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  • 1
    Electronic Resource
    Electronic Resource
    Effect of angle of incidence on the combined erosion-oxidation attack of nickel and cobalt (1990)
    Springer
    Oxidation of metals 34 (1990), S. 47-70 
    Details
    ISSN: 1573-4889
    Keywords: erosion ; oxidation ; angle of incidence ; nickel ; cobalt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The combined erosion-oxidation of cobalt and nickel at 600 and 780°C over a range of particle-impact angles has been studied by using weight change vs. time measurements and extensive morphological and microstructural characterization of exposed specimens. The oxidation process has been found to affect the angular dependence of the degradation rates. The effect is especially significant at low-impact angles where ripples and flakes are developed upon the surfaces of specimens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00664339
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Interaction between erosion and high-temperature corrosion of metals: The erosion-affected oxidation regime (1990)
    Springer
    Oxidation of metals 34 (1990), S. 23-45 
    Details
    ISSN: 1573-4889
    Keywords: erosion ; oxidation ; high-temperature corrosion ; interactions ; nickel ; cobalt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The combined erosion-oxidation of nickel, cobalt, and the oxides of these metals have been studied at 780°C in air to examine two regimes of interactionnamely, a regime of erosion-enhanced oxidation during which an oxide scale of constant thickness covers metal specimens, and a regime of oxidation-affected erosion that is characterized by a composite surface layer of metal, oxide, and erodent. In the case of cobalt, these two regimes have been documented and the transition from one regime to another described. For the range of conditions examined, only the oxidation-affected erosion regime was observed for nickel due to its lower oxidation rate compared to cobalt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00664338
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    From bone lining cell to osteocyte - an SEM study (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 209 (1984), S. 29-39 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: We describe the SEM appearance of the rat endosteal bone lining cell (BLC) population, and the sequence of morphological changes of these cells as they self-incorporate into unmineralized bone matrix (osteoid), establish intercellular connections, and construct lacunae. The osteoblast/nascent osteocyte series was progressively unsheathed by gentle digestion of the osteoid with 0.25% collagenase. The osteoblasts which leave the polygonally packed BLC compartment rapidly develop numerous complexly branched processes that contact the processes elaborated by previous generations of maturing and mature osteocytes. As osteoblasts mature and approach the mineralization front, they appear to lose processes. The mature cells begin to form osteocyte lacunae by depositing an asymmetric perimeter of woven collagen fibrils, such that as the cells roof-over, the lacunae appear as pocketlike constructions. The collagen fibrils on the perilacunar matrix are oriented in a tangential or circular pattern, while those in the more distal matrix are arranged in a parallel pattern. With the completion of a lacuna, its wall appears to mineralize quickly, for lacunae could be recognized only when they are forming.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1092090105
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    Paper (German National Licenses)
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