Experiments on the electrodeposition of brass from cyanide solutions

Electrochemical and XRD studies of Cu–Zn coatings electrodeposited in solution with d-mannitol

“…In the case of the cyanide solution Zn(OH) 2 should not accumulate as reaction (3) is rate determining or reaction (2) does not proceed at all [23]. Thus the above mentioned mechanisms of Zn reduction can be the reason for incorporation of Zn(OH) 2 into Cu-Zn electrodeposited from cyanide-free solutions and formation of a pure Cu-Zn alloy in the cyanide solution.…”

“…When zinc is reduced from the zincate solution Zn(OH) 2 may accumulate at the cathode surface due to slow reaction (2). In the case of the cyanide solution Zn(OH) 2 should not accumulate as reaction (3) is rate determining or reaction (2) does not proceed at all [23].…”

“…Another important feature of the brass coating is its good adhesion to rubber and that is employed in a tyre industry. The electrodeposition of the excellent quality brass coating from a cyanide solution was established in the middle of the 20th century [1,2], and since then researchers have been looking for an environmentally friendly cyanide-free solution which could replace the former one without loss in the quality of coating [3][4][5][6][7][8][9]. Coatings from such solutions as pyrophosphate [3,4], pyrophosphate-oxalate [5] glucoheptonate [6,7], sorbitol [8] and glycerol-based [9] have been studied.…”

Structural and Corrosion Study of Uncoated and Zn-Cu Coated Magnesium-Based Alloy

“…Cyanide-based solutions-which are not desirable due to environmental issues-were used as deposition electrolyte for Zn-Cu coatings in industry [25,26]. To solve these issues, environmentally-friendly and cyanide-free media including non-aqueous (ionic liquids [27] and deep eutectic solvents [28]) and aqueous media (gluconate [29], EDTA [30,31], mannitol [32], tartrate [33], ammonia [34], and pyrophosphate-based complex solutions [35,36]) have been used for Zn-Cu deposition.…”