Sökning: "corrosion reaction mechanisms"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden corrosion reaction mechanisms.

1. 1. On the estrablishment of effective condition monitoring parameters for copper corrosion problems in mineral oil-filled electrical transformers

   Författare :Ramsey Jadim; Mirka Kans; Linnéuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; condition monitoring parameters; corrosion problems; sulfur deposits; corrosion reaction mechanisms; transformer failures; CBM.; Maskinteknik; Mechanical Engineering;

   Sammanfattning : The power transformer is a critical equipment in which the protection process is essential for modern societies where continuous electric power supplies are required. Copper corrosion problems due to the formation of sulfur deposits on the copper windings of mineral oil-filled power transformers are considered a major issue that can lead to sudden failures, and in some cases, to costly fire and explosion accidents in the power plants. LÄS MER

3. 2. Understanding corrosion protection mechanisms of nanocomposite polymer coatings on carbon steel : A combination of in-situ AFM and electrochemical studies

   Författare :Jing Li; Jinshan Pan; Per Claesson; Herman Terryn; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymer coatings; electrochemistry; nano; in-situ AFM; mechanism; corrosion protection; Kemi; Chemistry; Kemi; Chemistry;

   Sammanfattning : Corrosion protection of carbon steel is crucial in today’s world and there is an urgent need to replace the hazardous compounds used with environmentally friendly anticorrosion coatings. In this European collaborative research project, new types of functional composite anticorrosion coatings for steel were developed with properties beyond the state-of-the-art using nanotechnology. LÄS MER

4. 3. Oxidative Dissolution of Spent Fuel and Release of Nuclides from a Copper/Iron Canister : Model Developments and Applications

   Författare :Longcheng Liu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; model; oxidative dissolution; spent fuel; radiolysis; release; mass transport; radionuclide; hydrogen; corrosion; canister; near field; repository; Chemical engineering; Kemiteknik;

   Sammanfattning : Three models have been developed and applied in the performance assessment of a final repository. They are based on accepted theories and experimental results for known and possible mechanisms that may dominate in the oxidative dissolution of spent fuel and the release of nuclides from a canister. LÄS MER

5. 4. Performance of MCrAlX coatings : Oxidation, Hot corrosion and Interdiffusion

   Författare :Pimin Zhang; Ru Lin Peng; Xin-Hai Li; Sten Johansson; Ping Xiao; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : MCrAlY coatings (M=Ni and/or Co) are widely used for the protection of superalloy components against oxidation and hot corrosion in the hot sections of gas turbines. The drive for coating systems to bestow adequate oxidation and corrosion resistance upon the components becomes urgent as an inevitable result of the necessary improvement in engine combustion efficiency and service lifetime. LÄS MER

7. 5. Prediction of Chloride Penetration into Saturated Concrete Multi-Species Approach

   Författare :Olivier Truc; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diffusion; concrete; multi-species; chloride; corrosion; migration;

   Sammanfattning : The cost due to rehabilitation of corroded reinforced concrete structures is a worldwide matter of concern. The mechanisms of reaction-diffusion involved during the transport of chloride ions into saturated concrete, which are initiating the corrosion process, are therefore studied in this thesis. LÄS MER