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Pellumb Jakupi
University of Western Ontario
27Publications
12H-index
382Citations
Publications 27
Newest
Published on Sep 1, 2016in Electrochimica Acta5.38
Thalia E. Standish2
Estimated H-index: 2
(UWO: University of Western Ontario),
Jian Chen17
Estimated H-index: 17
(UWO: University of Western Ontario)
+ 5 AuthorsDavid W. Shoesmith32
Estimated H-index: 32
(UWO: University of Western Ontario)
Abstract The corrosion of high level nuclear waste containers under permanent disposal conditions can occur via a number of processes which change in importance as the environment within a deep geologic repository evolves from oxic to anoxic. The container design involves a copper coating on a steel vessel. The characteristics of these coatings are being assessed using standard analytical methods, including microscopy and electron backscatter diffraction. The corrosion processes on the surface o...
Published on Jun 14, 2016in Corrosion1.86
N. Ebrahimi8
Estimated H-index: 8
(UWO: University of Western Ontario),
Pellumb Jakupi12
Estimated H-index: 12
(UWO: University of Western Ontario)
+ 1 AuthorsD.W. Shoesmith27
Estimated H-index: 27
(UWO: University of Western Ontario)
Robert Matthew Asmussen3
Estimated H-index: 3
(UWO: University of Western Ontario),
W. J. Binns1
Estimated H-index: 1
(UWO: University of Western Ontario)
+ 2 AuthorsD.W. Shoesmith27
Estimated H-index: 27
(UWO: University of Western Ontario)
The electrochemical behaviour of two Al-Mn materials (Al- 5.5 at % Mn and Al- 13.5 at % Mn) has been studied in 0.275 M NaCl and 0.138 M MgCl2 solutions to simulate the cathodic environment of Al-Mn particles during the corrosion of a Mg alloy. Upon polarization in NaCl solution to a potential in the range expected on a corroding Mg alloy, the Al-5.5 at % Mn alloy proved unstable undergoing de-alloying (loss of Al) and delamination of layers of the Al(OH)3 formed. This leads to a steady increase...
Published on Jan 1, 2016in Journal of The Electrochemical Society3.12
N. Ebrahimi8
Estimated H-index: 8
(UWO: University of Western Ontario),
Pellumb Jakupi12
Estimated H-index: 12
(UWO: University of Western Ontario)
+ 3 AuthorsD.W. Shoesmith27
Estimated H-index: 27
(UWO: University of Western Ontario)
Published on Dec 1, 2015in Corrosion1.86
N. Ebrahimi8
Estimated H-index: 8
,
Pellumb Jakupi12
Estimated H-index: 12
+ 1 AuthorsD.W. Shoesmith27
Estimated H-index: 27
The roles of the alloying elements Mo, Cr, and W in resisting crevice corrosion of UNS N06022, UNS N06625, and UNS N10362 have been studied under galvanostatic conditions in 5 mol/L NaCl at 150°C. Corrosion damage patterns were investigated using surface analytical techniques such as scanning electron microscopy and optical imaging, and the corrosion products characterized by energy dispersive x-ray spectroscopy. While the Cr content of the alloy is critical in controlling initiation of crevice ...
Published on Nov 1, 2015in Journal of Nuclear Materials2.55
Pellumb Jakupi12
Estimated H-index: 12
(UWO: University of Western Ontario),
Peter G. Keech16
Estimated H-index: 16
(Nuclear Waste Management Organization)
+ 4 AuthorsDesmond E. Moser24
Estimated H-index: 24
(UWO: University of Western Ontario)
Abstract Copper coated steel containers are being developed for the disposal of high level nuclear waste using processes such as cold spray and electrodeposition. Electron Back-Scatter Diffraction has been used to determine the microstructural properties and the quality of the steel-copper coating interface. The influence of the nature of the cold-spray carrier gas as well as its temperature and pressure (velocity) on the coating's plastic strain and recrystallization behaviour have been investi...
Published on Apr 1, 2015in Corrosion Science6.36
R. Matthew Asmussen9
Estimated H-index: 9
(UWO: University of Western Ontario),
W. Jeffrey Binns5
Estimated H-index: 5
(UWO: University of Western Ontario)
+ 4 AuthorsDavid W. Shoesmith32
Estimated H-index: 32
(UWO: University of Western Ontario)
The corrosion of an AM50 Mg alloy was studied in ethylene glycol using electrochemical and electron microscopy techniques. Switching from H2O to ethylene glycol, it was shown that the corrosion of the AM50 alloy was significantly suppressed thereby slowing H2 evolution. The corrosion of the AM50 alloy was mapped using scanning electrochemical microscopy in the feedback mode. Ferrocenemethanol can be used to expose the reactive anodic areas on the Mg alloy. These studies confirmed that studies in...
Published on Feb 1, 2015in Corrosion1.86
R. Matthew Asmussen9
Estimated H-index: 9
,
W. Jeffrey Binns5
Estimated H-index: 5
+ 1 AuthorsDavid W. Shoesmith32
Estimated H-index: 32
The corrosion behavior of Mg alloy ZEK100 was investigated in water and in chloride-containing environments. The alloy is composed of an α-Mg matrix and a wide-spread dispersion of a Mg-Zn-Nd phase and Zr-rich particles. Potentiodynamic polarization measurements showed the corrosion resistance of the ZEK100 alloy improved with decreasing chloride content. Intermittent immersions in 0.16 wt% sodium chloride (NaCl) showed corrosion occurred preferentially by tracking along the surface, interlinkin...
Published on Sep 29, 2014
Pellumb Jakupi12
Estimated H-index: 12
(UWO: University of Western Ontario),
Bill Santos + 2 AuthorsJenny Been
Newly designed miniature Compact Tension (CT) specimens, designed according to standard ASTM dimension ratios, and machined out of previously in-service X65 pipeline steel were exposed to super-imposed cyclic loading at high mean stresses in NS4 solution to determine the behaviour of X65 steel to ripple loading under near neutral pH conditions. Electron Back-Scatter Diffraction (EBSD) was used to study the microstructural grain geometry to determine if it influences stress-corrosion cracking (SC...
Published on Jun 1, 2014in Corrosion Science6.36
Mohsen Danaie19
Estimated H-index: 19
(McMaster University),
Robert Matthew Asmussen3
Estimated H-index: 3
(UWO: University of Western Ontario)
+ 2 AuthorsGianluigi A. Botton44
Estimated H-index: 44
(McMaster University)
Abstract The behaviour of Al–Mn precipitates during atmospheric and aqueous corrosion of an AM50 Mg alloy was investigated using site-specific analytical electron microscopy. After air-exposure, localized attack was observed close to Al–Mn precipitates, with the top layer of the intermetallic enriched in Al and O. During immersed corrosion, these precipitates developed protruding domes of corrosion products, with crystalline Mg(OH) 2 on top and an inner layer of crystalline MgO. After prolonged ...
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