Sökning: "phase formation"

Visar resultat 36 - 40 av 1238 avhandlingar innehållade orden phase formation.

  1. 36. Modelling phase separation in Fe-Cr alloys : A continuum approach

    Författare :Thomas Barkar; John Ågren; Nele Moelans; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase separation; spinodal decomposition; nucleation; diffusion; thermodynamics; kinetics; steel; ferritic;

    Sammanfattning : The formation of Cr-rich and Fe-rich domains upon ageing of an initially homogeneous Fe-Cr alloy at elevated temperatures (300-600 ºC) is commonly referred to as phase separation. The behaviour originates from a miscibility gap in the Fe-Cr phase diagram. LÄS MER

  3. 37. Kapitalbildning i svensk industri 1870-1930

    Författare :Svante Holmquist; Ekonomisk-historiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; total factor productivity; growth accounting; industry; investments; Capital formation; physical capital; Social and economic history; Ekonomisk och social historia;

    Sammanfattning : The significance of physical capital is often mentioned in general terms in economic history literature. In this study the amount of physical capital is calculated and its significance for industrial growth is analysed for the period 1870-1930. LÄS MER

  4. 38. The role of ice in planet formation

    Författare :Katrin Ros; Astrofysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Planetbildning; Protoplanetära skivor; Planet formation; Protoplanetary discs;

    Sammanfattning : As stars form, they are surrounded by a disc composed of gas, dust and ice – the protoplanetary disc, where solids grow from micrometre-sized dust to planets. Small dust grows readily by collisions. LÄS MER

  5. 39. Controlling the Formation and Stability of Alumina Phases

    Författare :Jon Martin Andersson; Ulf Helmersson; Eric Kay; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thin films; alumina; magnetron sputtering; phase stability; density functional theory; Material physics with surface physics; Materialfysik med ytfysik;

    Sammanfattning : In this work, physical phenomena related to the growth and phase formation of alumina, Al2O3, are investigated by experiments and computer calculations. Alumina finds applications in a wide variety of areas, due to many beneficial properties and several existing crystalline phases. LÄS MER

  7. 40. Interior Flow and Formation of Plain Orifice Sprays

    Författare :Zachary Falgout; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ballistic Imaging; Sprays; Fluid Mechanics; Mixture Formation;

    Sammanfattning : This thesis will summarize recent experimental observations of spray formation in highly atomizing plainorifce sprays, the kind commonly produced by fuel injectors in compression ignition internal combustionengines. Two special interactions will be addressed in detail: primary atomization under elevated ambientpressures and temperatures and orifce ow effects on primary atomization. LÄS MER