منابع مشابه
A New Method for Electroplating of Crack-Free Chromium Coatings
In this study, different amounts of MoS2 particles and an anionic surfactant were added to the conventional chromium electroplating bath in order to electrodeposite crack-free chromium coatings and the structure, morphology, tribology and corrosion behavior of the deposited coatings were investigated using X-ray diffraction spectroscopy, scanning electron microscopy, pin on disk ...
متن کاملPreliminary Assessment of Chromium Emissions from Chromium Electroplating Faci Lities
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...
متن کاملSelective separation of chromium (III) from electroplating effluents by ion-exchange processes
This work reviews the application of the ion-exchange technology to treat industrial effluents containing heavy metals and presents results on the uptake of Cr (III) from aqueous solutions using the polyfunctional chelating exchange resin Diphonix. Some industrial samples of effluent collected in an electroplating industry were characterized in what respects metals, total suspended and dissolve...
متن کاملExtraction and recovery of chromium from electroplating sludge.
This work reports a study of the extraction and recovery of chromium from the wastes (class I dangerous) generated by a galvanic manufacturer. Commercial HCl at room temperature was employed, and the conditions of the extraction process were optimized according to a sequential experimental design, which also included the acid concentration and contact time as variables. The best extraction cond...
متن کاملPretreatment of Gray Cast Iron for Hard Chromium Electroplating (RESEARCH NOTES)
From the standpoint of processing, hard chromium layer plate may be applied to steels, cast iron, aluminum and nickel base alloys. Cast iron can be plated provided that the surface is capable of conducting the required current and is reasonably free of voids, pits, gross silicate inclusions, and massive segregation. There are many difficulties arising from graphite phase and deposition of hydro...
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ژورنال
عنوان ژورنال: Journal of The Surface Finishing Society of Japan
سال: 2018
ISSN: 0915-1869,1884-3409
DOI: 10.4139/sfj.69.237