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  • 1
    Electronic Resource
    Electronic Resource
    Bradford : Emerald
    Industrial lubrication & tribology 53 (2001), S. 61-65 
    ISSN: 0036-8792
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Dry sliding of different components over each other results in changes of interfaces. During the running-in procedure a surface accommodation takes place. There is transfer of material from the softer to the harder component. At the surface of a composite a friction layer is formed, which has a different chemistry than the matrix. Type of friction layer and transfer layer govern the tribological performance of a dry sliding system. In order to arrive at desired frictional properties various additives are added to composites. Change of tribological performance by use of solid lubricants in dry bearings, carbon brushes and brake linings is discussed.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0036-8792
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In electrical motors electrical energy is transformed into mechanical energy or vice versa. Electrical energy has to be transferred from a stationary component into a moving one, which is done by a copper commutator in sliding contact with carbon brushes. Wear occurs at surfaces of both components during dry sliding. To reduce friction and wear rate, solid lubricants are added to the carbon brush compositions. It was observed that, during sliding, a solid lubricant film is formed on the surface of the copper commutator. This transfer film has a limited life. After failure of the layer a new film is formed from the reservoir of the carbon brushes. Various solid lubricants in carbon brushes were tested. It was found that certain solids form very thin layers with good adhesion on commutator surfaces, which improves tribological performance of both moving components. In particular, wear rate, friction and noise are reduced significantly. This resulted in much longer service life of electrical motors for automotive applications.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 26 (1970), S. 1915-1919 
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 4
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    In:  CASI
    Publication Date: 2014-09-11
    Description: A new generation of lubricating lacquers for treatment of metal surfaces has been developed. These coatings have proved to be oil-compatible and are used in oil-lubricated systems. The oil lubrication is supported thereby through reduction of friction and increase of load-carrying capacity during boundary conditions. For difficult tribological systems, the problem-solving lubricating concept has proved to be the beneficial combination of lubricating oil and bonded coatings. A number of practical applications are presented.
    Keywords: NONMETALLIC MATERIALS
    Type: NASA Lewis Research Center Tribology in the 80's, vol. 2; p 709-721
    Format: text
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 406 (1974), S. 69-73 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: IR Spectra of Aqueous Solutions of Metal ChloridesAqueous solutions of the chlorides of some monovalent and divalent metals have been investigated by IR-Spectroscopy. The spectra are registered as a function of the concentration of these solutions. The solutions of monovalent metal chlorides show no variations of the deformation band and the valence band to pure water. In solutions of divalent metal chlorides the positions of the bands are dependent on the concentration of solution.
    Notes: Es wurden IR-Spektren wäßriger Lösungen von Chloriden ein-und zweiwertiger Metalle in Abhängigkeit von der Konzentration der Lösungen untersucht. Bei den Lösungen von Chloriden einwertiger Metalle sind die Lagen von Deformationsbande und Valenzbande gegenüber dem reinen Wasser unverändert, während sie in den Lösungen der Chloride zweiwertiger Metalle von der Konzentration der Lösung abhängen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 406 (1974), S. 62-68 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydrogen Bondings in α-KZnBr3 · 2 H2OThe positions of the hydrogen atoms and the system of hydrogen bondings in the crystal structure of α-KZnBr3 · 2 H2O are discussed. The hydrogen atoms have been located by FOURIER difference synthesis. IR-spectra have given some information about the strength of the various hydrogen bondings O—H … H and O—H … Br.
    Notes: Die Lagen der Wasserstoffatome und die Wasserstoffbrücken-bindungen in der Kristallstruktur des α-KZnBr3 · 2 H2O werden diskutiert. Die Lage der Wasserstoffatome wurde durch eine Differenz-FOURIER-Synthese bestimmt. Die IR-Spektren ermöglichen Aussagen über die Stärke der verschiedenen Wasserstoffbrücken-bindungen O—H … O und O—H … Br.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 54 (1967), S. 441-441 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 8
    Publication Date: 1967-08-01
    Print ISSN: 0028-1042
    Electronic ISSN: 1432-1904
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
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