Sökning: "Copper I"

Visar resultat 16 - 20 av 256 avhandlingar innehållade orden Copper I.

  1. 16. Micro-galvanic effects and corrosion inhibition of copper-zinc alloys

    Författare :Mattias Forslund; Jinshan Pan; Christofer Leygraf; Per Claesson; Jin Ying; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Copper; zinc; brass; octadecanethiol; IR Spectroscopy; AFM; atmospheric corrosion; aqueous corrosion; corrosion inhibition; Koppar; zink; mässing; oktadekantiol; IR-reflektions absorptionsspektroskopi; AFM; atmosfärisk korrosion; vattenaktig korrosion; korrosionsinhibering.; Chemical Engineering; Kemiteknik; Kemi; Chemistry;

    Sammanfattning :    With the advancement and accessibility of local probing techniques that can operate at the submicron scale it has become possible to analyse the local corrosion properties of industrially important metallic materials and relate these properties to microstructure characteristics of the same materials. In this doctoral study the focus has been on copper-zinc samples, both as industrial brass alloys and as micro-patterned copper-zinc samples. LÄS MER

  3. 17. Removal and Recovery of Metals from Municipal Solid Waste Incineration ashes by a Hydrometallurgical Process

    Författare :Jinfeng Tang; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; MSWI ash; Cyanex 572; leaching; zinc; Cyanex 923; solvent extraction; LIX860N-I; copper; mixer-settler;

    Sammanfattning : Municipal Solid Waste Incineration (MSWI) fly ash contains significant amounts of leachable metals, and is therefore considered to be a hazardous waste. The increased amounts of fly ash generated cause environmental issues, management costs and accumulation of valuable metals in landfills. LÄS MER

  4. 18. COPPER BINDING PROTEINS IN BREAST CANCER : CELLULAR AND MOLECULAR MECHANISMS

    Författare :Xiaolu Zhang; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Atox1; Memo1; cell migration; breast cancer; copper; ROS;

    Sammanfattning : Cancer is one of the leading causes of human death. However, the mechanisms governing cancer are still not fully understood. Elevated levels of copper (Cu) have been observed in both cancerous tissues and the serum of cancer patients. LÄS MER

  5. 19. Friction Stir Welding of Copper Canisters Using Power and Temperature Control

    Författare :Lars Cederqvist; Innovation; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction stir welding; copper; temperature control; PID control;

    Sammanfattning : This thesis presents the development to reliably seal 50 mm thick copper canisters containing the Swedish nuclear waste using friction stir welding. To avoid defects and welding tool fractures, it is important to control the tool temperature within a process window of approximately 790 to 910°C. LÄS MER

  7. 20. The initial atmospheric corrosion of copper and zinc induced by carboxylic acids : Quantitative in situ analysis and computer simulations

    Författare :Harveth Gil; Christofer Leygraf; Johan Tidblad; Stuart Lyon; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Atmospheric corrosion; copper; zinc; carboxylic acids; modeling; GILDES; in situ; quantification;

    Sammanfattning : Degradation of metals through atmospheric corrosion is a most important and costly phenomenon with significant effects on, e.g., the lifespan of industrial materials, the reliability of electronic components and military equipment, and the aesthetic appearance of our cultural heritage. LÄS MER