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  • Articles  (68)
  • 2010-2014  (7)
  • 1995-1999  (50)
  • 1920-1924  (11)
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  • Articles  (68)
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  • 1
    Electronic Resource
    Electronic Resource
    Infrared Analysis of Boron Nitride Thin Films (1998)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 287-288 (Aug. 1998), p. 269-270 
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/03/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.287-288.269.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Tribological properties of chromium implanted silicon nitride ceramics correlated with microstructure (1997)
    Springer
    Applied physics 65 (1997), S. 281-286 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 81.40; 61.80; 62
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 3 N4 ceramic after chromium implantation were investigated for the dependence on implantation energy between 200 keV and 3 MeV at a fixed fluence of 1017 ions/cm2. The wear of the modified material is reduced for a load of 2 N independent of ion energy accompanied by a slight increase of the friction coefficient. At higher loads only high-energy implantations result in improved wear behaviour. Structural investigations show the absence of any new phases formed by ion implantation. All energies result in an amorphous layer. For lower energies this amorphous layer reaches up to the surface whereas at higher energies it is covered by still-crystalline but damaged material. The observed wear behaviour can be explained with the amorphization of the near surface region and the stress generated by the volume swelling of the amorphous layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050579
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  • 3
    Electronic Resource
    Electronic Resource
    Structure of Laser-Deposited Fe/Al Multilayers (1998)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 287-288 (Aug. 1998), p. 455-458 
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/03/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.287-288.455.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    The interplay of sputtering and oxidation during plasma diffusion treatment (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 1851-1853 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Metals that form dense native surface oxide layers challenge plasma diffusion treatment techniques. Experimental results obtained during nitriding of stainless steel from real-time depth-resolved compositional analysis by elastic recoil detection give insight into the transport kinetics. In agreement with semiquantitative considerations on the oxide removal and the oxide growth, the interplay of sputtering and oxidation emerges as a key parameter. On this background, suggestions for practical applications and optimization of the modification processes are given for different plasma diffusion treatment techniques. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.124849
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  • 5
    Electronic Resource
    Electronic Resource
    Roughness improvement and hardness enhancement in nanoscale Al/AlN multilayered thin films (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 71 (1997), S. 1951-1953 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Al/AlN multilayered thin films with periodic thickness λ less than 24 nm were developed by ion beam assisted deposition. A considerably small surface roughness comparable to that of the silicon substrate and much smaller than those of both monolithic Al and AlN films was obtained. Over the investigated range of λ, all the multilayers are harder than the homogeneous AlN film, and a significant hardness enhancement by a factor of ∼2 over that of the AlN film was observed in the multilayer with λ of 6 nm. Moreover, the hardness enhancement is not at the expense of the multilayer toughness, with the multilayer Al/AlN films showing improved plasticity as compared with the AlN film. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.119752
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  • 6
    Electronic Resource
    Electronic Resource
    Phase identification of boron nitride thin films by polarized infrared reflection spectroscopy (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 46-48 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Six different types of boron nitride films were investigated by polarized infrared reflection spectroscopy. Films with a highly cubic, mixed cubic and noncubic, and exclusively noncubic phase composition were synthesized using ion beam assisted deposition. Additionally, postdeposition argon ion irradiated cubic and noncubic boron nitride films as well as a nitrogen implanted boron sample were analyzed. Using this technique, besides the cubic phase, two different noncubic modifications, layered anisotropic and amorphous, could be distinguished. A preferential orientation of the normal axis of the sp2-bonded basal planes parallel to the substrate surface was observed. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118113
