into the inner surface of thethin pipe and automation do not achieved easily. This paper brings up a new method that utilize thecharacteristic of the magnetic force line may penetrate the non-magnetic material, may using themagnetic abrasive finishing (MAF) method complete to the inner surface of the thin pipe precisepolishing. The magnetic abrasive finishing does not need special equipment to complete the complexshape internal surface polishing. Moreover, we already obtained the famous processing effectthrough the experiment. Meanwhile this paper analyses some factors of influences efficiency, andpropose some solution method
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/41/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.53-54.137.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Study on the Characteristics of Simply Mixed the Magnetic Abrasives Particles (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 24-25 (Sept. 2007), p. 133-138 
    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: Utilize the characteristic that magnetic force line may penetrate the non-magneticmaterial, using the magnetic abrasive finishing (MAF) method complete to the non-magnetic smallworkpiece surface precise processing. In order to enhance polishing efficiency, usually with themagnetic particles and abrasive particles mixes together in the sinter method or the cementationmethod, the cost is higher; the variety is not also complete. Therefore, use the simply mixed methodmixed the ferromagnetism iron particles, the alumina particles and the lipin, directly participates inmagnetism polishing, already obtained the good processing effect through the experiment. Thispaper analysis and explanation the best experimental condition such as the granularity proportion ofthe ferromagnetism iron particles and the alumina particles etc
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.24-25.133.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Compressive Properties of Porous Metals with Homogeneous Pore Characteristics (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 340-341 (June 2007), p. 415-420 
    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: Spacer method is excellent technique of processing porous metals with well-controlledpore characteristics such as porosity (up to 90%) and pore size (as small as several hundredmicrometers). Compressive properties of porous aluminum fabricated by the spacer method areinvestigated. They were subjected to monotonic compression tests at room temperature, and showedless fluctuated flow stress during their compressive deformation than conventional porous aluminumalloy, reflecting their homogeneous pore characteristics. Also, shortening behavior of the porousaluminum fabricated by the spacer method during cyclic compression was significantly differed fromthat of conventional porous aluminum alloy. Therefore, it can be concluded that the homogeneity ofpore characteristics is responsible for compressive properties of porous metals. Monotoniccompression tests on porous copper specimens with various porosities, which were made by thespacer method, were also conducted. The yield stress of the porous copper with high porosity (or lowrelative density) depended on the relative density more strongly than that of the porous copper withlow porosity (or high relative density). It is presumed that porous metals with high porosity and oneswith low porosities have different deformation mechanisms
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.340-341.415.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    The Effect of Yttria-Stabilized Zirconia on the Properties of the Fluorine-Substituted Hydroxyapatite Ceramics Prepared by Pressureless Sintering (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Journal of biomimetics, biomaterials, and tissue engineering Vol. 1 (July 2008), p. 57-68 
    Details
    ISSN: 1662-100X
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Biology , Technology
    Notes: Hydroxyapatite-zirconia composites have received much attention during the last decadedue to their combination of the desirable mechanical properties of zirconia and the excellentbioactivity of hydroxyapatite (HA). However, thermal decomposition of the hydroxyapatite phase andreaction between the zirconia phase and the hydroxyapatite phase remain a major problem in thehydroxyapatite-zirconia composites. In this study, thermally stable and fluorine-substitutedhydroxyapatite (Ca10(PO4)6(OH)0.8F1.2; coded as HA06F) was prepared by a sol-gel method to replacethe hydroxyapatite. Yttria-stabilized zirconia (YTZP) was also prepared by a sol-gel method in orderto produce HA06F-YTZP composites with 5, 10, 15, 20, 40, and 60 wt% YTZP by simple andcost-effective pressureless sintering. Thermogravimetric analysis (TGA) and x-ray diffraction (XRD)of the HA06F-YTZP composites showed that the thermal stability of the HA06F matrices could bemaintained when the YTZP content did not exceed 20 wt% and for sintering temperatures less than1400 oC. Dilatometric analysis and microstructural observation revealed that the YTZP phase in theHA06F-YTZP composites retarded the densification of the composites if the zirconia content wasover 20 wt%. Electron scanning microscopy (SEM) and high resolution transmission electronmicroscopy (HR-TEM) of the HA06F-YTZP composites showed that the YTZP second phase had asize in the nanometer scale and the reaction between the HA06F phase and the zirconia phase wassuppressed. Mechanical properties including the Knoop hardness, the Young’s modulus, and thefracture toughness of the HA06F-YTZP composites increased with the YTZP content until theoptimal content of 20 wt%; higher YTZP contents led to low mechanical properties due to poordensification of the composites and the severe thermal decomposition of the HA06F phase. Theoptimal HA06F-20YTZP composite also showed desirable attachment and proliferation of osteoblastcells. Nevertheless, the study of the composite system indicated the limitations of the pressurelesssintering technique. To achieve the full potential of the composites for medium or low load bearingapplications, a pressure-assisted sintering technique would still be necessary
