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Wyszukujesz frazę "metal composite" wg kryterium: Wszystkie pola


Wyświetlanie 1-5 z 5
Tytuł:
Radiation Shielding Effect of Boron Carbide Aluminum Metal Matrix Composite
Autorzy:
Akkaş, A.
Tugrul, A.
Addemir, O.
Marşoğlu, M.
Ağacan, B.
Büyük, B.
Powiązania:
https://bibliotekanauki.pl/articles/1401221.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
25.20.Dc
Opis:
Boralyn (Al/B₄C) composite material is produced chiefly of boron carbide and aluminum. Boron Carbide is an important material for the nuclear industry due to high neutron absorption cross-section. This composite is used as shielding materials to absorb neutrons in the nuclear reactors and control road materials. In this study we investigated Al/B₄C composites against gamma radiation. For that purpose, 5 wt.%, 10 wt.%, 15 wt.% and 20 wt.% reinforcement content were investigated. Cs-137 gamma radioisotope source which has 662 keV gamma energy photons were used. For each material, linear and mass attenuation coefficients were calculated. Theoretical mass attenuation coefficients were calculated from XCOM computer code. The theoretical results were compared with experimental results. The results were showed that increasing the amount of Boron Carbide compound content of boralyn composite material decrease the linear and mass attenuation coefficient of materials
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 947-949
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Corrosion Behavior of in-Situ AlB₂/Al-Cu Metal Matrix Composite
Autorzy:
Elcicek, H.
Savaş, Ö.
Aydin, Z.
Özdemir, O.
Kayikci, R.
Powiązania:
https://bibliotekanauki.pl/articles/1398744.pdf
Data publikacji:
2016-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
Opis:
The aim of this study was to fabricate 30 wt.% AlB₂/Al-Cu composites using in-situ casting processes and to investigate the corrosion behavior of the composites and of the matrix material in various media. The electrochemical parameters were obtained from potentiodynamic polarization curves. The composites were prepared by liquid reaction of aluminum matrix with boron oxide at 1400°C. The results show that the corrosion resistance of the composite was higher than that of the matrix in selected corrosion media. The anodic corrosion current density values were decreased by reinforcing AlB₂ particles.
Źródło:
Acta Physica Polonica A; 2016, 129, 4; 661-664
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shielding Effect of Boron Carbide Aluminium Metal Matrix Composite against Gamma and Neutron Radiation
Autorzy:
Akkas, A.
Tugrul, A.
Buyuk, B.
Addemir, A.
Marsoglu, M.
Agacan, B.
Powiązania:
https://bibliotekanauki.pl/articles/1401960.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
25.20.Dc
Opis:
In this study, boralyn (boron carbide-aluminum metal matrix composite material - Al/B₄C) composite materials were investigated on shielding effect against gamma and neutron radiations. The samples were prepared as 5 wt%, 10 wt%, 15 wt%, and 20 wt% reinforcement content and for each content of material has composed in five different average particle sized (3 μm, 53 μm, 113 μm, 200 μm, and 500 μm). Linear and mass attenuation coefficients were calculated experimentally for each composite material against Cs-137 gamma source. Theoretical mass attenuation coefficients of material were calculated by using XCOM computer code. Then the theoretical results were compared with experimental results. Then, macroscopic cross-section values were calculated experimentally for each composite material against Pu-Be neutron source. As the conclusion of the study, it could be understood that in spite of decrease of the attenuation coefficient against gamma radiation, the adding materials give rise to increase the shielding ability of material against neutron radiation.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-176-B-179
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics Bronze/$Al_2O_3(Ni)$ Reinforcement Metal Matrix Composite Produced by Current Activated Sintering
Autorzy:
Uysal, M.
Karslioğlu, R.
Akbulut, H.
Alp, A.
Powiązania:
https://bibliotekanauki.pl/articles/1399704.pdf
Data publikacji:
2013-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Ni
81.20.Ev
81.40.Pq
Opis:
In this study, a bronze matrix (90 wt% Cu + 10 wt% Sn) was reinforced with $Al_2O_3$ particles using mechanical alloying and then produced by a subsequent rapid current sintering technique. The mechanically ball milled bronze powders were reinforced with electroless Ni coated 20 vol.% $Al_2O_3$ particles with three different particle sizes of 90, 70, and 50 μm. Microhardness testing, and scanning electron microscopy were used for the structural characterization of the composites. The tribological behavior of the resultant composites was tested by the ball-on-disk method at 1.0 N applied load with 0.3 m/s sliding speed for determination the wear loss and friction coefficient features against a counterface steel ball.
Źródło:
Acta Physica Polonica A; 2013, 123, 2; 235-237
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical Reactions to Form Composite Layers Aluminium Oxide-Metal
Autorzy:
Tomassi, P.
Powiązania:
https://bibliotekanauki.pl/articles/2035484.pdf
Data publikacji:
2002-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.45.Jn
82.45.Qr
Opis:
Processes leading to the formation of the composite layers aluminium oxide-metal have been investigated. Structure, composition, and other properties of this material have been examined. The mechanism of metal electrodeposition process is discussed.
Źródło:
Acta Physica Polonica A; 2002, 102, 2; 215-220
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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