rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Study of copper alloy corrosion in flowing water environments at temperature between 20 and 45ºC
  name:
    name part: Mahmood, Mahmood Hameed
    role:
      role term: creator
  name:
    name part: International Islamic University Malaysia
    name part: Department of Manufacturing and Material Engineering
  genre: Theses, IIUM local
  origin info:
    place:
      place term: my
    place:
      place term: Kuala Lumpur
    publisher: Kulliyyah of Engineering, International Islamic University Malaysia
    date issued: 2014
  language:
    language term: eng
  physical description:
    extent: xv, 81 leaves : ill. ; 30cm.
  abstract: Transfer of copper metal by boiler feed water from the condenser tubes to other critical equipment parts of the industrial plant, like steam turbine blades, boiler tubes, can cause serious problems, such as reduction of electricity generation in power plants, boiler failure, and increase production costs, which may ultimately lead to loss of economic viability. Among the factors which affect the corrosion rate of copper alloys in flowing water environments, the relationship between the velocity of feed water and the corrosion rate of copper alloy has not been studied in detail. Therefore, this study investigates the effect of the flow rate of water on the corrosion of copper alloy at different combinations of temperature (between 20 and 45 °C) and dissolved oxygen concentration (between 6.1 and 9.2 mg/l). All other operating condition variables which have effect on flow rate were also considered. The effect of different flow rates on copper alloy corrosion, such as laminar, transition, and turbulent flows, were investigated. It was found that the flow rate condition has a significant effect on the protective copper oxide layer in the inner surface of copper alloy tubes. Surface metallographic characterization by FESM, SEM, and EDX, demonstrated that the copper oxide surface layer cannot withstand the turbulences at the beginning of the turbulent flow condition, while the oxide layer erosion is much less during fully developed turbulent flow condition. Therefore, the corrosion rate values is maximum during the initial phases of the turbulent flow condition, but becomes very low at fully developed turbulent flow conditions associated high water velocity. This indicates that the overall flow rate conditions, which include physical properties of the fluid, hydrodynamic parameters, and dimensions of the pipe, have the dominant influence on corrosion rate.
  note: by Mahmood Hameed Mahmood
  note: Thesis (MSMAT)--International Islamic University Malaysia, 2014.
  note: Includes bibliographical references (leaves 68-70).
  subject:
    geographic code: a-my---
  classification: TA480.C7
  identifier: http://studentrepo.iium.edu.my/handle/123456789/5246
  record info:
    record content source: UIAM
    record creation date: 140915
    language of cataloging:
      language term: eng