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  • 1
    Electronic Resource
    Electronic Resource
    Effect of cations on methane adsorption by NaY, MgY, CaY, SrY, and BaY zeolites (1993)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 97 (1993), S. 12894-12898 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100151a043
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  • 2
    Electronic Resource
    Electronic Resource
    High-pressure adsorption of methane in zeolites NaX, MgX, CaX, SrX and BaX (1991)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 95 (1991), S. 1722-1726 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100157a044
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation and stability of NdDyFeCoTi magneto-optical amorphous films : 35th annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 5994-5996 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Because the light rare-earth element Nd makes a significant contribution to the Kerr effect and the heavy rare-earth element Dy can improve the coercivity and perpendicular anisotropy, NdDyFeCoTi magneto-optical material was studied. The alloy targets were prepared by a vacuumm melting method with compositions (NdxDy1−x)25(Fe0.65Co0.30Ti0.05)75 with x=0.2–0.3. Because of the addition of Ti, the mechanical strength of the target was improved. Amorphous NdDyFeCoTi films were prepared by rf magnetron sputtering onto glass substrates at zero bias, a low Ar pressure of 3–7 mTorr, and a low-input sputtering power of 100–300 W. The magnetic and magneto-optical properties of these films were studied by VSM, Kerr hysteresis tracer, and Auger electron spectroscopy. The Kerr angle θk of 0.3° and the coercive force Hc of 3–5 kOe have been found. The stability of the films was examined by exposure in air for one month and annealing at 100–250 °C. The magneto-optical properties of the films exhibit no obvious change after exposure in air, but after annealing at 200–250 °C the properties of NdDyFeCoTi with a SiO2 protective layer became poor. As a result, it is necessary to improve the stability of NdDyFeCoTi magneto-optical films by a protective layer without oxygen such as AlN.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347789
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  • 4
    Electronic Resource
    Electronic Resource
    Computer Simulations on Mechanical Properties of Molecular Deposition Film (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 475-479 (Jan. 2005), p. 3665-3668 
    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 mechanical properties of the molecular deposition film deposited on an Au substrate are studied in the theory for the first time. Firstly, the quantum mechanics have been used to calculate the structure parameters and potential parameters of the molecular deposition film. Secondly, molecular dynamics simulations have been used to study indent process of the molecular deposition film with the action of Au tip. The results showed that an obvious jump to contact appears during the Au tip approaches the molecular deposition film; furthermore, the tilt angle andload of the molecules near the tip have the same tendency of hysteresis, which may be caused by the adhesive force between the tip and the molecular deposition film
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/10/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.475-479.3665.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation of Titania Film by Pyrolysis of Chelated Tetrabutyl Titanate (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 368-372 (Feb. 2008), p. 1468-1470 
    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: Preparation of titania films by pyrolysis of chelated tetrabutyl titanate was investigated. Filmsof tetrabutyl titanate were first formed on glass substrates by spin coating, and TiO2 films were preparedafter annealing at 500°C. The influences of annealing temperature, AcAc concentration, Ti(OBu)4concentration, PEG amount and coating times on the photocatalytic properties of TiO2 films were studied,and the films were characterized by XRD and DTA
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1468.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Research on Wear Mechanism of Surface Build-Up Welding Material of Brake Disc for Drilling Rig (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 535-538 
    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 improve resisting performance of heat, wear and erosion as well as anti-thermalfatigue, surface build-up welding material of brake-disc for drilling rig with better performance isdeveloped, and its wear mechanism is investigated based on friction and wear experiment at variabletemperature. Morphology, constituents and phase structure of wear surface of brake disc are analyzedby employing SEM, EDAX and XRD when thermal equilibrium temperature is at 150°C and 300°C,and its tribological behaviour and wear mechanism of surface build-up welding materials arerevealed. In initial stage of wear, friction temperature is lower and hard particles like AL2O3, SiO2,SiC, TiO in brake block plough the surface of brake-disc, oxide layer forms on friction surface withrise of friction temperature and its cracking and regenerating become a major way of wear, meanwhilehard grains in brake block slough off due to frequent ploughing and three-body abrasive wear occurs,and spalling of surface film is mainly caused by fatigue. In stage of high temperature wear,oxidization wear and plastic deformation of brake-disc increase greatly, brake-block starts to soften,severe adhesive wear occurs and spalling of surface film is mainly caused by adhesive tearing. Wearmechanism of brake-disc is comprehensive effects of abrasive, oxidizing and adhesive wear
