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Showing result 1 - 5 of 12 swedish dissertations matching the above criteria.

2. 1. Engineering Nanofluids for Heat Transfer Applications

   Author : Nader Nikkam; Toprak Muhammet; Mamoun Muhammed; Yulong Ding; KTH; []
   Keywords : nanofluid; thermal conductivity; viscosity; heat transfer; heat transfer coefficient; HTC; SiC nanoparticles; Cu nanoparticles; mesoporous silica; CNT; microwave synthesis; Kemi; Chemistry;

   Abstract : Nanofluids (NFs) are nanotechnology-based colloidal dispersion prepared by dispersing nanoparticles (NPs) in conventional liquids, as the base liquid. These advanced fluids have displayed potential to enhance the performance of conventional heat transfer fluids. READ MORE

4. 2. Assemblies of Colloidal Hydrochar Nanoparticles and their Derived Activated Carbons for CO2 Sorption

   Author : Xia Wang; Niklas Hedin; Gunnar Svensson; Oren Regev; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; colloids; hydrothermal carbonization; glucose; directed assembly; reactive infiltration; templating; silicon carbide; tricopper silicide; redispersion; nanoparticles; chemical activation; activated carbons; CO2 sorption; Materials Chemistry; materialkemi;

   Abstract : Carbon-rich colloids are of great fundamental and technological interest and in this thesis, I tested a range of hypotheses and studied aspects of small hydrochar-based colloids and their colloidal and material chemistry. Crude hydrochar dispersions were synthesized by hydrothermal carbonization of glucose and purified by dialysis. READ MORE

5. 3. Investigation of electrical and magnetic properties of nanoparticles and nanofibers with the aim to tailor material properties of nanocomposites

   Author : Anna Jänis; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microscopy; ferrite; SiC; nanocomposite; nanowire; microwave absorbing properties; network analyzer; nanoparticle;

   Abstract : Nanocomposites are the subject of interest in this study which can be explained by the factum that using building blocks with dimensions in the nanosize range makes it possible to design and create new materials which can satisfy several functions at the same time for many applications. The applications of interest in this study belong to the microwave frequency region and for that reason a number of materials were investigated to define their microwave absorbing properties. READ MORE

6. 4. Silicon Carbide Reinforced Alumina and Mullite Ceramics

   Author : Stefan Gustafsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ceramic Nanocomposites; Creep; SEM; SiC; Grain Boundaries; Microanalysis; Mullite; Pressureless Sintering; TEM; Alumina;

   Abstract : The aim of this work was to develop homogeneous ceramic nanocomposite materials with good thermal and structural stability as well as good mechanical properties. The development of microstructure was related to the material properties. READ MORE

7. 5. Study of particle-current-electrocrystallization interactions in electroplating of Ni/SiC coatings

   Author : Santiago Pinate; Caterina Zanella; Peter Leisner; Jönköping University; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Composite coatings; Nanoparticles; Electrocrystallisation; Microstructure; Surface treatment; Pulse plating; Ultrasound agitation; Kompositbeläggningar; Nanopartiklar; Elektrokristallisering; Mikrostruktur; Ytbehandling; Pulsplätering; Ultraljudsomrörning;

   Abstract : Composite coatings have great potential due to the possibility to combine properties of two different materials in one coating. This way, new surface properties can be tailored and applied to any material's surface. READ MORE