Sökning: "Spinodal"

Visar resultat 11 - 15 av 52 avhandlingar innehållade ordet Spinodal.

1. 11. Phase Separation in Stainless Steels Studied by Small-angle Neutron Scattering

   Författare :Xin Xu; Peter Hedström; Joakim Odqvist; John Ågren; Cristelle Pareige; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fe-Cr alloys; stainless steels; spinodal decomposition; phase separation; small-angle neutron scattering; mechanical properties; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : Fe-Cr based steels, i.e. stainless steels, possessing a combination of excellent corrosion resistance and good mechanical properties, have indispensable applications ranging from low-end cooking utensils, to sophisticated components for nuclear power plants. LÄS MER

3. 12. An Atom-Probe Tomography Study of Phase Separation in Fe-Cr Based Steels

   Författare :Jing Zhou; John Ågren; Peter Hedström; Hänninen Hannu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fe-Cr alloys; Ferritic stainless steels; Spinodal decomposition; Phase separation; Atom probe tomography; Radial distribution function RDF ; Materials Science and Engineering; Teknisk materialvetenskap;

   Sammanfattning : Stainless steels are very important engineering materials in a variety of applications such as in the food industry and nuclear power plants due to their combination of good mechanical properties and high corrosion resistance. However, ferrite-containing stainless steels are sensitive to the so-called ‘475°C embrittlement’, which is induced by phase separation of the ferrite phase, where it decomposes into Fe-rich ferrite (α) and Cr-rich ferrite (α'). LÄS MER

4. 13. Experimental study of phase separation in Fe-Cr based alloys

   Författare :Jing Zhou; John Ågren; Joakim Odqvist; Peter Hedström; Andersson Marcus; KTH; []
   Nyckelord :Duplex stainless steels; Ferritic stainless steels; Spinodal decomposition; Phase separation; Atom probe tomography; Clustering; Radial distribution function RDF ;

   Sammanfattning : Duplex stainless steels (DSSs) are important engineering materials due to their combination of good mechanical properties and corrosion resistance. However, as a consequence of their ferrite content, DSSs are sensitive to the so-called ‘475°C embrittlement’, which is induced by phase separation, namely, the ferrite decomposed into Fe-rich ferrite (α) and Cr-rich ferrite (α'), respectively. LÄS MER

5. 14. Thin films of polyfluorene:fullerene blends - Morphology and its role in solar cell performance

   Författare :Cecilia Björström Svanström; Ellen Moons; Jean Manca; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer Solar Cells; Polymer Blends; Morphology; Polyfluorene; PCBM; AFM; SIMS; Spin-Coating; Surface Directed Spinodal Decomposition; Physics; Fysik; Physics; Fysik;

   Sammanfattning : The sun provides us daily with large quantities of energy in the form of light. With the world’s increasing demand of electrical energy the prospect of converting this solar light into electricity is highly tempting. In the strive towards mass-production and low cost solar cells, new types of solar cells are being developed, e.g. LÄS MER

7. 15. TiAlN-based Coatings at High Pressures and Temperatures

   Författare :Robert Pilemalm; Magnus Odén; Mikael Olsson; Rachid M'Saoubi; Mats Jöesaar; Linköpings universitet; []
   Nyckelord :Materials science; thin films; coatings; spinodal decomposition; TiAlN; TiZrAlN; HPHT; high pressure high temperature; BELT-press; transmission electron microscopy; x-ray diifraction; microhardness;

   Sammanfattning : TiAlN and TiAlN-based coatings that are used of relevance as protection of cutting tool inserts used in metal machining have been studied. All coatings were deposited by reactive cathodic arc evaporation using industrial scale deposition systems. The metal content of the coatings was varied by using different combinations of compound cathodes. LÄS MER