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.535.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Research on Friction and Wear Performance of Brake Disc Pair Materials for New Type of Drilling Rig (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 438-441 
    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: Tribological performance of new brake pair is studied at different temperatures, load andspeed by variable temperature friction and wear test. The research indicates that brake pair hasbetter frictional characteristics at variable temperature as well as heat-fade resistance performance athigh temperatures. Wear rate of brake block and brake disc increases with friction temperaturerising, however wear-resisting performance of brake disc is comparatively stable. Load has lessinfluence on frictional coefficient of brake pair. Wear rate of brake disc and brake block increaseswith load increasing, but brake block has comparatively stable wear-resisting performance.Frictional coefficient of brake pair increases and tends to stabilize gradually along with slidingspeed increasing, and speed has less influence on wear rate of brake block and brake disc. Initialheat-fading occurs in brake block material along with frictional temperature rising, secondarysolidification may happen when frictional temperature reaches a certain value. When temperaturerises much higher, brake block begins to soften and plastic flow intensifies, in addition thermaldecomposition occurs in organic substance and wear-resisting performance becomes poorer.Build-up welding material has strong age-hardening effect and stable thermal structure, whichleaves surface hardness and structure performance of brake disc unchanged at high temperatures
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.438.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Novel dioximato-bridged chromium(III)-copper(II)-chromium(III) trinuclear complexes with ferromagnetic exchange interactions (1995)
    Springer
    Transition metal chemistry 20 (1995), S. 396-398 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Two new dioximato-bridged trinuclear CrII-CuII-CrIII complexes, [Cr(salen)-Cu(α-BD)2-Cr(salen)] (1) and [Cr(salen)-Cu(α-FD)2-Cr(salen)]-H2O (2), have been prepared and characterized [salen2− = N,N′-ethylene- bis (salicylideneiminate), (α-BD)2− = α-benzyldioximato and (α-FD)2− = α-furildioximato]. Magnetic susceptibility measurements in the 4.2–300 K range demonstrated the operation of a ferromagnetic interaction between the adjacent CrIII and CuII ions through oximato bridges in both (1) and (2). Based on spin Hamiltonians Ĥ=−2J(Ŝ1Ŝ2+Ŝ2Ŝ3)(S1=S3=3/2,S2=1/2) the exchange integrals (J) were evaluated as 3.19 and 5.38 cm−1 for (1) and (2), respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00139139
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  • 9
    Electronic Resource
    Electronic Resource
    Synthesis and magnetic properties of trinuclear nickel(II) complexes bridged by α-benzyldioximato groups (1997)
    Springer
    Transition metal chemistry 22 (1997), S. 42-45 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Four new NiII–NiII–NiII homotrinuclear complexes namely [Ni(α-BD)2{NiL2}](ClO4)2 [L = 1,10-phenanthroline (phen), 5-nitro-1,10-phenanthroline (5-NO2-phen), 2,2′-bipyridyl (bpy) or 4,4′-dimethyl-2,2′bipyridyl (Me2bpy) and (α-BD)− = α-benzyldioximato ion] have been prepared and characterized. Based on elemental analyses, i.r. spectra, conductivity measurements, extended α-benzyldioximato-bridged systems consisting of three nickel(II) ions in which the central nickel(II) ion has a square-planar environment and the end capped two nickel(II) ions have a distorted octahedral environment are proposed for these structures. The temperature dependence of the magnetic susceptibility for complexes (1) (phen), (2) (5-NO2-phen), (3) (bpy) and (4) (Me2bpy) were measured over the 77–300 K range and the observed data were successfully simulated by an equation based on the spin Hamiltonian operator (H^ = −2JS^1S^2), giving the exchange integral J = −13.31 cm−1 for (1), J = −7.37 cm−1 for (2), J = −8.96 cm−1 for (3) and J = −7.33 cm−1 for (4) These results indicate a weak antiferromagnetic spin exchange interaction between the two terminal nickel(II) io
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018417703144
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  • 10
    Electronic Resource
    Electronic Resource
    Synthesis and magnetic properties of trinuclear copper(II) complexes bridged by dimethylglyoximate groups (1995)
    Springer
    Transition metal chemistry 20 (1995), S. 72-75 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary New three CuII-CuII-CuII homotrinuclear complexes have been synthesized, namely [Cu(dmg)2{CuL}2](ClO4)2 [L = 5-nitro-1,10-phenanthroline (5-NO2-phen), 4,4′-dimethyl-2,2′-bipyridiine (DMbpy), tetramethylenediamine (TMDA) and dimethylglyoximate ion (dmg)2-]. The magnetic susceptibilities of complexes (1) (L = 5-NO2-phen) and (2) (L = DMbpy) were measured in the 4.2–300 K range, giving the parameters,J = -335cm-1 (1) andJ= -327.5cm-1 (2). The results demonstrate a very strong antiferromagnetic exchange interaction between the adjacent copper(II) ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00135406
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