Search for dissertations about: "Tribology lubricants"

Showing result 1 - 5 of 54 swedish dissertations containing the words Tribology lubricants.

2. 1. Ionic lubricants : Molecular features and surface protection mechanisms

   Author : Bulat Munavirov; Sergei Glavatskih; Istvan Furo; Rob Dwyer-Joyce; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ionic liquid; lubrication technology; tribology; boundary lubrication; tribofilm; friction; wear; physico-chemical interaction; diffusion NMR; jonisk vätska; smörjteknik; tribologi; gränsskiktssmörjning; tribofilm; friktion; slitage; fysikalisk-kemisk interaktion; NMR diffusometri; Machine Design; Maskinkonstruktion;

   Abstract : In this thesis ionic liquids (ILs) are investigated as prospective candidates for lubrication. Three custom synthesized phosphonium orthoborate type ILs were extensively studied from the prospective of molecular structuring both in bulk and at the interface and from the prospective of their lubricating performance as neat lubricants and as additives in oils. READ MORE

4. 2. Tribology of elastomers

   Author : Mohammad Mofidi; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

   Abstract : In this work, the tribological behaviour of different sealing elastomers has been studied. The influence of aging of a sealing elastomer in different lubricants on its tribological behaviour has been investigated. Tribological behaviour of sealing elastomers in dry condition and the mechanisms occurring in run-in period have been studied. READ MORE

5. 3. Environmentally adapted lubricants : properties and performance

   Author : Anders Pettersson; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

   Abstract : The lubricants of the future have to be more environmentally adapted, show a higher level of performance, and give a lower total life cycle cost (LCC) than the lubricants that are used today. One way to be able to produce, choose and formulate these lubricants is to have good knowledge about the properties of the base fluids and their additive response. READ MORE

6. 4. Self-Lubricating Laser Claddings in the Context of Hot Metal Forming

   Author : Hector Torres; Braham Prakash; Manuel Rodriquez Ripoll; Paul Mayrhofer; Tomasz Liskiewicz; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tribology; High Temperature; Laser Claddings; Self-Lubricating; Hot Stamping; Machine Elements; Maskinelement;

   Abstract : Laser cladding is a coating technique with significant advantages like the high quality of the resulting layers, their excellent metallurgical bonding to the substrate or the possibility to repair/rework high-value mechanical components. In recent years, the incorporation of solid lubricants to the base powder in order to produce self-lubricating claddings has been shown in the literature to be possible, with several of the described coatings being able to operate at high temperatures with low friction and wear. READ MORE

7. 5. Tribology of elastomeric seal materials

   Author : Mohammad Mofidi; Jozé Vizintin; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

   Abstract : Elastomers are the most commonly used materials for various sealing applications owing to their low modulus of elasticity, large elongation-at-break, and high Poisson's ratio. Most seals operate in the presence of lubricants; therefore the sealing elastomeroil interaction plays an important role in determining the tribological performance of elastomers. READ MORE