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  • 1
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    Soft Magnetic Composites in Novel Designs of Electrical Traction Machines (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-21
    Description: Nowadays, the manufacturing of electrical machines based on electrical steel laminations has been well established worldwide. Compared with the electrical steel, the soft magnetic composites (SMC) shows magnetic isotropy and lower eddy current losses. Thus, it becomes an important impulse promoting the development of new topologies of electrical machine. The application of SMC in the electrical traction machine for hybrid electrical vehicle or electrical vehicle has been researched in the work.
    Keywords: T1-995 ; Finite-Elemente-MethodeSoft Magnetic Composites ; Finite element method ; Axial flux machine ; Elektrische Traktionsmaschine ; Pulververbundwerkstoff ; Electrical traction machine ; Axialflussmaschine ; Transversalflussmaschine ; Transverse flux machine ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
    Language: English
    Format: image/jpeg
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    E-BOOK
  • 2
    Electronic Resource
    Electronic Resource
    Reduction of secondary defects in MeV ion-implanted silicon by means of ion beam defect engineering (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 3780-3784 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new concept of ion beam defect engineering is proposed. Reduction of secondary defects in 1 MeV As ion-implanted Si(100) has been investigated by Rutherford backscattering/channeling and high resolution electron microscopy. It is found that the additional irradiation of 1.6 MeV Si ions prior to two-step thermal annealing leads to a noticeable reduction of secondary defects. Good recrystallization of a buried amorphous layer is also obtained by irradiation of 1.6 MeV, 2×1015 Si/cm2 into the implanted Si sample held at elevated temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350889
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  • 3
    Electronic Resource
    Electronic Resource
    Structure and magnetic properties of Gd2Fe17−xGaxC2 compounds : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 6259-6261 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The single-phase compounds of Gd2Fe17−xGaxC2 (x=0, 1, 2, 3, 4, 5, and 6) with rhombohedral Th2Zn17-type structure were prepared by melt spinning for x≤1 and arc melting for x≥2. Their formation, structure, and magnetic properties were studied. The substitution of Ga for Fe in Gd2Fe17C2 helps the formation of the 2:17-type structure. The addition of Ga results in the increase of the lattice constants and the unit-cell volumes. The Curie temperature has a small change when x≤2, and then decreases rapidly with increasing Ga concentration. An approximately linear decrease of the saturation magnetization with x is observed when the nonmagnetic Ga atom is substituted for Fe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355417
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  • 4
    Electronic Resource
    Electronic Resource
    Metastable Nd2(Fe1−xCox)23B3 (0≤x≤1.0) compounds with the 2:23:3-type structure : The 6th joint magnetism and magnetic materials (MMM)−intermag conference (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 6763-6765 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Amorphous Nd2(Fe1−xCox)23B3 (0≤x≤1.0) alloys were prepared by melt spinning at a speed of 47 m/s. When the amorphous samples were annealed at 900 K for 20 min, they crystallized to the metastable 2:23:3 single phase for all x. A detailed study of structure and magnetic properties of metastable Nd2(Fe1−xCox)23B3 compounds has been made by x-ray diffraction and magnetization measurements. They are body-centered cubic, and the lattice constant decreases linearly from a=14.16 A(ring) for x=0 to 13.86 A(ring) for x=1.0. The Fe atom moment μ¯Fe for Nd2(Fe1−xCox)23B3 was found to increase with x from 2.02μB for x=0 to 2.17μB for x=0.8, when the Co atom moment μ¯Co is assumed to be constant, as made in previous papers for crystalline Fe–Co alloys. The Curie temperature Tc is found to increase monotonically with increasing x from 659 K for x=0 to about 1218 K for x=1.0. The thermomagnetic measurements showed that when the Nd2(Fe1−xCox)23B3 compounds were heated to certain temperatures, they decomposed to Nd2(Fe,Co)14B and α-(Fe,Co) phases. The decomposition temperature of metastable compounds was about 990±15 K, and was almost independent of the Co concentration x.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358124
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  • 5
    Electronic Resource
    Electronic Resource
    Capacitance–voltage characteristics of Bi4Ti3O12/p-Si interface (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 1784-1786 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electrical properties of the interface between Bi4Ti3O12 ferroelectric film and p-Si substrate have been studied by capacitance–voltage (C–V) characteristics. It is found that the interface barrier can be broken down temporally because of the charge injection from Si substrate into the ferroelectric thin film, and this charge injection behavior induces hump and valley structures in the C–V curves. It is also found that the polarization in the Bi4Ti3O12 film is aligned along a preferential direction from semiconductor to ferroelectric thin film, which is attributed to the ferroelectric/p-Si contact. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.121184
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  • 6
    Electronic Resource
    Electronic Resource
