Sökning: "protective coating."

Visar resultat 21 - 25 av 64 avhandlingar innehållade orden protective coating..

  1. 21. Electrochemically nanostructured electrodes for Li-ion microbatteries

    Författare :David Rehnlund; Leif Nyholm; Reiner Lomoth; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electrodeposition; 3D; Li-ion microbatteries; thin films;

    Sammanfattning : Electrodeposition is a promising technique for fabricating complex nanostructures and coating these with suitable thin films of active materials. The research presented in this thesis aims at the development of new electro- chemical methods for the synthesis of nanostructured electrodes suitable for Li-ion microbatteries. LÄS MER

  3. 22. High temperature galling : influencing parameters and mechanisms

    Författare :Leonardo Pelcastre; Jens Bergström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements; Centrumbildning - Centrum för högpresterande stål CHS ; Centre - Centre for High Performance Steel CHS ;

    Sammanfattning : Damage of forming tools at elevated temperatures is a major problem in metal forming processes such as hot stamping. Of special importance is the occurrence of adhesion and gross material transfer from the work-piece to the tool surface, a phenomenon known as galling. LÄS MER

  4. 23. Insights into wear and deformation of alternative binder hardmetals

    Författare :Lisa Toller-Nordström; Susanne Norgren; Ben Britton; Uppsala universitet; []
    Nyckelord :hardmetal; cemented carbide; alternative binders; steel turning; electron microscopy; electron diffraction; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

    Sammanfattning : This work presents new insights into how hardmetals with alternative binders as well as cobalt based references react to wear and deformation. The main focus has been on hardmetals for steel turning, but also on studying certain fundamental properties of the new binder materials. LÄS MER

  5. 24. Isothermal low cycle fatigue of uncoated and coated nickel-base superalloys

    Författare :Svjetlana Stekovic; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : High strength nickel-base superalloys have been used in turbine blades for many years because of their superior performance at high temperatures. However, the superalloys have limited oxidation and corrosion resistance and to solve this problem, protective coatings are deposited on the surface of the superalloys. LÄS MER

  7. 25. Durability evaluation of PEM fuel cell components

    Författare :Live Mølmen; Peter Leisner; Lars Fast; Frode Seland; Jönköping University; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Proton exchange membrane fuel cell; bipolar plate; corrosion; interfacial contact resistance; electrocatalysis; Polymermembranbränsleceller; bipolära plattor; korrosion; kontaktresistans; katalys;

    Sammanfattning : Proton exchange membrane fuel cells (PEMFCs) are used to convert hydrogen and oxygen to electricity, heat, and water. There are no greenhouse gas emissions, given that the hydrogen is produced from renewable sources, such as water electrolysis from wind, hydro or solar energy. LÄS MER