Arc stability characterization of double coated electrodes for hardfacing

The aim of this work is to establish the influence of the relative position of the alloy charge C-Cr-Mn in the structure of the coating of rutile electrodes for hardfacing, on the operational behavior (arc stability). For this, three variants of electrodes with similar chemical composition are elaborated in the metallic core and the coating, differentiating only in the relative position that occupies the alloy charge (C-Cr-Mn) in the structure of the coating: internal, external and homogeneous. For the development of the research a completely random design is used. The operative characterization of the electrodes is performed in terms of the arc stability. In conclusion, it can be seen that the position of the alloy load influences the operation behavior (stability of the arch). The variant of internal alloy charge in the coating presents the better arc stability performance.

Kemampuan Induktansi pada Material Inti Logam Induktor Besi Cor ASTM A48, Nichrome dan Monel Alloy 400 Terhadap Variasi Input Listrik dan Lilitan

Inductor with a metal core is a component which is almost always present in the daily electronic device known to us . To further prove the potential of the proposed new metalcore material, it is necessary to test the voltage variation, winding, and frequency in the inductor with the newly proposed metallic core material. The research method uses experimental methods. Three basic metal materials were used in the experiment, those are Cast Iron ASTM A48 (C 3.4%, Mn 0.5%, Si 1.8%,), Nicromine (Ni 80%, Cr 20%), Monel Alloy 400 (Ni 63%, Cu 31.7%, C 0.3%, Fe 2.5%, Si 0.5%, Mn 2%, S 0.024%). Experimental tests on these new types of metal were also carried out under various stress, winding, and working frequency conditions. The voltage variation selected is 4.5 V - 24 V, the winding variations and frequencies selected are 150 to 1000 turns and 50 Hz. The greatest inductance was obtained from ASTM A48, Fe, Monel Alloy 400, Nikromic, and without metallic core on the specified indicator variables. As the voltage increases and the number of turns increases, the inductance value increases.

Gallium chiral nanoshaping for circular polarization handling

Core/shell nanohelices with VIS-CD are grown using FIBID, with the Ga+ source shaping the metallic core and the gas precursor the dielectric shell

A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes

Shell-isolated nanoparticles (SHINs) have attracted increasing interest for non-interfering plasmonic enhanced sensing in fields such as material science, biosensing and in various electrochemical systems. The metallic core of these nanoparticles...