Search for dissertations about: "tungsten disulphide"

Found 2 swedish dissertations containing the words tungsten disulphide.

2. 1. Formation and Function of Low-Friction Tribofilms

   Author : Harald Skiöld Nyberg; Staffan Jacobson; Allan Matthews; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tribology; tribofilm; PVD; coating; low-friction; tungsten disulphide; transition metal dichalcogenide; tribochemistry; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

   Abstract : The use of low-friction coatings on machine elements is steadily increasing, and they are expected to play an important role in the reduction of fuel consumption of future motorized vehicles. Many low-friction coatings function by transformation of the outermost coating layer into tribofilms, which then cover the coating surface and its counter surface. READ MORE

4. 2. Sputtering and Characterization of Complex Multi-element Coatings

   Author : Erik Särhammar; Tomas Nyberg; Ulf Jansson; Urban Wiklund; Gustaf Sjöblom; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; thin film; coating; magnetron sputtering; modelling; tribofilm; tungsten disulphide;

   Abstract : The thin film technology is of great importance in modern society and is a key technology in wide spread applications from electronics and solar cells to hard protective coatings on cutting tools and diffusion barriers in food packaging. This thesis deals with various aspects of thin film processing and the aim of the work is twofold; firstly, to obtain a fundamental understanding of the sputter deposition and the reactive sputter deposition processes, and secondly, to evaluate sputter deposition of specific material systems with low friction properties and to improve their performance. READ MORE