Due to their excellent physical and mechanical properties, third-generation super-hard semiconductor materials (such as SiC, GaN) are used widely in the field of microelectronics. However, due its ultra-high hardness, machining is very difficult, which has become bottleneck development. Slicing first procedure that directly affects subsequent process. Fixed abrasive diamond wire saw (DWS) been ...

Wireless signals are inherently generated during the spark discharges of micro-electro-discharge machining (μEDM). This work harnesses signals between 300-750 MHz for the monitoring of batch mode machining quality. In particular, the wireless spectra are used to sense incipient, debris-dominated machining that can be destructive to both the tool and the workpiece. Planar stainless steel (316L) ...

Supercapacitors (SCs) have received much interest due to their enhanced electrochemical performance, superior cycling life, excellent specific power, and fast charging–discharging rate. The energy density of SCs is comparable batteries; however, power cyclability are higher by several orders magnitude relative batteries, making them a flexible compromising storage alternative, provided proper d...

The influence of alloying element S, Se or Te on the oxidation resistance of pure Cu was studied by oxidizing in 0.1 MPa pure oxygen atmosphere at 573-873 K in comparison with a 6N Cu (99.9999 wt.%). The addition of S, Se or Te is found to improve the oxidation resistance of Cu remarkably. This improvement is contributed from the accumulation of alloying element at the Cu2O/Cu interface and seg...

Abstract. In the present work, hot deformation behavior of AlCr0.2FeNbMoTiV2 refractory high-entropy alloy was studied by means its constitutive modeling. The samples were fabricated using mechanical alloying and spark plasma sintering, resulting in an ultrafine-grained microstructure consisting a main bcc solid solution, Laves phase, TiC Al2O3 precipitates. Compression tests between 950 1100 º...

Purpose. Determination of rational parameters the process electrospark alloying 40X steel parts with different types electrodes. Measurement applied layer thickness using Mora Primus 564 coordinate measuring machine at customer's plant. To give recommendations on use processing modes in production when restoring parts. Research methods are based effective treatment metal surfaces and technology...

in isobaric models for inertial confinement fusion it is assumed that the target configurationat stagnation time (maximum compression) consists of two regions, hot spark and cold fuel, respectively.here the conditions of spark formation and ignition in hydrogen equimolar isotopes in central sparkignition are investigated and permissible values of hs and ts are evaluated numerically. by introduc...