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  • 1975-1979  (7)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Heat-resistant Fe–Cr alloy with polycarbosilane as binder (1976)
    [s.l.] : Nature Publishing Group
    Nature 264 (1976), S. 237-238 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Polycarbosilane (PC) is prepared as follows: suitable quantities of metallic sodium and xylene are mixed, and then heated to 110 C in a stream of inert gas. Dimethyl-dichlorosilane is then added. The chlorine in the dimethy-dichlorosilane reacts with sodium on stirring, producing sodium chloride. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/264237a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    SiC and Si 3 N 4 sintered bodies with new borodiphenylsiloxane polymers as binder (1977)
    [s.l.] : Nature Publishing Group
    Nature 266 (1977), S. 522-524 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 Sintering conditions and properties of the sintered bodies Matrix Step Conditions Apparent density (g cm3) Flexural strength (MN m-2) Fig Sic A Heating at 100 C h"1, keeping at 1000 C for 1 h; N2 gas flow 2.55 80 a B Rapid heating, keeping at 1700 C for 1 h; 1.8 MPa Ar 2.43 109 b ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/266522a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    SiC sintered bodies with three-dimensional polycarbosilane as binder (1976)
    [s.l.] : Nature Publishing Group
    Nature 264 (1976), S. 238-239 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The SiC powders used are 99.99% pure ?-SiC, with an average particle size of 3 /*m. To these are added 10% by weight of polycarbosilane (PC)6,7 with an average molecular weight of 800 dissolved in a suitable quantity of n-hexane, which is then removed by evaporation. Particles 10304mm in size ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/264238a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Anomalous characteristics of the microcrystalline state of SiC fibres (1979)
    [s.l.] : Nature Publishing Group
    Nature 279 (1979), S. 706-707 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 shows a chemical analysis of the SiC fibre obtained after heat-treatment (1,300 C) of the precursor fibre. Its atomic ratio is Si : C : O : H = l : 1.46:0.36:0.03. Table 1 shows that the SiC fibre contains appreciable amounts of carbon and of oxygen which had been introduced by the heating ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/279706a0
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Ln-M-O glasses obtained by rapid quenching using a laser beam (1978)
    Springer
    Journal of materials science 13 (1978), S. 1006-1014 
    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 A rapid quenching apparatus employing a laser beam was developed to obtain the glassy state of oxides which have high melting temperatures. Using this apparatus, the glassy state in Ln-Ti-O, Ln-Nb-O and Ln-Ta-O (Ln=lanthanides) systems was investigated. The range of compositions which produced glasses and the crystallization process were studied in detail, and the metastable phases, which appear during the crystallization process, were examined by differential thermal and X-ray diffraction analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00544695
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The crystallization of Gd2 3 -Al2O3 glasses (1979)
    Springer
    Journal of materials science 14 (1979), S. 823-830 
    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 Glasses of Gd2O3 · x Al2O3 compositions where x represents 5/3, 4 and 6, were prepared using a rapid quenching apparatus and a laser beam. The crystallization process of the glasses was studied by means of differential thermal analysis (DTA), X-ray diffraction analysis and electron microscopy. The crystallizations of Gd2O3 · 5/3Al2O3, Gd2O3 · 4Al2O3 and Gd2O3 · 6Al2O3 are complex and exhibit one, two and three exothermic peaks in DTA measurement with increasing Al2O3 concentration, respectively. The crystallization process of Gd2O3 · 5/3Al2O3 glass involved the direct formation of the gadolinium aluminium garnet, 3Gd2O3 · 5l2 3 (GdAG), which is not obtained by the ordinary solid phase reaction. After crystallization of Gd2O3 · 4Al2O3 and Gd2O3 · l2 3 glass, both phases become a mixture of Gd2O3 · Al2O3 (perovskite type) and α-Al2O3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00550713
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    An organo-metallic polymer used in powder metallurgy: The effect of polycarbosilane in iron-chromium alloy (1977)
    Springer
    Journal of materials science 12 (1977), S. 1834-1840 
    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 A new material was developed by introducing an organo-metallic polymer into powder metallurgy. In the uniform mixture of Fe- 13Cr* alloy powder and polycarbosilane (PC) usingn-hexane, the Fe-13Cr particles were coated with PC. The product of Fe-13Cr + 10wt% PC, obtained by hot-pressing the mixture, was subjected to an oxidation test, high-temperature hardness measurement and a wear resistance test, and found to be superior in all respects to that without the PC addition. The structure was observed by transmission electron microscope and it was found that grains of CrSi2 and Cr7 C3 about 0.1μm in size, dispersed uniformly in the Fe-13Cr + 10% PC, contributed to improvement of the mechanical properties. Observation by scanning electron microscope showed some difference in the formation of the oxidation film between Fe-13Cr and Fe-13Cr+10% PC. This new alloy, while adding an organo-metallic polymer to powder metallurgy, has several outstanding features with the possibility of many applications in the future.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00566243
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    Paper (German National Licenses)
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