Search for dissertations about: "Spark plasma sintering SPS"

Showing result 1 - 5 of 12 swedish dissertations containing the words Spark plasma sintering SPS.

  1. 1. Spark Plasma Sintering of Si3N4-based Ceramics Sintering mechanism-Tailoring microstructure-Evaluationg properties

    University dissertation from Stockholm : Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

    Author : Hong Peng; Zhijian (James) Shen; Mats Nygren; Michael J. Hoffmann; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; spark plasma sintering; silicon nitride ceramics; grain growth kinetic; superplasiticity; liqiud phase sintering; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi;

    Abstract : Spark Plasma Sintering (SPS) is a promising rapid consolidation technique that allows a better understanding and manipulating of sintering kinetics and therefore makes it possible to obtain Si3N4-based ceramics with tailored microstructures, consisting of grains with either equiaxed or elongated morphology. The presence of an extra liquid phase is necessary for forming tough interlocking microstructures in Yb/Y-stabilised α-sialon by HP. READ MORE

  2. 2. 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

    University dissertation from Stockholm : Department of Materials and Environmental Chemistry, Stockholm University

    Author : Mirva Eriksson; Zhijian Shen; Takashi Goto; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spark plasma sintering; plastic deformation; grain growth; titanium; TiB2; hydroxyapatite; Na0.5K0.5NbO3; ferroelectric; transparent; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Materials chemistry; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Materialkemi; materialkemi; Materials Chemistry;

    Abstract : 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). READ MORE

  3. 3. Functionalization and processing of porous powders into hierarchically porous monoliths

    University dissertation from Stockholm : Department of Physical, Inorganic and Structural Chemistry, Stockholm University

    Author : Petr Vasiliev; Lennart Bergström; Yoshio Sakka; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Porous; zeolite; hierarchical; monolith; nanoparticle; functionalization; amorphization; PCP; SPS; pulsed current processing; spark plasma sintering.; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; oorganisk kemi; Inorganic Chemistry;

    Abstract : Inorganic porous materials are widely used in a number of applications, where is a need to functionalize and produce materials with a multiscale porosity. The first part of the thesis describes how a novel and facile powder processing approach, using pulsed current processing (PCP) or, as it is commonly called, spark plasma sintering (SPS), has been employed to produce mechanically stable, hierarchically porous bodies from different porous powders. READ MORE

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

    University dissertation from Stockholm : Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

    Author : Jing Liu; Zhijian Shen; Pavol Sajgalik; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nano microstructure; grain-orientated microstructure; ferroelectric ceramics; Spark Plasma Sintering; NATURAL SCIENCES Chemistry Inorganic chemistry; NATURVETENSKAP Kemi Oorganisk kemi; oorganisk kemi; Inorganic Chemistry;

    Abstract : Nano-powders of BaTiO3, SrTiO3, Ba0.6Sr0.4TiO3, a mixture of the composition (BaTiO3)0.6(SrTiO3)0. READ MORE

  5. 5. Spark Plasma Sintered 3Y-TZP/CNT composites

    University dissertation from Luleå tekniska universitet

    Author : Latifa Melk; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materialteknik; Engineering Materials;

    Abstract : Composites of 3 mol% yttria-doped tetragonal zirconia (3Y-TZP) reinforced with multiwalled carbon nanotubes (MWCNT) up to 2 wt% have been produced using spark plasma sintering (SPS). The theoretical densities of the studied composites were found to be between 99.4 and 97.4 %. READ MORE