Materials Literature
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The X-band EPR spectra of the UV -, X -, and γ irradiated glasses of the SiO2-Na2O-CaO-P2O5 (Bioglass) and CaO-Ga2O3-GeO2 systems with different chemical compositions have been investigated at temperatures 77 and 300 K. It was shown that the efficiency of generation of the electron and hole centers in glasses of both…
Zeolites NaY and ZSM-5 were used as hosts for styrene polymerization after ion-exchange with europium ions. The parent and hybrid, polystyrene coated Eu-NaY (Eu-NaY/PS) and Eu-ZSM-5 (Eu-ZSM-5/PS) zeolites were investigated by using thermal analysis, SEM, PXRD, FT-IR, DR-UV/Vis, steady state and time-resolved photolumi…
Subject of the paper are converters of lean mixtures for SI engines wi th a good efficiency of NOx reduction. Investigation of new effective catalytic mater ials having good sorptive propriet ies of nitrogen oxi des and simultaneously resistant on the ther mal destruction and chemical destruction are main aim of t he…
The effects of varying corona surface treatment on ink drop impact and spreading on a polymer substrate have been investigated. The surface energy of substrates treated with different levels of corona was determined from static contact angle measurement by the Owens and Wendt method. A drop-on-demand print-head was us…
The objective of this work was to predict the long term behavior of Polyurethane foam (PU) at very low-temperature, by applying the time-temperature superposition principle (TTSP). The experimental background of the TTSP was based on a Dynamical Mechanical Analysis technique. Two issues arise from this experimental ap…
The impact of silane on the hygrothermal stability of epoxy coatings was investigated by specular neutron reflectivity (NR). By comparing the hygrothermal degradation behavior of neat novolac epoxy coating and corresponding bis[3-(triethoxysilyl)propyl]tetrasulfide-laced epoxy coating, the role of silane was elucidate…
The processing of ZrB2-ZrC-ZrxSiy composite by reactive metal penetration was investigated as a successor to the ZrB2-SiC composites for hypersonic vehicles application, which cannot be used for extended time at temperatures greater than 1600C due to formation of SiO and CO gases. Zirconium (Zr), zirconium disilicide…
Chemical erosion of carbon materials and dust formation in low-temperature and neutral particle-dominated plasmas were investigated using high-pressure inductively coupled plasmas. Experiments were performed with Ar/H2/N2 mixture plasma irradiation to graphite targets. The addition of just a few percent of nitrogen ga…
The research into the potential uses and manipulation of nanomaterials, undertaken within PPG's research facilities, most significantly within our Global Centre of Innovation located in Allison Park, Pennsylvania, USA has made a major contribution to this development programme. PPG also has active joint development pr…
Applications of unsaturated polyester thermosetting resins are numerous in construction sector, in transport, electric spare parts manufactures, consumer goods, and anticorrosive materials. This survey reports the effect of thermosetting polymer degradation (unsaturated polyester): degradation by neutrons irradiation.…
In a postulated core melt accident, if a molten core is released outside a reactor vessel despite taking mitigation actions, the core debris would relocate in the reactor cavity region and attack the concrete wall and basemat of the reactor cavity. This will potentially result in inevitable concrete decompositions and…
The synthesis and emission spectrum control of novel Eu2+-activated amorphous alkaline earth silicate phosphors from the reduction of Eu3+-activated amorphous alkaline earth silicate phosphors is reported. The as-prepared Eu3+-activated amorphous alkaline earth silicate phosphors emitted red. Reduction using Ni-metal…
The measured coupling coefficients for 0–3 type multiferroic composites are usually inferior to the theoretical prediction. To pole these composites, it is important to inhibit the percolation of the low resistive magnetostrictive phase in a piezoelectric matrix. To yield 0–3 type composites, a synthesis process has b…
Superior ceria-zirconia (CexZr1−xO2; 1 : 1 mole ratio) solid solution was synthesised by employing a poly-block copolymer surfactant combined with microwave treatment. For comparison purpose an identical composition ceria-zirconia solid solution was also prepared by a conventional coprecipitation method. The structura…
Cyclic voltammetric studies were carried out on pure iron in alkaline borate and phosphate buffer solutions at pH 10.8. At higher potentials, on anodic polarization, iron forms FeB 4 O 7 and FeOOH in borate buffer, and FeHPO 4 in phosphate buffer which got converted to higher valency phosphates. In phosphate solutions…
Improvements developed in an electric furnace design for the production of refined ferromanganese (low carbon ferromanganese), using the Nodal Wear Model (NWM), are detailed in this paper.Likewise, the NWM can be used as an instrument which is able to simulate situations that have not yet been carried out on industria…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Ari Sulistyo Rini, Shahidan Radiman, Mohd. Ambar Yarmo; Microwave‐assisted Synthesis of Ru‐Sn/ZnO…
The possibility of synthesizing (Bi1-x La x )4Ti3O12 bismuth titanate powders in molten salts from low-melting Bi2O3 and LaCl3 was explored. The developed methodical approaches can be used for preparing titanate powders of different dispersities, promising for producing state of the art electronic components.
We created nanostructured thermoelectric Bi2Te3-family materials by high energy (ball milling) pre-treatment of the parent materials, such as p-type polycrystalline bismuth telluride with different dopants, followed by high-pressure/high-temperature treatment. Acoustic microscopy was used to study elastic properties a…
The effect of particle size distribution of SiC particulate reinforcements coated with colloidal SiO2 on Young´s modulus of Al/SiCp/MgAl2O4 composites fabricated by reactive infiltration was investigated. Composites were prepared from porous preforms of silica-coated α- SiC powders of 10, 54, 86, and 146 μm, 0.6 volum…