A mercury plating technique was used to determine the phases forming on experimental Ag-Sn-Cu alloy powders (with and without Pd) exposed to electrolytically deposited mercury. Four series of alloy powders were made: a) 1.5% Pd with 10-14% Cu (CU series); b) 1.0% Pd with 10-14% Cu (1PD series); c) 1.5% Pd with different ratios of Ag3Sn (gamma) to Ag4Sn (beta) with 12% Cu (AGSN series); and d) 9...

We analyze the general phenomenon of induced-charge electro-osmosis (ICEO), nonlinear electroosmotic slip generated when an electric field acts on its own induced charge around a polarizable surface, in the context of microfluidics. Simple ICEO flows are first observed around a platinum wire in a polymer microchannel. While convenient for scaling analysis of resulting flows, this geometry prove...

in this study, taguchi experimental design has been used for the optimization of thickness of chromium layers. for this purpose brass materials have been electroplated under various conditions of the process. an orthogonal array (oa) was employed to analyze the effect of plating parameters on the characteristic of the thickness. variables which were considered for working were as following; amo...

nanostructured alumina thin films were coated on stainless steel by sol-gel dip coating method. in order to prevent crack formation, al2o3 films were kept in a solvent bath immediately after coating to reduce the rate of drying. effects of calcination temperature and withdrawal speed on structural properties were analyzed using xrd and sem. topography and thickness of coatings were analyzed by ...

Isotope fractionation of electroplated Fe was measured as a function of applied electrochemical potential. As plating voltage was varied from 0.9 V to 2.0 V, the isotopic signature of the electroplated iron became depleted in heavy Fe, with Fe values (relative to IRMM-14) ranging from 0.18( 0.02) to 2.290( 0.006) ‰, and corresponding Fe values of 0.247( 0.014) and 3.354( 0.019) ‰. This study de...

Norman A. Fleck W. I. Milne University of Cambridge Department of Engineering Cambridge, CB2 1PZ United Kingdom Abstract. The in-plane motion of microelectrothermal actuator (‘‘heatuator’’) has been analyzed for Si-based and metallic devices. It was found that the lateral deflection of a heatuator made of a Ni metal is about ;60% larger than that of a Si-based actuator under the same power cons...