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  • 7
    Electronic Resource
    Electronic Resource
    Die Adsorption des Formaldehydes durch Tierkohle (1921)
    Springer
    Colloid & polymer science 28 (1921), S. 127-132 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Zusammenfassung 1. Formaldehyd wird durch Tierkohle sowohl in saurer als auch in neutraler Lösung in bedeutendem Maße adsorbierl. 2. Die Adsorption sowohl in neutralisierter als auch saurer Lösung folgt den Adsorptionsgesetzen, d. h. die Adsorption ist abhängig von der Konzentration. 3. Die Adsorption des Formaldehydes durch die Tierkohle in saurer Lösung ist ferner in weitgehenstem Maße von dem Volum abhängig. Aus großem Volum wird erheblich mehr, als aus kleinem Volum bei gleicher Konzentration adsorbiert. 4. In neutraler Lösung wird die Adsorption des Formaldehydes unabhängig von dem Volum und ist lediglich abhängig von der dargebotenen absoluten Menge des Formaldehydes bezw. der Konzentration. 5. Die Adsorption in neutraler Lösung ist unabhängig von der Zeit und tritt das Gleichgewicht nach kurzer Einwirkungsdauer ein. Die Adsorption aus saurer Lösung ist abhängig von der Zeit und tritt selbst nach 8 tägiger Einwirkung kein Gleichgewicht ein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01427881
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  • 8
    Electronic Resource
    Electronic Resource
    Structural investigations of laser-deposited Fe/Al multilayers (1999)
    Springer
    Applied physics 68 (1999), S. 497-503 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 68.55.-a
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Fe/Al multilayers are prepared by crossed-beam pulsed laser deposition and investigated by Rutherford backscattering, conversion electron Mössbauer spectroscopy, and transmission electron microscopy. The results are compared to purely ballistic simulations of the deposition process using the TRIDYN4.0 code. It is found that the intermixing of adjacent layers must be described in terms of ballistic mixing followed by chemical mixing. The phase formation in the transition layer between adjacent layers follows the non-equilibrium behavior of Fe/Al in analogy to investigations on mechanically alloyed and ion-beam-mixed Fe/Al. In Fe-rich areas a bcc solid solution is formed. In Al-rich environment an amorphous phase is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050932
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  • 9
    Electronic Resource
    Electronic Resource
    Die Gerinnungserscheinungen in Gelatine-Chlornatriumlösungen (1921)
    Springer
    Colloid & polymer science 28 (1921), S. 281-290 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Zusammenfassung 1. Es wurde der Gerinnungswert verdünnter, mit Chlornatrium gesättigter Gelatinelösungen durch Säuren ermittelt. 2. Der Gerinnungswert steigt mit dem Dissoziationsgrad der Säure und ist demnach bei anorganischen Säuren größer, wie bei organischen. 3. Das Maximum der Gerinnung der daran beteiligten Trockensubstanz der Gelatinelösung durch irgendeine Säure liegt bei einer ganz bestimmten Konzentration. 4. Neben der Gerinnung finden Adsorptionserscheinungen zwischen dem geronnenen Teil und der Säure in Verbindung mit den nicht der Gerinnung fähigen Anteilen statt. 5. Die Erscheinungen wurden nach der Mizellar-Hypothese von Nägeli's erklärt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01464428
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  • 10
    Electronic Resource
    Electronic Resource
    Die Gerbung der Gelatine durch Formaldehyd (1921)
    Springer
    Colloid & polymer science 29 (1921), S. 45-55 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Zusammenfassung Die Gerbung der Gelatine ist ein zweiphasiger Vorgang. Die eigentliche Gerbung des gerbfähigen Anteiles ist physikalischer Natur und an diesem nimmt nur der gerinnbare Anteil der Gelatine teil. Der nicht gerinnbare Anteil der Gelatine tritt mit dem Formaldehyd in chemische Wechselwirkung unter Bildung von Methylenaminosäuren. Die der Gerbung fähige Menge der Gelatine entspricht dem Gerinnungswert der unbehandelten Gelatine Wird der gerinnbare Anteil durch Hydrolyse infolge Wasserstoffionenwirkung vermindert, so wird auch der gerbfähige Anteil dadurch vermindert. Die gerbenden Bestandteile der Formaldehydlösung sind die unlöslichen kolloiden Polymeren des Formaldehydes, die in der Hauptsache erst während der Einwirkung auf die Gelatine entstehen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425137
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