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  • 1
    Electronic Resource
    Electronic Resource
    Effects of Annealing Condition on the Preparation of Indium-Tin Oxide (ITO) Thin Films via Sol-Gel Spin Coating Process (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 492-493 (Aug. 2005), p. 325-330 
    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: Indium tin oxide (ITO) thin films were deposited on glass substrates via sol-gel spin coating process from a mixed solution of Indium (Ⅲ) acetylacetonate and Tin (Ⅳ) iso-propoxide. Then, ITO thin films were fired at 500℃, and then annealed at 500℃ for 30 min with the sequential annealing process; Vacuum[removed info]N2[removed info]Ar/H2, N2[removed info]Ar/H2 and Ar/H2 gas. The effects of the different annealing processes on the surface morphologies and sheet resistance of ITO thin films were investigated. Sheet resistance values of ITO thin films treated under Vacuum[removed info]N2[removed info]Ar/H2,N2[removed info]Ar/H2 and Ar/H2 annealing process were 1.25 kohm/sq., 3.18 kohm/sq. and 4.92 kohm/sq., respectively. Actually, the sequential atmosphere gases and non-oxidizing gas, which were used in annealing process influenced the microstructural features or surface morphologies of ITO thin films: grain size and surface roughness. Thus, it was presumed that the sequential annealing condition influenced the densification behavior in the microstructural evolution of ITO thin films
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/10/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.492-493.325.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    The contributions of microstructural characteristics and residual stress distribution to mechanical properties of AlN/W composite system (1998)
    Springer
    Journal of materials science 33 (1998), S. 707-712 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract AlN–W composites were fabricated by pressureless sintering. The residual stress and mechanical properties were investigated for AlN–W composites with different tungsten contents. The fracture strength decreased and the fracture toughness increased with increase of the tungsten phase from 5 vol% to 20 vol%. It was thought that the decrease of strength would be due to the effects of relative density and the grain boundary phases. The crack tortuosity of indented specimens was gradually marked as a function of secondary phase content. In the residual stress measurement, the matrix phase of composites exhibited compressive stress distribution, which was increased with the addition of tungsten. This tendency was consistent with the results predicted by the thermoelastic stress model. From the results of the crack propagation path and the development of fracture toughness, it was thought that the residual compressive stress of matrix phase must have contributed to the development of crack propagation resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004341829129
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    Paper (German National Licenses)
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