Sökning: "Ferroelectric ceramics"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Ferroelectric ceramics.

  1. 1. Nano and Grain-Orientated Ferroelectric Ceramics Produced by SPS

    Författare :Jing Liu; Zhijian Shen; Pavol Sajgalik; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nano microstructure; grain-orientated microstructure; ferroelectric ceramics; Spark Plasma Sintering; Inorganic chemistry; Oorganisk kemi; oorganisk kemi; Inorganic Chemistry;

    Sammanfattning : Nano-powders of BaTiO3, SrTiO3, Ba0.6Sr0.4TiO3, a mixture of the composition (BaTiO3)0.6(SrTiO3)0. LÄS MER

  3. 2. Local structure of perovskite ferroelectric ceramics as revealed by 3D electron diffuse scattering : A walk in between the Bragg peaks

    Författare :Alexandra Neagu; Cheuk-Wai Tai; Gunnar Svensson; Kenji Kaneko; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron diffraction; Diffuse scattering; Local structural disorder; Perovskite; Ferroelectric ceramics; Transmission electron microscopy; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Local structural disorder in crystalline materials plays a crucial role in understanding their properties. The means to study structural disorder is diffuse scattering (DS). LÄS MER

  4. 3. High density ferroelectric Na0.5K0.5NbO3 ceramics : preparation and applications

    Författare :Johanna Andreasson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Materials; Materialteknik;

    Sammanfattning : This thesis describes the production of high density ferroelectric Na0.5K0.5NbO3-ceramics (NKN). The main steps in the production are milling, calcination, pressing and sintering. LÄS MER

  5. 4. Spark Plasma Sintering Enhancing Grain Sliding, Deformation and Grain Size Control : Studies of the Systems Ti, Ti/TiB2, Na0.5 K0.5 NbO3, and Hydroxyapatite

    Författare :Mirva Eriksson; Zhijian Shen; Takashi Goto; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spark plasma sintering; plastic deformation; grain growth; titanium; TiB2; hydroxyapatite; Na0.5K0.5NbO3; ferroelectric; transparent; Materials chemistry; Materialkemi; Materials Chemistry; materialkemi;

    Sammanfattning : The unique features of the Spark plasma sintering (SPS) were used to investigate the sintering and deformation behaviour of titanium and titanium–titanium diboride composites, and to control the sintering and grain growth of ferroelectric Na0.5K0.5NbO3 (NKN) and of hydroxyapatite (HAp). LÄS MER

  7. 5. Physics of piezoelectric shear mode inkjet actuators

    Författare :Jürgen Brünahl; KTH; []
    Nyckelord :;

    Sammanfattning : This thesis describes work on piezoelectric shear modeactuators used in dropon- demand ink printing applications.These actuators comprise an array of ink channels micromachinedinto bulk Pb(ZrxTi1-x)O3(PZT) ceramics. LÄS MER