Sökning: "corrosion inhibitor"

Hittade 3 uppsatser innehållade orden corrosion inhibitor.

  1. 1. Experimental Study of Metallic Surfaces Exposed to Cavitation

    Master-uppsats, KTH/Materialvetenskap

    Författare :Marcio Freitas De Abreu; [2018]
    Nyckelord :cavitation; cylinder liner; lamellar gray cast iron; erosion pitting; graphite class; cavitation;

    Sammanfattning : Cylinder liners in heavy-duty truck engines are subjected to intense vibrations and may sustain damage from the cavitation of bubbles in the coolant liquid, with some risks of leakage and engine breakdown. An ultrasonic oscillating probe was used to simulate the pitting rates and behavior of samples extracted from cylinder liners, which are made of grey cast iron, with differences in surface roughness, glycol and inhibitor content in coolant, coolant temperature and graphite flake class; bainitic microstructures were also tested. LÄS MER

  3. 2. Kvalitetsförbättringar och Emballageinstruktioner

    M1-uppsats, Mälardalens högskola/Akademin för innovation, design och teknik

    Författare :Sarkat Sadi; Dennis Assmussen; [2014]
    Nyckelord :Quality; Packaging; Instructions; 7QC Tools; DMIAC; PDCA.; Kvalitet; Emballage; Instruktioner; 7QC-Verktyg; DMIAC; PDCA.;

    Sammanfattning : This report is the result of a thesis carried out at the Department of Innovation, Design and Technology (IDT), at Mälardalen University on behalf of ABB AB Machines.The year was 1988 when ASEA and Brown Boveri formed a joint venture under the name ABB (Asea Brown Boveri). LÄS MER

  4. 3. Electrochemical investigation of "green" film-forming corrosion inhibitors :  

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Hansheng Wang; [2011]
    Nyckelord :corrosion inhibitor; “green chemistry”; film forming; electrochemical method; inhibition efficiency;

    Sammanfattning : In this work, a comparative electrochemical study has been performed to evaluate corrosion inhibition property of several film-forming corrosion inhibitors provide by Akzo Nobel on carbon steel in a chloride solution. For carbon steel exposed to 1 M NaCl solution with and without added inhibitor, electrochemical measurements including electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR) at different exposure time intervals, and potentiodynamic polarization at the termination of the exposure, have been performed to investigate the film forming process and to evaluate corrosion inhibition efficiency of the inhibitors, as well as its evolution with time. LÄS MER