scholarly journals Determination of Cr3+ in The Chromium Plating Bath by EDTA Titration

1963 ◽  
Vol 14 (4) ◽  
pp. 147-148
Author(s):  
Osamu CHIBA ◽  
Tsutomu MIYAJIMA
Keyword(s):  
Plating Bath ◽  
Edta Titration ◽  
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.

Chromium Plating Bath for Self-regulating Fluorosilicate

1973 ◽  
Vol 24 (8) ◽  
pp. 454-460
Author(s):  
Saburo KONISHI ◽  
Mitsuaki TADAGOSHI ◽  
Yasutaka KUBOTA
Keyword(s):  
Plating Bath ◽  
Chromium Plating

scholarly journals Indirect determination of pH in electroless copper plating bath by spectrophotometry.

1985 ◽  
Vol 36 (7) ◽  
pp. 289-290
Author(s):  
Shozo MIZUMOTO ◽  
Hidemi NAWAFUNE ◽  
Motoo KAWASAKI ◽  
Akemi KINOSHITA ◽  
Ken ARAKI
Keyword(s):  
Copper Plating ◽  
Electroless Copper Plating ◽  
Plating Bath ◽  
Indirect Determination ◽  
Electroless Copper

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

EDTA Titration of Calcium and Magnesium: Determination of Calcium in Canned Vegetables

1968 ◽  
Vol 51 (4) ◽  
pp. 796-799
Author(s):  
Edward F Steagall
Keyword(s):  
Edta Titration ◽  
Vegetable Products ◽  
Canned Vegetables ◽  
Calcium And Magnesium ◽  
Standard Deviations ◽  
Lima Beans

Abstract The method adopted as official, final action last year was studied collaboratively again this year for calcium in canned vegetable products other than canned whole tomatoes. Twenty-six cans each of whole potatoes with calcium declared on the label and sliced potatoes and lima beans without a label declaration for calcium were analyzed by 13 analysts in 12 laboratories. Again the results were easily reproducible, and the agreement between laboratories was good. Because the method gives continuing precision and low standard deviations, it is recommended for adoption as official, final action for pharmaceutical and vitamin-mineral preparations and canned whole tomatoes, and as official, first action for canned potatoes and lima beans.

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