Sökning: "nanocomposite films"

Visar resultat 1 - 5 av 50 avhandlingar innehållade orden nanocomposite films.

1. 1. Nanocomposite films for corrosion protection

   Författare :Majid Sababi; Jinshan Pan; J.M.C. (Arjan) Mol; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; corrosion protection; nanocomposite; coating; tool alloy; layer‐by‐layer; polarization; passivity; nanomechanical; topography; Mefp‐ 1; ceria nanoparticle; PAni; UV‐cure; AFM; Peak Force QNM; EIS; SEM; CRM; QCM‐D; ATR‐FTIR;

   Sammanfattning : This thesis describes technical and scientific aspects of new types of composite films/coatings for corrosion protection of carbon steel, composite films with nanometer thickness consisting of mussel adhesive protein (Mefp‐1) and ceria nanoparticles, and polymeric composite coatings with micrometre thickness consisting of conducting polymer and ceria nanoparticles in a UV‐curing polyester acrylate (PEA) resin.The influence of microstructure on corrosion behaviour was studied for a Fe‐Cr‐V‐N alloy containing micro‐sized nitrides with different chemical composition spread in martensitic alloy matrix. LÄS MER

3. 2. Me-Si-C (Me= Nb, Ti or Zr) : Nanocomposite and Amorphous Thin Films

   Författare :Olof Tengstrand; Lars Hultman; Per Eklund; Benny André; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : This thesis investigates thin films of the transition metal carbide systems Ti-Si-C, Nb-Si-C, and Zr-Si-C, deposited at a low substrate temperature (350 °C) with dc magnetron sputtering in an Ar discharge. Both the electrical and mechanical properties of these systems are highly affected by their structure. LÄS MER

4. 3. Solution-Chemical Synthesis of Cobalt and Iron:Zinc Oxide Nanocomposite Films

   Författare :Ulrika Lagerqvist; Annika Pohl; Peter Svedlindh; Mikael Ottosson; Theodor Schneller; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fe:Zn oxide; Co-CoO; Solution-chemical synthesis; Heat treatment parameters; Nanocomposite; Film; Multilayer; Phase ratio; Phase distribution; Exchange bias; Magnetism; Photocatalysis; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

   Sammanfattning : The potentially most important challenges today are related to energy and the environment. New materials and methods are needed in order to, in a sustainable way, convert and store energy, reduce pollution, and clean the air and water from contaminations. LÄS MER

5. 4. Synthesis and Characterization of Amorphous Carbide-based Thin Films

   Författare :Matilda Folkenant; Ulf Jansson; Erik Lewin; Paul Mayrhofer; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Amorphous; coating; thin film; nanocomposite; sputter deposition; PVD; XPS; SEM; TEM; electrical properties; mechanical properties;

   Sammanfattning : In this thesis, research on synthesis, structure and characterization of amorphous carbide-based thin films is presented. Crystalline and nanocomposite carbide films can exhibit properties such as high electrical conductivity, high hardness and low friction and wear. LÄS MER

7. 5. MAX phase thin films : unique multifunctional ceramics with the elements Ti, Si, Ge, Sn, and C

   Författare :Jens Emmerlich; Wolfhard Möller; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thin solid films; Single-crystal; Physics; Fysik;

   Sammanfattning : Mn+1AXn phases are ternary carbides or nitrides (X) consisting of an early transition metal (M), and (A)- group element (group III-V). They combine ceramic and metallic properties with high oxidation and thermal shock resistance as well as low resistivity. LÄS MER