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/43/transtech_doi~10.4028%252Fwww.scientific.net%252FJBBTE.1.57.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Sound Absorption Behavior of Porous Al Produced by Spacer Method (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 15-17 (Feb. 2006), p. 422-427 
    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: Porous Al specimens with a pore size range from 212-300 to 610-700 μm, a porosity from85 to 95% and a specimen thickness from 2 to 20 mm were produced by the spacer method, and theirsound absorption capacity was investigated. For these specimens, sound absorption coefficientincreased with increasing porosity. On the other hand, sound absorption coefficient variedinconsistently with the variation of pore sizes. The latter may be attributed to variation of aperturesizes of each specimen because the porous Al specimens with differerent pore sizes produced by thespacer method should have different aperture sizes. Sound absorption coefficient increased at thefrequency below 2000 Hz with increasing specimen thickness
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.15-17.422.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Porous Metals Produced by Spacer Method as Ecomaterials (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 15-17 (Feb. 2006), p. 416-421 
    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: Porous metals, or metallic foams, are emerging ecomaterials that can be applied tostructural use, shock absorber, filter, heat exchanger, etc. Their very low densities and peculiardeformation behaviors will facilitate the application. The control of pore characteristics such asporosity and pore size distribution can be successfully achieved by spacer method. In this paper,fabrication of porous aluminum via the spacer method is introduced and their excellent properties dueto homogeneous pore characteristics are exhibited
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.15-17.416.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Kinetics of Interfacial Reaction in SiC〈sub〉f〈/sub〉/Ti6Al4V Composites (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 546-549 (May 2007), p. 1627-1632 
    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: The Ti6Al4V composites reinforced with Chinese SiC fiber was manufactured and thenthermally exposed at 800°C, 900°C and 1000°C, respectively, for up to 500h. The interfacial reactionproducts were identified as TiC between Ti6Al4V and the C-coating of the SiC fiber. However, if theSiC fiber has no C-coating, the interfacial reaction forms TiC, Ti3SiC2, Ti5Si3(Cx) and Ti3Si(Cx). Thethickness of the interfacial reaction zone was measured and it is found that the thickening rate isslower in the samples in which the SiC fiber has the C-coating. The growth of the interfacial reactionproducts is diffusion-controlled and the parameters of the growth kinetics, k0 and Q, were determined,respectively. The profile of the element distribution was calculated according to the diffusion theoryand is well consistent with the expeimental data
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.1627.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Automated aerostructure assembly (2005)
    Bradford : Emerald
    Industrial robot 32 (2005), S. 383-387 
    Details
    ISSN: 0143-991X
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Purpose - Describes the application of standard industrial robots to the assembly and riveting of aerostructure sub-assemblies. Design/methodology/approach - Describes the design and operation of special purpose end-effectors for assembly and solid riveting and their integration in an aerostructure sub-assembly fabrication cell. The robots are controlled by a novel control system which allows the cell to compensate for distortion and misalignment of the components. Findings - Demonstrates that with advanced control standard industrial robots can be used to assemble aerostructure sub-assemblies. Originality/value - Introduces techniques for compensating for the inherent distortion that occurs in airframe components during manufacture. This is an enabling technology that will significantly increase the number of possible applications for robots in the assembly of aerostructures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/01439910510614646
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  • 10
    Electronic Resource
    Electronic Resource
    Postnatal isl1 + cardioblasts enter fully differentiated cardiomyocyte lineages (2007)
    [s.l.] : Nature Publishing Group
    Nature 446 (2007), S. 934-934 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Nature 433, 647–653 (2005) It has been drawn to Nature’s attention that K.R.C., S.E., C.-L.C., A.M. and K.-L.L. filed a patent application relevant to this work (patent number WO 2004/070013) in 2004, which should therefore have ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature05790
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