Investigation of correlation between physical properties and microstructure geometrical parameters of Cr-Cu composite material used for vacuum arcing contacts
Journal Title: Mining – Informatics, Automation and Electrical Engineering - Year 2016, Vol 526, Issue 2
Abstract
A new microstructure quality index is proposed, suitable for Cr-Cu system metal-matrix materials used for arc-suppressing electrical contacts of vacuum switches for high voltages (10-36 кV) and high currents (20-100 кА). Based on the example of some physical properties of the Cr-50Cu composite and its microstructure geometrical parameters it was shown that there is strong correlation between the strengthening phase distribution character, electrical conductivity and mechanical characteristics obtained under the strain test. It was ascertained that the proposed index of accordance of structure to the regular one, rationed to the size of strengthening phase particles and fractal dimension of material microstructure, were strongly related to yield strength and electric conductivity (correlation coefficient reaches 0.98 ... 0.99).
Authors and Affiliations
A. Khomenko, E. Khomenko, G. А. Bagliuk, Bogdan Miedziński, Artur Kozłowski
Keywords
Related Articles
- EP ID EP283386
- DOI -
- Views 135
- Downloads 0
Selected terms used in ”mining telecommunications”
At the beginning of the paper the author pointed out that in many publications which describe technical solutions applied in telecommunications systems and devices for underground mines there are terms which belong to th...
Robotics in mining exemplified by Mobile Inspection Platform
The paper presents the Mobile Inspection Platform (MPI) – the innovative solution in the area of safety in underground coal mining. The robot is equipped with devices and sensors that allow the safe exploration and monit...
Control of hydrogen concentration in the power supply and control systems of a mining battery locomotive with energy recuperation applied
Better efficiency of mining machines is one of the major objectives pursued by developers, manufacturers and users, as it refers directly to functional and economic aspects of these machines exploitation. In the case of...
Innovative solution of coal slurry mixer
During the coal-enrichment process in mechanical processing plants, fine-grained high-moisture coal slurries are produced. These waste products may be used in energetic blends after a special moisture-reducing treatment....
Systems and tracks of self-powered suspended monorails for transportation of people in horizontal workings and workings with inclination up to 45°
The article presents the number of transport systems and the length of the routes on which people are transported in Polish mines. A legal status in Poland and China and the guidance of the Regional Office of Arnsberg in...