Sökning: "boron nitride"
Visar resultat 1 - 5 av 16 uppsatser innehållade orden boron nitride.
1. Additives in a steam engine to decrease friction : Friction testing of solid lubricants in powder form
Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)Sammanfattning : This thesis aims to investigate the coefficient of friction between steel on steel contacts with the addition of solid lubricants such as h-BN, WS2, MoS2 in powder form, in dry conditions and wet conditions. More specifically, the purpose is to enhance the sliding between the piston rings and cylinder block in a modern high temperature steam engine developed by RANOTOR. LÄS MER
2. WEAR RESISTANT MULTI FUNCTIONAL POLYMER COATINGS
Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikSammanfattning : This study aims to develop coatings which show wear resistant behaviour along with multiple functions such as improved ice adhesion, better freezing delay etc which help in improving the effectiveness of the wind turbine efficiency. The significance of anti-icing/de-icing solutions for wind turbines is emphasized since ice accretion can cause serious issues in generation of power and might lead to damage of blades. LÄS MER
3. SFEER Hydrogen Permeation : Finding a suitable coating for the PA6 liner
Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskapSammanfattning : Water Stuff & Sun are developing a hydrogen battery based on a technology called SFEER’s. The SFEER’s are spherical high-pressure gas storage containers that are the size of a tennis ball. They consist of a carbon fiber-shell that is lined on the inside with a polymer called PA6. LÄS MER
4. Relating Process Data to Product Quality in Transmission Manufacturing
Master-uppsats, KTH/Industriell produktionSammanfattning : Research has shown that vibration produced by a machine tool provides useful information for the maintenance of its structural parts. Thus, the vibration signal should also give information about tool wear and, consequently, surface roughness of the machined workpieces. LÄS MER
5. Analysis of Heating Processes for the Production of Bipolar Plates in PEM Fuel Cells
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : Polymer electrolyte membrane fuel cells (PEMFCs) are a promising alternative to combustion engines and batteries in vehicles. PEMFCs are more efficient than combustion engines, and cars powered by PEMFCs tend to have longer ranges than battery powered cars and has a short fuelling time. LÄS MER