    Measurement of electron affinity in boron-doped diamond from capacitance spectroscopy (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 2891-2893 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Boron-doped diamond film sample has been grown on (100) silicon substrate using the microwave enhanced chemical vapor deposition method. It is found that the sample has very good material qualities and an excellent (100) surface morphology. Au/diamond Schottky was fabricated on the (100) surface to study electron affinity of the diamond sample. By measuring frequency dependence capacitance–voltage spectroscopy of the Schottky sample in high vacuum and at room temperature, a very small electron affinity of about 0.025 eV and a work function of about 5.165 eV have been obtained for the (100) surface of the diamond sample supposing the diamond band gap energy is 5.5 eV. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.119044
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  • 7
    Electronic Resource
    Electronic Resource
    Nanometer-Au-particle-enhanced photorefractivity in a polymer composite (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 3243-3245 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Doped with nanometer Au particles, a low-Tg photorefractive polymer composite, poly(N-vinylcarbazole):2,4,7-trinitro-9-fluorenone:4-(dicyanovinyl-N,N-diethylaniline), exhibited an effective enhancement on its photorefractivity. Measurements on two-beam coupling (TBC) as well as four-wave mixing were carried out at 633 nm wavelength. At an applied electric field of 118 V/μm, TBC coefficient as high as 206 cm−1 was obtained in the sample doped with Au particles, while only 152 cm−1 in the sample without Au particles. The measurements on the effective electro-optic coefficient and the photorefractive phase shift for two samples with and without doping Au particles were performed, respectively. The observations of distinct difference on the photorefractive phase shift and no difference on the effective electro-optic coefficient implied that enhancement on the photorefractivity was due to the increment of the density of the effective trap center by doping Au particles. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.125360
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  • 8
    Electronic Resource
    Electronic Resource
    Aqueous Sol-Gel Route to Barium Aluminosilicate Glass-Ceramics (1999)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 82 (1999), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The rapid hydrolysis of some alkoxides creates problems in alcohol-based sol–gel processes. This paper describes a simple aqueous sol–gel process for the synthesis of barium aluminosilicate gels and gel-derived glasses, in which the problem of the rapid hydrolysis of aluminum isopropoxide (the source of aluminum) is solved by a precipitation–peptization process that is cost effective. Tetraethylorthosilicate, aluminum isopropoxide, and barium acetate are used as the starting materials, and water is the solvent. The molecular network, crystallization behavior, weight-loss, and thermal characteristics of the gel and the gel-derived glass have been detected by Raman spectroscopy, XRD, DTA, and TGA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1999.tb01756.x
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  • 9
    Electronic Resource
    Electronic Resource
    An electromagnetic approach to analyze the performance of the substation's grounding grid in high frequency domain (2003)
    Bradford : Emerald
    Compel 22 (2003), S. 756-769 
    Details
    ISSN: 0332-1649
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: According to the method of moment, an effective electromagnetic approach for the substation's grounding grid in high frequency domain is presented. An efficient method based on the generalized pencil-of-function method is developed to calculate the generalized Sommerfeld integral. With the method, the value of Green's function in a two-layer medium can be obtained quickly and accurately. The number of unknown variables of the moment method is small. As the dipole antenna theory is introduced, the frequency of the injected current to the grounding grid can vary in a large scale. The method can be used to analyze not only the performance of the grounding grid, but also other grids located under the earth, in the air or penetrating a lossy interface. The computational results are in good agreement with those obtained by other method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03321640310475173
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  • 10
    Electronic Resource
    Electronic Resource
    The Effect of Post-Treatment on the Mechanical Behavior of Plasma Sprayed HA Coating (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 284-286 (Apr. 2005), p. 337-340 
    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: Plasma-sprayed hydroxyapatite coating on metal substrate has been prepared, two kinds of post-treatment methods have been used: (1) Heating in air at 650°C for 30 min, (2) Heating in water vapor at 125°C, 0.15Mpa for 6 hours. XRD showed that the nanocrystals of HA coating increased after water vapor treated. The interfacial tensiles strength between HA and the substrate were 45.0±1.82MPa, 39.1±1.27MPa and 30.3±1.61MPa for as-received coatings, water vaportreated coatings and heated in air coatings respectively. After 3 months implant in dogs limbs, the push-out strength between implants and bone were 11.27±2.71 MPa, 11.63±3.11MPa, 23.92± 2.01MPa and 18.8±1.82 MPa for pure Ti implants, as-received coating implants, water vapor treated implants and heated in air implants respectively. The results showed that the water vapor post treated HA coating have better mechanical behavior in vitro and in vivo
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.284-286.337.pdf
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