Sökning: "Cermet"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet Cermet.

  1. 1. Quality Management during Sintering of Cemented Carbides and Cermets

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Oorganisk kemi

    Författare :Josefin Sipola; [2015]
    Nyckelord :Sintering; Cemented Carbides; Cermets; Coercivity; weight-specific magnetic saturation; CoM;

    Sammanfattning : The magnetic properties, coercivity, Hc, and weight-specific magnetic saturation, CoM, are two important quality characteristics in cemented carbides and ceramic metals, cermets. These properties give information about grain size and binder phase content, and are influenced by the different stages in the sintering process. LÄS MER

  3. 2. CALPHAD study of cubic carbide systems with Cr

    Master-uppsats, KTH/Materialvetenskap

    Författare :Zhangting He; [2015]
    Nyckelord :CALPHAD; cubic carbide; thermodynamics;

    Sammanfattning : Cubic carbides (titanium, tantalum, niobium, and zirconium carbides) can constitute a significant proportion of so-called cubic and cermet grades, where it is added to substitute a portion of tungsten carbide. It is thus critical to understand and be able to thermodynamically model the cubic carbide systems. LÄS MER

  4. 3. Protective coatings for Al press tools used in automotive industry

    Magister-uppsats, Högskolan Väst/Avd för tillverkningsprocesser

    Författare :Ruoyo Tan; [2014]
    Nyckelord :Protective coating; HVAF; APS; Aluminium substrate; Wear resistance;

    Sammanfattning : The application of the thermally sprayed WC-Co and Cr 3C2-NiCr coatings have been widely used in industry for its superior sliding, abrasive and erosive wear properties. The Al2O3 coating possessing high hardness can be utilized to improve the wear resistance of the metallic surface. LÄS MER

  5. 4. Controlling Co-capping in sintering of cermets

    Uppsats för yrkesexamina på avancerad nivå, Oorganisk kemi

    Författare :Sven Englund; [2013]
    Nyckelord :Cermet; Co-capping; sintering;

    Sammanfattning : This master thesis includes a literature study and experimental work to understandthe conditions where a binder phase layer, Co-capping, could be produced orinhibited, for three different cermet grades in order to suggest changes in thesintering processes and two production units. The effect of C activity and sinteringatmosphere, e.g. LÄS MER

  7. 5. Method for determining phasedistribution and characteristic lenghts in cBN-composite materials.

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för kemi - Ångström

    Författare :Olof Gunneriusson; [2013]
    Nyckelord :cBN; characteristic lenght; SEM; phase distribution;

    Sammanfattning : An image analysis method has been developed for Sandvik to determine phasecompositions and characteristic length of the binding phase in cubic Boron Nitride(cBN)-composites with low contents of cBN (35-75%).The method consists of taking pictures with a Scanning Electron Microscope,gathering elemental data with X-ray Diffraction (XRD) as well as Energy-dispersiveX-ray Spectroscopy (EDS) and finally using a Matlab program developed for this workto calculate phase compositions and statistical data from the characteristic length ofthe binding phase. LÄS MER