Faculty of Physics, Georg-August-Universitaet Goettingen, German, July 2010
THESIS: For the vacancies formation in Palladium during hydrogen loading with using a quartz balance.
(Zur Leerstellenbildung in Pd bei Wasserstoffbeladung unter Verwendung einer Quarzwaage).
In my Diploma Thesis I investigated the formation of vacancies in Palladium during hydrogen loading with using a quartz balance (QB). It describes a type of quartz balance, which was designed primarily to estimate the vacancies concentration in Pd by hydrogen charging and developed. This QB is generally suitable for other metals.
Furthermore, I examined the overall relative volume change of the sample during loading till CH= 0.4 and the relative lattice parameter change. This technique of generating a vacancies and their measurement with the quartz balance describes a good method for the in situ measurement. The lattice parameters aα und aβ were determined and grain sizes using the Scherrer formula from XRD measurement.
Using of electron microscopes:
▪ The loaded and unloaded Palladium and Nickel samples were examined in the nanometer range by using the electron microscopy (SEM), to determine whether the grains were in the interior free from dislocations or contain many dislocations.
▪ Further experimental investigations were carried out to observe the dislocations and other defects caused by the hydrogen loading by using the microscopy (TEM) and compared them with images of unloaded samples. The unloaded samples were on the nanometer scale assayed with the electron microscope to determine whether the grain inside was free of dislocations or contain many dislocations. The recordings of the ex-situ samples of palladium-loaded point out that there may be some sporadic dislocation networks and stacking faults within the grains. The dislocation density is about
Using X-Ray diffractometer (XRD)
▪ The lattice parameters of the palladium-samples were determined before and after the hydrogen loading at various concentrations by XRD measurements
Arabic: Native language
Germany: Excellent in spoken and written (DSH Certificate (German Language Proficiency Exam for the Admission to Higher Education))
English: Very good in speaking and writing (IELTS Certificate)
my research area is in Material physics (Hydrogen in metals). I investigated the formation of vacancies in Palladium and nickel during hydrogen loading with using a quartz balance (QB).
The courses I have taught were:
Translation of experiments in physics for undergraduate students from English and German to Arabic and I was responsible for the Arabic page in this company.
I have awarded this certificate in recognition of valuable contribution (Processing and installation physics laboratories 101 +102 in the new university building and motivate the students to participate in extracurricular activities and for example visit scientific institutions outside the university in order to increase scientific awareness to the students and encourage students to acquire computer skills).
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