(219)Electrodeposition of Chromium from Trivalent Sulfate Baths. XIII. Favorable Operating Conditions.
نویسندگان
چکیده
منابع مشابه
Performance Properties of Trivalent Chromium
A trivalent chromium electroplating process has been io use commercially in North America since its introduction in 1975. Based upon years of laboratory and in-plant experience and testing, many process performance characteristics and physical properties of deposits have been determined. This paper compares the performance of trivalent chromium with hexavalent chromium processes. Factors such a...
متن کاملZinc recovery and waste sludge minimization from chromium passivation baths.
This work reports the feasibility of applying emulsion pertraction technology (EPT) aiming at zinc recovery and waste minimization in the zinc electroplating processes that include Cr (III) passivation. The assessment consists of firstly the lifetime extension of the passivation baths by selective removal of the tramp ions zinc and iron, and secondly, the recovery of zinc for further reuse. Spe...
متن کاملElectrodeposition and Characterization of Sn-Zn Alloy Coatings from Sulfate Based Baths
Tin-Zinc alloy coatings have many applications because of their unique properties such as corrosion resistance, solderability and flexibility. In this study, the effect of current density, temperature and pH on chemical composition, cathodic current efficiency, morphology and structures of the coatings was investigated. The results illustrated that, at low current densities (<0.5 mA/cm2), the c...
متن کاملELECTRODEPOSITION OF Ni-Fe ALLOYS FROM SULFATE, SULFATE-CHLORIDE AND CHLORIDE BATHS
In an attempt to control the film composition, factors affecting the composition of Ni-Fe alloy deposits and their crystal structure have been analyzed as a function of bath composition, cathode current density, bath pH, temperature and an addition of citric acid. antimony electrode revealed that the deposition potential of Fe coincides with the potential where the abrupt increase of pH was obs...
متن کاملThe Effect of Trivalent Chromium on Galactose Entrv
Trivalent chromium, recently identified as the active ingredient of the glucose tolerance factor, appears to be a dietary agent required for maintenance of normal glucose tolerance in the rat. The element, applied in the form of certain coordination complexes, prevents impairment of removal rates of intravenously injected glucose in rats on rations deficient in glucose tolerance factor, and it ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Society of Chemical Industry, Japan
سال: 1953
ISSN: 0023-2734,2185-0860
DOI: 10.1246/nikkashi1898.56.474