Electrochemical discharge micro-machining (micro-ECDM) has the ability to machine electrically nonconducting materials as compared with different existing traditional and also non-traditional machining processes. This paper deals with the effects of different process parameters like applied voltage (V), electrolyte concentrations(wt%), pulse frequency and duty ratio on different machining perfo...

Electrochemical migration (ECM) of sintered nano-Ag could be a serious reliability concern for power devices with high-density packaging. An anti-ECM nano-Ag-SiOx paste was proposed by doping 0.1wt% SiOx nanoparticles rather than previously used expensive noble metals, e.g., palladium. The ECM lifetime the 1.5 to 3 times longer that nano-Ag, due fact protect Ag from oxidation. thermo-mechanical...

The weak formulation of moving boundary problems with possibly vanishing specific heat, that is governed by parabolic and/or elliptic differential equations, is developed. The uniqueness of the resulting weak solution is then proved. This approach is used to obtain numerical solutions to some physical examples, which arise in electrochemical machining processes, and in saturated / unsaturated f...

In this paper a hybrid circuit is presented which comprises nanoelectronic resistive switches based on the electrochemical memory effect (ECM) as well as devices from a standard 40nm-CMOS process. A closed ECM device model, which is based on device physics, was used for simulations allowing for a precise prediction of the expected I-V characteristics. The device is used as a non-volatile and/or...

Title of Document: EVALUATION AND MODELING OF ELECTROCHEMICAL MIGRATION ON PRINTED CIRCUIT BOARDS Xiaofei He, PhD, 2014 Directed by: George Dieter Chair Professor Michael G. Pecht, Assistant Research Scientist Michael H. Azarian, Department of Mechanical Engineering Electrochemical migration (ECM) is the growth of conductive metal filaments on a printed circuit board (PCB) through an electrolyt...