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Wyświetlanie 1-2 z 2
Tytuł:
Effects of SiC Particle Size on Properties of Cu-SiC Metal Matrix Composites
Autorzy:
Celebi Efe, G.
Altinsoy, I.
Ipek, M.
Zeytin, S.
Bindal, C.
Powiązania:
https://bibliotekanauki.pl/articles/1491445.pdf
Data publikacji:
2012-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Ni
81.20.Ev
Opis:
This paper was focused on the effects of particle size and distribution on some properties of the SiC particle reinforced Cu composites. Copper powder produced by cementation method was reinforced with SiC particles having 1 and 30 μm particle size and sintered at 700°C. Scanning electron microscopy studies showed that SiC particles were dispersed in copper matrix homogeneously. The presence of Cu and SiC components in composites were verified by X-ray diffraction analysis technique. The relative densities of Cu-SiC composites determined by Archimedes' principle are ranged from 96.2% to 90.9% for SiC with 1 μm particle size, 97.0% to 95.0% for SiC with 30 μm particle size. Measured hardness of sintered compacts varied from 130 to 155 HVN for SiC having 1 μm particle size, 188 to 229 HVN for SiC having 30 μm particle size. Maximum electrical conductivity of test materials was obtained as 80.0% IACS (international annealed copper standard) for SiC with 1 μm particle size and 83.0% IACS for SiC with 30 μm particle size.
Źródło:
Acta Physica Polonica A; 2012, 121, 1; 251-253
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Evaluation of Cu-B₄C Composites Manufactured by Powder Metallurgy
Autorzy:
Yener, T.
Altinsoy, I.
Yener, S.
Celebi Efe, G.
Ozbek, I.
Bindal, C.
Powiązania:
https://bibliotekanauki.pl/articles/1401279.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Ni
81.20.Ev
72.80.Tm
Opis:
In this study, the influences of B₄C ratios on some mechanical and physical properties such as relative density, microhardness and electrical properties of cold pressed Cu-B₄C composites were investigated. Curve fitting is applied for the estimation of electrical conductivity. Commercial copper powders with 40 μm particle size were reinforced with B₄C, with particle size of 40 μm, at ratios of 1, 2, 3 wt.%, for improving mechanical properties of copper used as electrical conductor. Cu-B₄C composites have been fabricated by powder sintering process at a temperature of 900°C for 2 h. The presence of Cu and B₄C, which are dominant components in the sintered composites, were confirmed by X-ray diffraction analysis technique and SEM-EDS. Scanning electron microscope (SEM-EDS) has shown that B₄C particles are distributed homogenously in the copper matrix. The relative densities of Cu and Cu-B₄C composites, sintered at 900°C, ranged from 95.7 to 91.6%. Microhardness of composites ranged from 84.5 to 94.6 HB. It was observed that cold pressed Cu-1 wt.% B₄C composites revealed promising physical properties. Results of electrical conductivity measurement of Cu-B₄C composite material are compared to the results of the model and the overall accuracy level above 96% is obtained.
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 1045-1047
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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