Autor: Ateş, Ş. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of Severe Plastic Deformation on Wear Properties of Aluminum Matrix Composites
Autorzy:: Karademir, I.
Unal, O.
Ates, S.
Gokce, H.
Gok, M.
Powiązania:: https://bibliotekanauki.pl/articles/1032037.pdf
Data publikacji:: 2017-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.-t
Opis:: The influence of severe plastic deformation on wear properties of Al-5wt.%Grp and Al-5wt.%B₄Cp reinforced aluminum matrix composites was studied. Al matrix composites were produced by solid state processing via powder metallurgy route that provides good incorporation and distribution of the reinforcement particles in the matrix. Wear tests were performed by dry sliding using a pin on disk wear tester. Scanning electron microscope was used to examine worn surfaces to study the wear mechanism. Severely deformed specimens exhibited better wear resistance due to the increase of surface hardness of both Al-5wt.%Grp and Al-5wt.%B₄Cp composites. Al-B₄Cp reinforced composite has higher hardness value through the excellent hardness of B₄C particulates. Al-Grp reinforced composites exhibited better wear resistance due to the solid lubricant effect of Gr particulates.
Źródło:: Acta Physica Polonica A; 2017, 131, 3; 487-489
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Radiative lifetimes for singly ionized beryllium
Autorzy:: Çelik, G.
Atalay, B.
Ateş, Ş.
Powiązania:: https://bibliotekanauki.pl/articles/1157856.pdf
Data publikacji:: 2016-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 31.15.ag
32.70.Cs
Opis:: The theoretical lifetimes for singly ionized beryllium (Be II) have been calculated using the weakest bound electron potential model theory and the quantum defect orbital theory under the assumption of the LS coupling scheme. In the calculations, many states are considered. Some lifetime values for highly excited levels have been obtained using these methods. The lifetimes presented in this work have been compared with the early theoretical calculations and measurements presented in the literature. A good agreement with the results in the literature has been obtained.
Źródło:: Acta Physica Polonica A; 2016, 130, 3; 705-709
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Oscillator Strengths for Allowed Transitions in Li(II)
Autorzy:: Ateş, Ş.
Çelik, G.
Powiązania:: https://bibliotekanauki.pl/articles/1807774.pdf
Data publikacji:: 2009-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 31.15.ag
32.70.Cs
Opis:: Electric dipole oscillator strengths have been computed for transitions between both multiplet and individual lines in the Li(II) ion. The weakest bound electron potential model theory has been used. We have employed both numerical Coulomb approximation wave functions and numerical non-relativistic Hartree-Fock wave functions in the determination of expectation values of radii. The necessary energy values have been taken from experimental ionization energies. The oscillator strengths calculated with parameters obtained by using the two different wave functions have been compared not only to each other but also to other data taken from literature. A good agreement with results in literature has been obtained.
Źródło:: Acta Physica Polonica A; 2009, 116, 2; 169-175
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Calculations of Transition Probabilities for Some Excited Levels of Na I
Autorzy:: Çelik, G.
Ateş, Ş.
Powiązania:: https://bibliotekanauki.pl/articles/1812351.pdf
Data publikacji:: 2008-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 31.10.+z
Opis:: Transition probabilities are calculated for individual and multiplet lines between some excited states in neutral sodium by using the weakest bound electron potential model theory. In the determination of parameters required for calculation of transition probabilities, we employed numerical non-relativistic Hartree-Fock wave functions for expectation values of radii in all levels. The necessary energy values were taken from experimental energy data in the literature. The obtained results were compared with accepted values taken from National Institute of Standards and Technology data and multi-configurational Hartree-Fock results given by Fischer. A good agreement was observed in related excited states.
Źródło:: Acta Physica Polonica A; 2008, 113, 6; 1619-1627
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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