The Determination of Trivalent Chromium in Chromic Acid and in Chromium Plating Baths

1935 ◽  
Vol 67 (1) ◽  
pp. 347 ◽  
Author(s):  
Hobart H. Willard ◽  
Philena Young
Keyword(s):  
Chromic Acid ◽  
Trivalent Chromium ◽  
Chromium Plating

Determination of trivalent chromium in chromium plating electrolytes

1995 ◽  
Vol 93 (5) ◽  
pp. 12-18 ◽  
Author(s):  
S. Nikolova ◽  
T. Dobrev ◽  
M. Monev
Keyword(s):  
Trivalent Chromium ◽  
Chromium Plating

Trivalent chromium plating

1980 ◽  
Vol 6 (3) ◽  
pp. 222-222 ◽  
Author(s):  
D. Burrows ◽  
M. A. Cooke
Keyword(s):  
Trivalent Chromium ◽  
Chromium Plating

Trivalent chromium electrodeposition using a deep eutectic solvent

2018 ◽  
Vol 65 (5) ◽  
pp. 499-505 ◽  
Author(s):  
Vyacheslav Protsenko ◽  
Lina Bobrova ◽  
Felix Danilov
Keyword(s):  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Diffraction Method ◽  
Trivalent Chromium ◽  
Electrolytic Deposition ◽  
Active Dissolution ◽  
Plating Bath ◽  
Content Type ◽  
Chromium Plating ◽  
New Generation

Purpose This paper aims to investigate the electrolytic deposition of corrosion-resistant chromium coatings from a trivalent chromium plating bath based on deep eutectic solvent, a new generation of room temperature ionic liquids. Design/methodology/approach The electrolyte contained chromium (III) chloride, choline chloride and the additive of extra water. The surface morphology was estimated by means of SEM technique. The microstructure of as-deposited and annealed coatings was studied using X-ray diffraction method. The kinetics of the chromium electrodeposition and the corrosion electrochemical behavior of the coatings were investigated by cyclic voltammetry technique. Findings Chromium coatings with an amorphous type of microstructure are electroplated from this bath. Some carbon and oxygen are included in deposits obtained. The step-wise mechanism of the electrochemical reduction of Cr(III) ions to Cr(0) is detected. The current efficiency in this system sufficiently exceeds that typical of usual aqueous electrolytes. The coatings fabricated using plating bath based on deep eutectic solvent showed enhanced corrosion resistance in an acidic medium: there is no current peak of active dissolution in polarization curve and the corrosion potential shifts to more positive values as compared with “usual” chromium. Originality/value The electrodeposition of chromium coatings from an environmentally acceptable trivalent chromium electrolyte, a deep eutectic solvent containing chloride choline and extra water additive has been investigated for the first time.

A Direct Determination of Rubber Hydrocarbon. Chromic Acid Oxidation Method

1943 ◽  
Vol 16 (3) ◽  
pp. 660-667 ◽  
Author(s):  
V. L. Burger ◽  
W. E. Donaldson ◽  
J. A. Baty
Keyword(s):  
Acetic Acid ◽  
Chromic Acid ◽  
Direct Determination ◽  
Acid Oxidation ◽  
Laboratory Procedure ◽  
Oxidation Method ◽  
Chromic Acid Oxidation

Abstract A method for the direct determination of rubber is reported. This method utilizes the property of rubber hydrocarbon when oxidized by chromic acid to form definite and reproducible amounts of acetic acid. This determination has been reduced to a comparatively simple laboratory procedure, whose accuracy (in the absence of interferences) is 1 to 2 per cent.

Study on the Electrodeposition of Trivalent Chromium Plating Bath in the Presence of Oxalate Anions

2020 ◽  
Vol MA2020-01 (20) ◽  
pp. 1247-1247
Author(s):  
German Orozco ◽  
Julieta Torres-González ◽  
Dennys Fernandez
Keyword(s):  
Trivalent Chromium ◽  
Plating Bath ◽  
Chromium Plating
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