Sökning: "silicon-nitride"

Visar resultat 11 - 15 av 60 avhandlingar innehållade ordet silicon-nitride.

  1. 11. Silicon Nitride Based Coatings Grown by Reactive Magnetron Sputtering

    Författare :Tuomas Hänninen; Hans Högberg; Susann Schmidt; Lars Hultman; Arutiun P. Ehiasarian; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Silicon nitride and silicon nitride-based ceramics have several favorable material properties, such as high hardness and good wear resistance, which makes them important materials for the coating industry. This thesis focuses the synthesis of silicon nitride, silicon oxynitride, and silicon carbonitride thin films by reactive magnetron sputtering. LÄS MER

  3. 12. Silicon nitride-based materials for spinal and antipathogenic applications

    Författare :Ioannis Katsaros; Håkan Engqvist; Hanna Tiainen; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Silicon nitride (Si3N4) is a ceramic material that is well-established in industrial applications due to its stability in demanding environments. The mechanical properties and biocompatibility of the material have led to its approval for clinical use in spinal implants. LÄS MER

  4. 13. The Microstructure of Metal Oxide Additive Silicon Nitride Ceramics

    Författare :Maria Knutson Wedel; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microstructure; SEM; HIP; TEM; ZrO2; Si3N4;

    Sammanfattning : This work is concerned with Si3N4 ceramics fabricated with different metal oxide additives, viz. Y2O3, Al2O3, ZrO2 and ZrO2(+3 mol% Y2O3), which have been densified by hot isostatic pressing (HIP). LÄS MER

  5. 14. Force measurements using scanning probe microscopy : Applications to advanced powder processing

    Författare :Anders Meurk; KTH; []
    Nyckelord :atomic force microscope; AFM; SPM; van der Waals interaction; DLVO-theory; surface forces; colloidal probe; force curve; friction; adhesion; stick-slip; cantilever; calibration; spring constant; silicon nitride; iron; silica;

    Sammanfattning : The object of this thesis is to apply scanning probemicroscopy (SPM) to the field of advanced powder processing.Measurement of interparticle surface forces at conditionsrelevant to ceramic processing has been performed together withthorough studies of powder friction. LÄS MER

  7. 15. Formation of silicon nitride based materials by nitridation and sintering

    Författare :Alena Ashkin; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materialteknik; Engineering Materials;

    Sammanfattning : Todays demands on silicon nitride based materials for structural applications focus on microstructures rendering high strengths and reliability at reasonable costs. This work was mainly aimed at production of sialons for these types of applications by nitridation with subsequent sintering. LÄS MER