Effect of ZrB Content on the Properties of Copper Matrix Composite.

This study examined the physical, mechanical, tribological, and corrosion properties of copper metal matrix composites reinforced with zirconium diboride (ZrB). Cu-xZrB composites (x = 0.5, 10, 15, 20 wt.

Corrosion Resistance of Nickel-Aluminum Sinters Produced by High-Pressure HPHT/SPS Method.

As part of extensive research on the properties of nickel-aluminum alloys, corrosion tests of sintered materials produced by the innovative HPHT/SPS (high pressure, high temperature/spark plasma sintering) method were performed in 0.1 molar HSO acid. The hybrid, unique device used for this purpose (one of only two such devices operating in the world) is equipped with a Bridgman chamber, which allows heating with high-frequency pulsed current and sintering of powders under high pressure in the range of 4-8 GPa and at temperatures up to 2400 °C.

Determination of the Dielectric Constant of Niobium Oxide by Using Combined EIS and Ellipsometric Methods.

Combining ellipsometric and EIS methods, the dielectric constant ε for the oxide NbO at room temperature was determined. At first, the linear dependence between anodization voltage and oxide thickness was established in the form = 2.14 (± 0.

The Pressure Compaction of Zr-Nb Powder Mixtures and Selected Properties of Sintered and KOBO-Extruded Zr-xNb Materials.

Materials were obtained from commercial zirconium powders. 1 mass%, 2.5 mass% and 16 mass% of niobium powders were used as the reinforcing phase.

[Large trade clusters as areas of intensified occurrences of states of rapid health worsening in Poland].

Introduction: In the modern world, people gather more increasingly in large clusters such as shopping centres, markets, cinema centres, operas, ferries, liners, recreation areas and resorts. Such clusters predispose to intensified occurrences of states of rapid health worsening and health hazard.

The Aim: The main aim is to indicate that in trade space, especially in municipal markets, states of rapid health worsening and health hazard appear, as well as to characterize the individual incidents and types of medical interventions.