Rahul, Verma, A. Tripathi, R. Vishwakarma, S.
Published in
Materials Science-Poland
Thin films of non-stoichiometric indium antimonide (In0.66Sb0.34) have been deposited by electron beam evaporation technique on glass substrates at different substrate temperatures, (300–473 K). The films have polycrystalline nature with zinc blende structure. The decrease in electrical resistivity with increasing temperature shows semiconducting b...
Gulkowski, S. Olchowik, J. Cieslak, K. Moskvin, P.
Published in
Materials Science-Poland
Epitaxial Lateral Overgrowth (ELO) is a method of epitaxial growth on a partially masked substrate. It can be a promising method for photovoltaic applications due to a possibility of producing thin and high quality silicon substrates. Since the mask prevents propagation of the substrate dislocations to the laterally overgrown parts of the ELO layer...
Lipiec, W. Wilczyński, W. Szubzda, B.
Published in
Materials Science-Poland
The influence of densification temperature and the size of powder particles on magnetization of remanence J r, coercivity J H c of hot-densified Nd-Fe-B magnets made of MQP-A quenched ribbons was investigated. A connection between magnetic properties, parameters of production process and microstructure of the magnet was confirmed. It was found that...
Chandel, V. Manohar, S. Shukla, J. Manohar, R. Prajapati, A.
Published in
Materials Science-Poland
Low frequency dielectric relaxation has been reported for a nematic liquid crystal in the frequency range of 1 kHz to 10 MHz and in the temperature range from 25 °C to 100 °C. The optical behaviour has also been studied by measuring the refractive indices, birefringence and optical transmittance in the temperature range mentioned above. The birefri...
Lachowicz, M. Dudziński, W.
Published in
Materials Science-Poland
In this paper, metallographic examinations, characterising microstructural changes in the 713C superalloy subjected to remelting by GTA method, are presented. In the fusion zone, precipitation of M23C6 or M6C carbides based on chromium and molybdenum was observed. Eutectic mixtures of (γ-gg′)-MxCy type with highly developed morphology were also per...
Fu, P. Chen, G. Xu, Y. Cai, P. Wang, X.
Published in
Materials Science-Poland
Highly-ordered ternary Fe-Co-Ni alloy nanowire arrays with diameters of about 50 nm have been fabricated by alternating current (AC) electrodeposition into the nanochannels of porous anodic aluminum oxide templates. SEM and TEM results indicate that the alloy nanowires are highly ordered. XRD and HRTEM results show that the ternary FeCoNi alloy nan...
Ali, F. Abu-Assy, M. El-Gazzar, S. Iqbal, M. Hussain, M.
Published in
Materials Science-Poland
Structural and optical properties of CdxZn1−x O (x = 0.0, 0.025, 0.050, 0.075, 0.1) nanopowder, synthesized by co-precipitation method have been investigated. The effect of annealing on the structural and morphological properties was studied using X-ray diffraction. The samples with x = 0.0 up to 0.075 exhibit wurtzite hexagonal phase, whereas, the...
Cieslak, K. Gulkowski, S. Olchowik, J.
Published in
Materials Science-Poland
This work presents an analysis of the influence of SiO2 dielectric coverage of a Si substrate on the solar-cell efficiency of Si thin layers obtained by epitaxial lateral overgrowth (ELO). The layers were obtained by liquid phase epitaxy (LPE). All experiments were carried out under the following conditions: initial temperature of growth: 1193 K; t...
Mohamed, S. Abdeltawab, A. Shoeib, M.
Published in
Materials Science-Poland
Hydroxyapatite (HA) coatings were developed on titanium by electrophoretic deposition at various deposition potentials from 30 to 60 V and at a constant deposition time of 5 minutes using the synthetic HA (Ca10(PO4)6(OH)2,) powder in a suspension of dimethyleformamide (DMF, HCON(CH3)2). The electrochemical corrosion behavior of the HA coatings in s...
Babu Rao, J. Venkata Rao, D. Siva Prasad, K. Bhargava, N.
Published in
Materials Science-Poland
AA 2024 alloy has been melted and cast in a permanent cast iron mould in the form of 18 mm Φ fingers. The synthesis of AA2024 alloy − 5wt.% fly ash composite was made by stir cast technique. A uniform distribution of fly ash particles in the matrix phase was obtained. Good bonding between the matrix and reinforcement was also achieved. Dry sliding ...
