Search for dissertations about: "cobalt 60"

Showing result 1 - 5 of 7 swedish dissertations containing the words cobalt 60.

  2. 1. Towards more sustainable approaches for protecting surfaces against wear

    Author : Kaveh Torkashvand; Mohit Kumar Gupta; Nuria Espallargas; Högskolan Väst; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wear; HVAF spraying; WC-Based Coatings; Sustainability; Binder Chemistry; Slitage; HVAF; WC-baserade beläggningar; Hållbar produktion; Bindemedelskemi; Production Technology; Produktionsteknik;

    Abstract : WC-Co coatings, with and without chromium additives, are widely used in the industry for severe tribological applications. However, concerns about cobalt supply and its environmental and health impacts have led industries to explore sustainable binder alternatives. READ MORE

  4. 2. Advances in the application of an early and selective recovery of lithium from spent lithium-ion batteries via hydrometallurgical methods

    Author : Léa Rouquette; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; recycling; organic acid.; thermal treatment; Lithium; hydrometallurgy;

    Abstract : In 2020 alone, the use of electric vehicles (EVs) contributed to more than 50 Mt CO2-eq of savings in GHG emissions globally. Given their performance in terms of energy and power density, Lithium-ion batteries (LiBs) are the technology of choice for the success of rapid EV growth. READ MORE

  5. 3. Fundamental models and testing of creep in copper

    Author : Fangfei Sui; Pavel A. Korzhavyi; Rolf Sandström; Alan Cocks; KTH; []
    Keywords : Copper; Creep tests; Multiaxial stress state; Finite element method; Basic modelling; Tertiary creep; Precipitation hardening;

    Abstract : Many sustainable technologies for energy production, for example, generation IV nuclear system, demand the use of materials operating at elevated temperatures for long duration of up to 60 years. Requirements that are even more stringent are found for creep exposed copper canisters for disposal of spent nuclear waste. READ MORE

  6. 4. Heterogeneous Photolytic Synthesis of Nanoparticles

    Author : Oscar Alm; Klaus Piglmayer; Uppsala universitet; []
    Keywords : Chemistry; LCVD; Nanotechnology; Metallocene; Magnetic; Photolysis; OES; tungsten oxide; gas sensing; Kemi;

    Abstract : Nanoparticles of iron, cobalt and tungsten oxide were synthesised by photolytic laser assisted chemical vapour deposition (LCVD). An excimer laser (operating at 193 nm) was used as an excitation source. The LCVD process, was monitored in situ by optical emission spectroscopy (OES). READ MORE

  7. 5. Environmental, Resource and Health Impacts of Hard Materials

    Author : Anna Furberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MFA; life cycle assessment; material flow analysis; cemented carbide; disability-adjusted life years; LCA; DALY; hard metal; tire stud;

    Abstract : The importance of hard materials for society is illustrated by the fact that entire historical time periods have been named after the predominant hard material used at that time. In the latest century, the introduction of the hard material cemented tungsten carbide with cobalt (WC-Co) has contributed to the economic growth we have seen and this material is crucial for the manufacturing industry of today. READ MORE