Materials Literature
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Cement addition, water addition and wet curing period are selected as the effects on cold modulus of rupture and cold crushing strength of one LCRC. According to the molding morphologies of the castables, when the water addition is 8 wt. %, the castable is suitable to be cast by vibration fashion, and the high strengt…
Nonepitaxially grown FePt (x)/FePt:C thin films were synthesized, where FePt (x) (x=2, 5, 8, 11, 14 nm) layers were served as underlayers and FePt:C layer was nanocomposite with thickness of 5 nm. The effect of FePt underlayer on the ordering, orientation and magnetic properties of FePt:C thin films has been investiga…
The susceptibility to stress corrosion cracking (SCC) and galvanic corrosion of an aeroplane pipe made of 1Cr18Ni9Ti connected with a pipe coupling that made of Ti-Ni-Nb shape memory alloy were evaluated. SCC test was completed under simulated service environment in 6% NaCl solution through a self-designed corrosive s…
In this study, KNbO3-substituted (Li,Na,K)(Nb,Sb,Ta)O3 ceramics were investigated to develop Pb-free composition ceramics for multilayer actuator and energy harvester applications. The X-ray diffraction analysis indicated that all samples were pure perovskite phase and no secondary phase was found. A tetragonality as…
We expressed the resistance between the origin and any lattice point in an infinite perfect Simple Cubic (i.e., SC) network rationally in terms of the known value of the Lattice Green's Function at the origin (i.e., ), and . On the other hand, we investigated the asymptotic behavior of the resistance. Finally, some nu…
A thermodynamic model of the loading diagram for the standard sample as an open system, which has critical points of second-order phase transitions with the formation of dissipative structures (by Prigozhin) and excludes the angular points, is suggested. The model is based on three postulates: the reversible nonlinear…
Weld parameter is an important factor affecting micrographic structure and mechanical properties of weld joints. It was investigated by metallographic experiments and mechanical property experiments for the influence of weld heat input on dissimilar steel weld joint of penstock using B610CF and 16MnR steel in water co…
Micro-particles and nano-wires, small outgrowths were found to appear on upper film surface when metal thin film is confined between two Si3N4 layers deposited by magnetron sputtering and is annealed at an appropriate temperature. The stress evolution during this process is monitored by multi-beam optic stress sensor,…
Fermented tapioca which is a new starting material was used as a carbon precursor. Carbon nanotubes (CNTs) were deposited on silicon wafer (Si) by Thermal Chemical Vapor Deposition (TCVD). The gas flow of Argon (Ar) was constant at 70 bubbles per minute and 20 minutes of deposition time. Before the deposition process,…
Charging of polymeric samples with grounded metal layer is studied by two main schemes of experiment. In the first scheme, a polymer film is irradiated with the low-energy electrons with energy of 20–40 keV under conditions of absence of grounded metal objects nearby. It is demonstrated that development of breakdown i…
Hybrid bulk hetero-junction solar cells were fabricated by blending [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and conjugate poly(3-hexyl thiophene) (P3HT) polymer. The effects of annealing and the incorporation of CdSe nanoparticles (NPs) on the device performance were investigated. Annealing and CdSe NP incor…
Most of the industry oriented research and development is based on conventional casting alloys Al-Si. This paper presents the results of deformation the hypoeutectic AlSi7Mg alloy used to manufacturing pistons for combustion engines. This is the material about high plasticity and corrosion resistance. For the research…
The movability of nonequilibrium unthermolized vacant electron sites does not depend on temperature in ZnS crystals, assuming that their energy in ZnS crystals is much higher than the temperature’s contribution to energy, and dissipation mechanisms are dominated by scattering by ions, neutral impurities, and defects.
A systematic series of experiments was performed to determine the optimum firing schedule of Y2O3. A two-step sintering with subsequent profile succeeded to fabricate Y2O3 ceramic with the relative density of 97.6% and the average grain size of 0.46 μm: first step and second step temperature of T1 = 1490 °C and T2 = 1…
In this research, substrate materials have been used for the production of the absorbed layer of salor cell–CuInSe2 films. The microstructures of CuInSe2 films have been studied through X-ray diffraction and scanning electron microscopy. Surface character and optical properties of CuInSe2 films have been investigated…
The dependence of the charge induced at the anode of a flat grid ionization chamber on the grid shielding inefficiency and the mean free path of electrons before their capture by an electronegative impurity is analyzed. The cases of point ionization and ionization in the form of a track of a charge particle from the s…
The drawing of 12X18H10T stainless-steel wire with a cupronickel coating and cadmium-plated carbon-steel wire is considered. The quality of zinc-plated carbon wire is shown to depend on the drawing temperature, which must be stable.
New layered metal-organic coordination polymers [Zn 3 (bpdc) 3 (DMA) 2 ]·3DMA ( 1 ) (H 2 bpdc = 4,4′-biphenyldicaboxylic acid, DMA = N,N ′-dimethylacetamide) and [Zn 3 (bdc) 3 (im) 2 ]·1.5H 2 O ( 2 ) (H 2 bdc = terephtalic acid, im = imidazole) are synthesized and characterized by X-ray crystallography.
Serving as an important thermal segregation material for air and space vehicles, zirconium diboride has to suffer ultra-high-temperature that might be over 2700°C. However, the highest working temperature we can achieve for the testing of the mechanical properties of such kind of materials is less than 1500 °C. Moreov…
The aim of the work was the assessment of adsorption capabilities of selected animal mucins. In this work two animal mucins (mucin porcine stomach, type II and III), which were dissolved in phosphate buffered saline were evaluated. The tested materials, where the adsorption of glycoproteins takes place, were surfaces…