Search for dissertations about: "Alloying"

Showing result 1 - 5 of 266 swedish dissertations containing the word Alloying.

  2. 1. Role of alloying elements in Mo5Si3 intermetallics

    Author : Erik Ström; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microhardness; silicide; alloying; ternary; intermetallic; Laves; hardness; high temperature material; Mo5Si3;

    Abstract : The role of alloying elements in the intermetallic compound Mo5Si3 was studied in the alloying systems Mo5-xMxSi3 (M = Cr, Ti, Nb, Ni, or Co, x = 0.5-2). The effects of the alloying elements were examined by characterising the microstructures and identifying the resulting phases. In the case of Cr and Nb alloying, a solubility of 25% (at. READ MORE

  4. 2. Microstructure and high temperature properties of Mo(Si,Al)2 - The effect of particle strengthening and alloying

    Author : Aina Edgren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microstructure; particle strengthening; Mo Si; Al 2; oxidation; alloying; high temperature mechanical properties;

    Abstract : High temperature heating processes within the steel industries result in significant emissions of CO2, primarily due to the combustion of fossil fuels. Electrification of these processes, such as through the implementation of resistive heating elements, holds great promise for reducing emissions. READ MORE

  5. 3. Experimental and theoretical study of carbides in the Co-Cr-C system : Structure, alloying and stability

    Author : Bartek Kaplan; Malin Selleby; Jan Qvick; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk materialvetenskap; Materials Science and Engineering;

    Abstract : The research presented in this thesis explores the structure, alloying and stability of the carbides in the Co-Cr-C system by using the CALPHAD approach supported by experimental measurements and ab initio calculations.WC-Co based cemented carbide materials consist of hard WC grains and a ductile Co-based binder. READ MORE

  6. 4. Oxidation and Reconstructions of Alloy Model Catalysts : Platinum-Rhodium and Palladium-Gold

    Author : Helen Edström; Synkrotronljusfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Alloying; APXPS; Bimetallic Catalysts; Heterogeneous Catalysis; HESXRD; Oxidation; Oxide Formation; Palladium-Gold; Platinum-Rhodium; Surface Reconstruction; Fysicumarkivet A:2023 Edström;

    Abstract : Alloys and bimetallic systems have shown many advantages in heterogeneous catalysis, but the details of their catalytic functions are not always known. For instance, the atomic details about surface reconstructions under catalytic reaction conditions, or which phases that are high-active or low-active. READ MORE

  7. 5. Alloying effects in Molybdenum silicides

    Author : Danqing Yi; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : .... READ MORE