Search for dissertations about: "nanostructured powder"

Showing result 1 - 5 of 12 swedish dissertations containing the words nanostructured powder.

2. 1. Nanostructured Bulk Thermoelectrics : Scalable Fabrication Routes, Processing and Evaluation

   Author : Mohsen Yakhshi Tafti; Muhammet S. Toprak; Gao Min; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Thermoelectric; Iron antimonide FeSb2 Skutterudite; Copper Selenide Cu2Se ; Spark Plasma Sintering SPS ; nanomaterial; Teknisk materialvetenskap; Materials Science and Engineering; Energy Technology; Energiteknik;

   Abstract : Current fossil fuel based energy sources have a huge shortcoming when one discusses their efficiency. The conversion efficiency of fossil fuel-based technologies is less than 40% in best cases. READ MORE

4. 2. Processing of Nanostructured WC-Co Powders and Sintered Steels

   Author : Zongyin Zhang; KTH; []
   Keywords : Nanostructured powder; Chemical synthesis; Fe-Mn-Si steel; Fe-Cu swelling; Mechanical properties; Sintering parameters;

   Abstract : Processing of nanostructured WC-Co and W-Co powders,modelling of Fe-Mn-Si alloy, swelling of Fe-Cu alloy, andmechanical properties and sintering of Fe-Mn-Si steels havebeen studied in the present thesis.W-Co precursors made by chemical synthesis were used toproduce nanostructured WCCo and W-Co powders by calcination,reduction and carburization. READ MORE

5. 3. Thermochemical processing of nanostructured W-Co and WC-Co powders

   Author : Zongyin Zhang; KTH; []
   Keywords : Nanostructured powder; WC-Co; W-Co; Co-precipitation; Chemical precursor; Calcination; Phase constitute; Processing; Calcination; Reduction; Carburization;

   Abstract : .... READ MORE

6. 4. Nanostructured Tungsten Materials by Chemical Methods

   Author : Sverker Wahlberg; Mamoun Muhammed; Håkan Engqvist; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Tungsten based-materials are used in many different technical fields, particularly in applications requiring good temperature and/or erosion resistance. Nanostructuring of tungsten alloys and composites has the potential to dramatically improve the materials’ properties, enhancing the performance in present applications or enabling totally new possibilities. READ MORE

7. 5. Development of Nanostructured Tungsten Based Composites for Energy Applications

   Author : Mazher Ahmed Yar; Mamoun Muhammed; Per-Olov Käll; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tungsten; Nano-tungsten; ODS tungsten; W-La2O3; W-Y2O3; SPS; Plasma-facing materials; Armour material; fusion material;

   Abstract : Tungsten (W) based materials can be used in fusion reactors due to several advantages. Different fabrication routes can be applied to develop tungsten materials with intended microstructure and properties for specific application including nanostructured grades. READ MORE