Sökning: "Weimin Cao"

Hittade 2 avhandlingar innehållade orden Weimin Cao.

  1. 1. Theoretical and experimental studies of surface and interfacial phenomena involving steel surfaces

    Författare :Weimin Cao; Seshadri Seetharaman; Oleg Ostrovski; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sulfur; Oxygen; Adsorption; Iron surface; ab initio calculations; Adsorption energy; Work function; Difference charge density; Magnetic properties; Thermodynamic stability; Average velocity; Monte Carlo simulation; X-ray sessile drop method; Mass transfer; Interfacial velocity; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning : The present work was initiated to investigate the surface- and interfacial phenomena for iron and slag/iron systems. The aim was to understand the mechanism of the effect of surface active elements on surface and interfacial properties. LÄS MER

  3. 2. Adsorption of surface active elements on the iron (100) surface : A study based on ab initio calculations

    Författare :Weimin Cao; Seshadri Seetharaman; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sulfur; oxygen; surface adsorption; iron surface; ab initio calculations; adsorption energy; work function; difference charge density; thermodynamic stability; average velocity; Materials science; Teknisk materialvetenskap;

    Sammanfattning : In the present work, the structural, electronic properties, thermodynamic stability and adatom surface movements of oxygen and sulfur adsorption on the Fe surface were studied based on the ab initio method. Firstly, the oxygen adsorbed on the iron (100) surface is investigated at the three adsorption sites top, bridge and hollow sites, respectively. LÄS MER