Search for dissertations about: "ni based coating"

Showing result 1 - 5 of 26 swedish dissertations containing the words ni based coating.

  2. 1. High Temperature Oxidation and Corrosion of Ni-Based Superalloys for Industrial Gas Turbines

    Author : Haiping Lai; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H2O; Ni-based superalloys; Pt; electron microscopy.; surface treatment; atmosphere Na2SO4; SO2; coating; oxide scale;

    Abstract : High temperature oxidation and corrosion of Ni-based superalloys used for blades in industrial gas turbines was studied using advanced high-resolution electron microscopy methods. Both coated and non-coated alloys were tested. READ MORE

  4. 2. Aluminide Diffusion Coatings for Ni Based Superalloys. Coating and Oxide Microstructure

    Author : Johan Angenete; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microstructure; aluminide diffusion coatings; nickel based superalloys; SEM; TEM; high temperature oxidation;

    Abstract : This thesis reports on investigations of high temperature oxidation resistant aluminide diffusion coatings for Ni based superalloys. Such coatings basically consist of a .BETA.-NiAl layer at the surface of the . READ MORE

  5. 3. Ni-based coatings for high temperature corrosion protection

    Author : Esmaeil Sadeghimeresht; Shrikant V. Joshi; Nicolaie Markocsan; Petri Vuoristo; Högskolan Väst; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal Spray Coating; HVAF; High Temperature Corrosion Protection; Composition; Microstructure; Dispersed Oxide; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Abstract : Biomass/waste-fired boilers severely suffer from high temperature corrosion of critical load-bearing components, e.g. water-wall and superheater tubes, due to presence of Cl-containing corrosive species. READ MORE

  6. 4. Novel powder-coating solutions to improved micro-structures of ZnO based varistors, WC-Co cutting tools, and Co/Ni nano-phase films and sponges

    Author : Åsa Ekstrand; Mari-Ann Einarsrud; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Solution processing; powder coating; nano-phase materials; sintering process; varistor; WC–Co; cobalt; nickel; films; sponges; Kemi; Chemistry; Kemi; Inorganic Chemistry; Oorganisk kemi;

    Abstract : Solution chemistry is a versatile and powerful tool in the synthesis of designed, complex nano-level high-tech materials. Normally, the technique is considered too expensive for large-scale production of complex multi-component ceramic materials. READ MORE

  7. 5. Material Solutions for Mitigating High Temperature Corrosion in Biomass- and Waste-fired Boilers - Utilizing Novel FeCrAl Alloys and HVAF-sprayed Ni-based Coatings

    Author : Johan Eklund; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Waste; HVAF; High temperature corrosion; Biomass; FeCrAl alloys; Ni-based coatings; Silicon;

    Abstract : Combustion of biomass and waste for heat and electricity production is a promising alternative to fossil fuels and is thereby an important step towards a more sustainable future. However, due to substantial amounts of alkali- and chlorine-containing species as well as moisture in biomass and waste, the combustion of these results in a highly corrosive environment which accelerates the degradation of steel components in the boiler, drastically increasing the maintenance costs. READ MORE