Search for dissertations about: "corrosion products"

Showing result 1 - 5 of 74 swedish dissertations containing the words corrosion products.

  1. 1. Corrosion of steel in concrete

    University dissertation from Swedish Cement and Concrete Research Institute, Stockholm

    Author : Kyösti Tuutti; [1982]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Corrosion; carbonation; chloride penetration; threshold values; free and bound chloride; acceptable depth of corrosion; corrosion products; environment types; cracks; cement type; service life calculations; test methods; korrosion; betong; betongkonstruktioner; armeringskorrosion; kloridinträngning; sprickor; livslängdsberäkningar;

    Abstract : The research work that is presented in this thesis aims at mapping out the various mechanisms which control the process of steel corrosion in concrete. The process of corrosion is illustrated with a schematic model where the service life is divided into a period of initiation and a period of propagation. READ MORE

  2. 2. The Role of Microstructure in the Atmospheric Corrosion of Selected Light Alloys and Composites

    University dissertation from Swedish Cement and Concrete Research Institute, Stockholm

    Author : Mohsen Esmaily; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; galvanic corrosion; Al content; microstructure; intermetallic particles; atmospheric corrosion; Al alloy 6xxx; casting; Mg-Al alloys; FSW P; BFSW.; Mg alloys-based MMCs;

    Abstract : Magnesium-aluminum (Mg-Al) alloys, Mg-based metal matrix composites (MMCs) and Al alloys are among the best material candidates for future lightweight solutions. However, the use of these materials is limited by a number of issues, including the ability to resist corrosion. READ MORE

  3. 3. The effect of microstructure and temperature on the atmospheric corrosion of Mg-Al alloys

    University dissertation from Swedish Cement and Concrete Research Institute, Stockholm

    Author : Mohsen Esmaily; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Atmospheric corrosion; microstructure; temperature; corrosion product; magnesium;

    Abstract : The NaCl-induced atmospheric corrosion behavior of the Mg-Al alloy AM50 produced by rheo-casting (RC) and high pressure die casting (HPDC) techniques was studied in the laboratory. The exposures were performed at 95% RH in the absence and presence of 400 ppm CO2 at 22, 4 and -4ºC. In parallel, 99.97%Mg was investigated as reference. READ MORE

  4. 4. Corrosion of painted galvanized steel pretreated with Zr-based thin films

    University dissertation from Swedish Cement and Concrete Research Institute, Stockholm

    Author : Konrad Tarka; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HDG; cyclic corrosion test; SEM; EDS; XRD; Atmospheric corrosion;

    Abstract : For decades, phosphating has been considered state of the art for pretreating car bodies in order to promote corrosion resistance and paint adhesion. Although it offers excellent corrosion protection, the phosphating process has drawbacks. READ MORE

  5. 5. FEM Modelling of Micro-galvanic Corrosion in Al Alloys Induced by Intermetallic Particles Exploration of Chemical and Geometrical Effects

    University dissertation from Stockholm, Sweden : KTH Royal Institute of Technology

    Author : Litao Yin; KTH.; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Finite Element Method FEM ; Modelling; Micro-galvanic corrosion; Al alloy; corrosion product deposition; chemical factors; steric hindrance effect; Kemi; Chemistry;

    Abstract : Localized corrosion, such as pitting, crevice corrosion or galvanic corrosion, is a long-standing phenomenon that can greatly limit the life of metallic materials. For decades experimental methods have been used to try to understand the underlying physical, chemical and electrochemical processes that control localized corrosion in order to find effective protection methods against its propagation. READ MORE