High-Voltage Pulse-Assisted Electrochemical Machining

Laser Drilling Assisted with Jet Electrochemical Machining

Microwave-assisted synthesis of high-voltage nanostructured LiMn1.5Ni0.5O4 spinel: tuning the Mn3+ content and electrochemical performance.

The LiMn1.5Ni0.5O4 spinel is an important lithium ion battery cathode material that has continued to receive major research attention because of its high operating voltage (∼4.8 V). This study interrogates the impact of microwave irradiation on the Mn(3+) concentration and electrochemistry of the LiMn1.5Ni0.5O4 spinel. It is shown that microwave is capable of tuning the Mn(3+) content of the sp...

High voltage pulse generation - Electronics Letters

Going beyond the analysis, a more sensitive measure of exponential decay is -&I/€ = d[ln &(x)]/dx. This is 1 times the x-dependent slope (in dB/cm) of &(x) when graphed in dB. Thus, -&I/€ is the local exponential decay rate of &. For the pulses of Figs. 1 and 2, the computed -&I/& varies from 1185-1257/m (51-55 dB/cm) for the first 60 dB of energy attenuation. This is in the range [ 2 y , 2 y ]...

Investigation into Current Efficiency for Pulse Electrochemical Machining of Nickel Alloy

Electrochemical machining (ECM) is a nontraditional manufacturing process that can machine difficult-to-cut materials. In ECM, material is removed by controlled electrochemical dissolution of an anodic workpiece in an electrochemical cell. ECM has extensive applications in automotive, petroleum, aerospace, textile, medical, and electronics industries. Improving current efficiency is a challengi...

Etch Trends in Electrochemical Machining with Ultrashort Voltage Pulses Predictions from Theory and Simulation

We present analytical and computational models used to investigate the dependence of etch resolution on pulse duration, tool radius, and etched feature aspect ratio in electrochemical machining with ultrashort voltage pulses. Our results predict that, for the high aspect ratio system in which the effect of trench top and bottom edges can be ignored, the increase of etch resolution with pulse le...