Sökning: "evaporation deposition"

Visar resultat 1 - 5 av 64 avhandlingar innehållade orden evaporation deposition.

1. 1. Welds in the lean duplex stainless steel LDX 2101 : effect of microstructure and weld oxides on corrosion properties

   Författare :Elin M. Westin; John Ågren; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Duplex stainless steel; welding; weld metal; HAZ; nitrogen; manganese; austenite formation; phase balance; precipitates; pitting resistance; heat input; solidification; element loss; evaporation; deposition; weld oxides; discoloration; mechanical properties; thermo-mechanical simulation; Geeble; GTA; laser; LOM; SEM; EDS; TEM; Leco; EPMA; ferroxyl test; XPS; post weld cleaning; pickling; Materials science; Teknisk materialvetenskap;

   Sammanfattning : Duplex stainless steels are a very attractive alternative to austenitic grades due to their higher strength and good corrosion performance. The austenitic grades can often be welded autogenously, while the duplex grades normally require addition of filler metal. LÄS MER

3. 2. Microstructure and properties of welds in the lean duplex stainless steel LDX 2101

   Författare :Elin M. Westin; John Ågren; Hannu Hänninen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Duplex stainless steel; welding; HAZ; nitrogen; manganese; microstructure; austenite formation; phase balance; precipitates; element distribution; segregation; depletion; solidification; pitting corrosion resistance; solidification; element loss; evaporation; deposition; weld oxide; thermo-mechanical simulation; thermodynamic modelling; EPMA; XPS; post-weld cleaning; pickling; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik;

   Sammanfattning : Duplex stainless steels can be very attractive alternatives to austenitic grades due to their almost double strength at equal pitting corrosion resistance. When welding, the duplex alloys normally require addition of filler metal, while the commodity austenitic grades can often be welded autogenously. LÄS MER

4. 3. Small-molecule layers for devices -Evaporation growth and characterization of thin films

   Författare :Måns Andreasson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PTCDA; molecular semiconductors; OLED; evaporation deposition; CuPc;

   Sammanfattning : Small-molecule layers for devices- Evaporation growth and characterization of thin filmsMåns AndreassonApplied Semiconductor PhysicsDepartment of Microtechnology and NanoscienceChalmers University of TechnologyAbstractOrganic semiconductors constitute a relatively recent group of materials available for the electronic device designer. Substantially cheaper production technologies and integration with plastic materials are anticipated. LÄS MER

5. 4. Electronic and Structural Properties of Thin Films of Phthalocyanines and Titanium Dioxide

   Författare :Ylvi Alfredsson; Hans Siegbahn; Anders Sandell; Carla Puglia; Kajsa Uvdal; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; photoelectron spectroscopy; x-ray absorption spectroscopy; phthalocyanine; titanium dioxide; electronic structure; electrochromic reactions; thin films; chemical vapor deposition; evaporation; Fysik; Physics; Fysik;

   Sammanfattning : This thesis is based on experimental studies in chemical physics. Titanium dioxide (TiO2) and phthalocyanine’s (Pc’s), interesting in many future perspectives, have been deposited as thin films and studied as follows. Information has been obtained on e.g. LÄS MER

7. 5. Microstructure aspects of transition metal carbide thin films

   Författare :Jun Lu; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; vapour deposition; transition metal carbide; nanocrystallinity; epitaxy; Kemi; Chemistry; Kemi; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : Transition metal carbides are important refractory materials used in many thin film applications. In this thesis, several transition metal carbides have been deposited using different chemical vapour deposition (CVD) and evaporation processes. In particular, the phase composition and microstructure of these carbide films have been studied. LÄS MER