Developing the software and hardware complex to diagnose the ascent of gas bubbles in a liquid metal by the Doppler anemometry method

The complex method of ultrasonic diagnostics of two-phase flows in a liquid metal medium is developed. It allows measuring the dynamic and structural characteristics of the floating inhomogeneity. A software and hardware complex that implements the proposed method is developed and tested for ultrasonic diagnostics of two-phase flows in water and liquid metal medium.

A stop-band filter based on metal-medium-metal structure with molecular J-aggregates

A stop-band filter is discussed based on the strong coupling-like phenomenon in metal-insulator-metal (MIM) structures involving molecular J-aggregates. The structure is composed of a [Formula: see text]-shaped resonator, an input waveguide and an output waveguide. The finite element method (FEM) method is employed in simulation. The results show that the strong coupling phenomenon appears with the Molecular J-aggregates. The small variations in size of the whole structure have little effect on stop bandwidth of the transmission spectrum and the stop bandwidth of the transmission spectrum in the designed structures is mainly determined by the oscillation strength of molecular J-aggregates. The larger the oscillation length of molecular J-aggregates part is, the wider the stop-band is.

The Application of Chitosan-Based Compounds against Metallic Corrosion

Biopolymers-based compounds were used by different manners for metal protection toward corrosion phenomena, namely via inhibiting additive and coating strategies. In the last decade, the application of these compounds or their chemically modified forms as effective replacements for toxic inorganic and organic inhibitors attracts more attention. Additionally to their intrinsic chemical stability, biodegradability, eco-friendly, low cost and renewability, biopolymers set were shown the remarkable effect to control the dissolution of several metallic materials in various corrosive environments. Among a large variety of available biopolymers, chitosan and its functionalized form, as well as its nanoparticle composites, have been reported and widely used as good anti-corrosion compounds for different metal/medium systems. In this context, the current chapter aims to shed more light on this subject.

Increase of Durability of Austenitic Steel by Overlap of Carburization and Diffusion Saturation from Liquid Metal Medium Solutions Technologies

This paper investigated the overlap of carburization and diffusion saturation from liquid metal medium solutions technologies. The carburization of austhenic steel able to increase of its wear resistance and microhardness to 700HV. But this kind of treatment provided to reduction of corrosion resistance. This effect conditioned by formation of chromium carbides, herewith austenite of steel impoverished of chromium. This paper proposes the new technology lets increase the durability of asthenic steels, using carburization and diffusion saturation in eutectic Pb-Bi-Li medium with adding of nickel and chromium. The most effective technology consisted of previous carburization, diffusion saturation and final carburization. First carburization provided to increase of surface layers microhardness to 2800 MPa, diffusion saturation to 7500 MPa, the final carburization to 19500 MPa. The properties of coating depended of combination of technological impact and technological modes of every stage of technological process: temperature and duration. The temperature influenced to microhardness of coating: when the temperature increased microhardness decreased. The duration of diffusion saturation influenced to thickness of diffusion layer: when the duration increased the thickness increased too

Eutectic crystallized FePd nanoparticles for liquid metal magnet

A liquid metal magnet achieved by eutectic-grown FePd nanoparticles in a gallium liquid metal medium.