Materials Literature
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Nowadays it is very important to use non-oriented electrical alloys, which must have a very good quality and must be cut through a proper method that leads to a minimum energy loss value. The manufacturers of the electrical machines want to minimize the damage of the magnetic properties during the cutting process, in…
Progress on the development of an insulation defect detection and location system using a partial discharge (PD) wireless sensor network (WSN) will be presented. Such a PD WSN based on intensity-only measurements has cost and scalability advantages over existing detection and location technologies based on time-differ…
x-ray scattering, etc.
Quality control and failure analysis of IC packages require physical access to the die during destructive analysis. Successful analysis depends on the critical preservation of the original state of the die, bond wire, bond pad, and original failure sites during the package decapping process. The currently used acid an…
The inhibiting action of some p -aminoazobenzene derivatives towards the corrosion behavior of stainless steel type 316L in 3M HCl has been studied using weight loss, galvanostatic and potentiodynamic anodic polarization techniques. The inhibition efficiency of the investigated compounds was found to increase with inc…
Dimensional instability, more particularly its component hygroexpansivity, may cause problems in process or end-use situations in which paper or board is in contact with water or subject to changes in ambient relative humidity. Misregistration in printing, curl during copying and calender wrinkles are examples of such…
The paper deals with evaluation of relation between individual parameters of roughness of the blasted surfaces by the correlation analysis. Based on the measured values on the surfaces which were blasted by various types of blasting devices, the correlation matrix was set and the standard of statistic importance of co…
This paper reports the study of crumb rubber drying in different experimental designs. It is important to understand the characteristics of crumb rubber drying in order to formulate a better drying strategy that could give higher energy efficiency. Four experiments were carried out with constant heat at maximum 100 °C…
The motion of a three phase contact line, as in a droplet spreading over a dry surface, is ubiquitous in nature and common in technology, but is still not well understood. As has been recently shown, line friction may play an important role in rapid dynamic wetting. Recognizing this as a sometimes dominating factor, w…
An investigation on the galvanic corrosion of dissimilar metals in CO2/H2S environments to simulate annulus pressure between casing and tubing string in sour gas well was conducted by methods of electrochemical measurement technique, high-pressure and high-temperature corrosion test and corrosion scale analysis. When…
Requirements for high availability and low maintenance costs in electrical machines and drives are leading to various methods of on-line health monitoring. This paper establishes a link between standard groundwall winding insulation monitoring methods based on dissipation factor measurement and behavior of the insulat…
A scanning vibrating capacitor (SVC, Kelvin probe) is used to study hydrogenation of iron and steel under the conditions of atmospheric corrosion. It is shown that hydrogen that forms in the course of corrosion or under cathodic polarization diffuses through the membrane and interacts with its opposite side, causing a…
The ultrathin, ternary nickel cobaltite (NiCo2O4) nanosheets supported on Nickel foam (NF) were prepared via a facile two step process, which includes electrodeposition method combined with a thermal treatment. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) characterisation of as-pre…
Vertically aligned arrays of aluminum (Al) nanorods were fabricated by glancing angle deposition (GLAD) method. Nanorods with maximum lengths of 200 and 350 nm were grown on 100 nm flat Al thin film. Total and diffuse reflectance profiles were measured using an ultraviolet–visible–near infrared (UV-Vis-NIR) spectropho…
The role of grain size and porosity in the piezoelectric and elastic properties of SiO 2 -based materials was investigated using resonant piezoelectric spectroscopy (RPS) and resonant ultrasound spectroscopy (RUS). RPS performed on agate revealed a piezoelectric effect comparable in magnitude to that in single-crystal…
The design of a piston pressure cell ranging up to approximately 11 kilobars is reported, which allows for optical reflection measurements in the infrared spectral range from 100 to 8000 cm(-1) down to temperatures as low as 6 K. The mechanical alignment and vacuum considerations are discussed before details of the sa…
The effect of the liner material density and elongation on the shape of dual mode penetrators is studied by using the LS-DYNA software. Characteristics of liners made of five types of materials (aluminum, pure iron, copper, tantalum, and tungsten) under the same conditions of the liner volume or liner mass are compare…
Thermal conductivity of ferroelastic device materials can be reversibly controlled by strain. The nucleation and growth of twin boundaries reduces thermal conductivity if the heat flow is perpendicular to the twin wall. The twin walls act as phonon barriers whereby the thermal conductivity decreases linearly with the…
For advanced process technologies as in FinFET or FDSOI, the current density increases while the wire width and spacing get reduced, leading to higher ΔT on wires due to self-heating and strong thermal coupling among wires. This impacts chip reliability and performance. Also, since the traditional methodology of using…
A black ceramic coating was prepared on AZ91D magnesium alloy by plasma electrolytic oxidation (PEO) with reduced energy consumption in an electrolyte containing sodium silicate (Na2SiO3), sodium hexametaphosphate ((NaPO3)6), ammonium metavanadate (NH4VO3) and sodium citrate (C6H5Na3O7). The results showed that with t…