Synergism of Saccharum officinarum (sugarcane) and Ananas comosus (pineapple) extract additives on the quality of electroplated zinc on mild steel in acid chloride solution was investigated experimentally at ambient temperature (*28 C). The experiments were performed at different plating times (15 and 18 min), additive concentrations (2, 2.5, 3 ml/50 ml of acid chloride solution), pH 5, tempera...

The fatigue behavior of Gray Cast Iron is affected to its microstructure, strength, ductility, residual stress and surface roughness etc.... In general, fatigue life increase as the magnitude of surface roughness decrease or the surface hardness increases by surface treatment. As the consequence of conducted high temperature oxidation in subsurface layer of cast iron pores have been creating, c...

The continuous and rapid increase of areal density in magnetic data storage systems required a continuous increase of the coercivity of the storage media. In order to be able to record on these everhigher-coercivity media, new soft magnetic materials for pole tips with increased magnetic moment had to be developed. Significant progress has been made during the last few years in electroplating a...

OBJECTIVES White spots and enamel demineralization around orthodontic brackets are among the most important complications resulting from orthodontic treatments. Since the antibacterial properties of metals and metallic particles have been well documented, the aim of this study was to assess the antibacterial effect of stainless steel orthodontic brackets coated with silver (Ag) particles. MAT...

Electroplating sludge is the hazardous waste discarded from plating and extractive metallurgical process which can only be disposed of at a secured landfill. In this study, physical mechanical properties, as well metal leaching analysis, fired clay brick incorporated with electroplating (0%, 2%, 4%, 6%, 8% 10%) were determined. The properties bricks, such firing shrinkage, dry density, initial ...

The United States Environmental Protection Agency (EPA) intends to add either chromium or hexavalent chromium to the list of hazardous air pollutants under Section 112 of the Clean Air Act. A preliminary assessment performed by EPA has identified several categories of stationary sources as emitters of significant quantities of chromium to the atmosphere and for which the proposal o f national e...

Damascene Cu electroplating for on-chip metallization, which we conceived and developed in the early 199Os, has been central to IBM's Cu chip interconnection technology. We review here the challenges of filling trenches and vias with Cu without creating a void or seam, and the discovery that electrodeposition can be engineered to give filling performance significantly better than that achievabl...

A tetrode is a bundle of four microwires that can record from multiple neurons simultaneously in the brain of a freely moving animal. Tetrodes are usually electroplated to reduce impedances from 2-3 MΩ to 200-500 kΩ (measured at 1 kHz), which increases the signal-to-noise ratio and allows for the recording of small amplitude signals. Tetrodes with even lower impedances could improve neural reco...

Hydrogen embrittlement of SK85 high-strength steel sheets was evaluated through a three-point bending test. The effects electroless Ni–P plating and Ni electroplating on hydrogen were examined with respect to the permeability plated films. On morrow plating, indicates high degree embrittlement, irrespective phosphorus content in film. However, is further suppressed than that which can be attrib...

hazards of soluable hexa and trivalent chromium have been documented by many investigators. but there was no information regarding safety of about 5000 workers at exposure risk to chromium in 600 primitive electroplating work shops of tehran. during this study more than 70% of work shops were inactive due to some of their own problems. out of active plants those that were relatively more cooper...