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  • Chemical reactivity of silicon nitride with steel and oxidised steel between 500 and 1200°C
    Kalin, Mitjan ...
    ǂThe ǂchemical interaction of a Si3N4 ceramic with pristine and oxidised 100Cr6 steel was studied by means of static interaction couple experiments between 500 and 1200°C. Si3N4 was not chemically ... stable in contact with oxidised steel at elevated temperatures, and reacts with the formation of N2, SiO2 and/or Fe2SiO4 at temperatures at and above 1000°C. At 700 and 500°C, Si diffusion into the oxide layer indicated the dissociation of the Si3N4 ceramic. Si3N4 also dissociated in contact with pristine steel. In the temperature region between 700 and 1100°C, the Si dissolves and diffuses into the steel whereas a nitrogen pressure is built-up in the voids of the metal-ceramic interface, limiting the degree of interaction. Above 1100°C, the nitrogen dissolves and diffuses into the steel as well, enhancing the reactivity and resulting in the formation of a strong metal-ceramic interface.
    Vir: Materials Science & Engineering. A, Structural materials: Properties, Microstructure and Processing. - ISSN 0921-5093 (Vol. A281, issue 1/2, 2000, str. 28-36)
    Vrsta gradiva - članek, sestavni del
    Leto - 2000
    Jezik - angleški
    COBISS.SI-ID - 3609371

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