Sökning: "iron-based"

Visar resultat 16 - 20 av 44 avhandlingar innehållade ordet iron-based.

1. 16. High Temperature Corrosion in Fluidised Bed Environment

   Författare :Anna Nafari; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFB; coatings; Ni and iron based alloys; HCl; SO2; loop seal; High temperature corrosion; erosion corrosion test rig; surface characterization and temperature gradient;

   Sammanfattning : Successful material selection for power plants is the result of understanding the environment in each boiler. The boiler environment is affected by fuel chemistry, co-firing, process control and deposits as well as boiler type, design, size and load. LÄS MER

3. 17. New strategies for characterizing Prussian blue analogues

   Författare :Ida Nielsen; William Robert Brant; Andrew Kentaro Inge; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Prussian blue analogues; positron annihilation lifetime spectroscopy; Mössbauer spectroscopy; sodium-ion batteries; neutron diffraction; octahedral tilting; sodium iron hexacyanoferrate; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

   Sammanfattning : Prussian blue analogues (PBAs), AxM[M’(CN)6]1–y·zH2O, are used in many different applications, such as energy storage, due to their tunable composition and structural diversity. To understand the material properties, it is important to accurately determine the composition and atomic structure of these materials. LÄS MER

4. 18. On the shrinkage of metals and its effect in solidification processing

   Författare :Anders Lagerstedt; Hasse Fredriksson; Alec Mitchell Mitchell; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; material science; mechanical engineering; metallurgy; Materialvetenskap; Materials science; Teknisk materialvetenskap;

   Sammanfattning : The shrinkage during solidification of aluminium and iron based alloys has been studied experimentally and theoretically. The determined shrinkage behaviour has been used in theoretical evaluation of shrinkage related phenomena during solidification. Air gap formation was experimentally studied in cylindrical moulds. LÄS MER

5. 19. Studies on Metalloenzymatic Dynamic Kinetic Resolutions and Iron-Catalyzed Reactions of Allenes

   Författare :Karl P. J. Gustafson; Jan-Erling Bäckvall; Johannes de Vries; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Racemization; Dynamic Kinetic Resolution; Enzyme Catalysis; XAS; Asymmetric Synthesis; organisk kemi; Organic Chemistry;

   Sammanfattning : The main focus of this thesis lies in the development of new transition metal-catalyzed chemoenzymatic dynamic kinetic resolutions (DKR) of both alcohols and amines. The first part of the thesis deals with the development of new heterogeneous systems for the DKR of amines. LÄS MER

7. 20. Sintering of water-atomized iron and low-alloyed steel powder

   Författare :Johan Wendel; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reduction kinetics; water-atomized steel powder; water-atomized iron powder; sintering; oxide reduction; surface analysis; dilatometry; surface chemistry; thermogravimetric analysis;

   Sammanfattning : Iron and steel powder grades are extensively used in the powder metallurgy (PM) industry for manufacturing of ferrous structural components, with a major customer in the automotive industry. The powder grades are predominantly manufactured by water-atomization, yielding powder particles with highly irregular morphology and good compressibility, making the powder ideal for the conventional press-and-sinter manufacturing route. LÄS MER