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Rochelle cyanide baths

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Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001242
EISBN: 978-1-62708-170-2
... of construction for equipment basic to copper plating Tank linings are of rubber or plastic (a) , or Koroseal. Plating bath Heating coils Filters Filter aids Dilute cyanide Low-carbon steel Teflon (b) Low-carbon or stainless steel; cast iron Diatomite Cellulose Rochelle cyanide Low-carbon...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003215
EISBN: 978-1-62708-199-3
... (as a strike) on a variety of substrates. These baths can be easily controlled to produce thin deposits of relatively uniform thicknesses on all surfaces. Dilute Cyanide and Rochelle Cyanide Baths Dilute cyanide and Rochelle cyanide baths are primarily used to deposit a strike coating of 1.0 to 3.0 μm...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003215
EISBN: 978-1-62708-199-3
... and uncontrolled growth. This results in further current density variations that can seriously affect the mechanical properties of the deposit. Dilute cyanide and Rochelle cyanide baths are primarily used to deposit a strike coating of 1.0 to 3.0 μm (0.05 to 0.1 mil) of copper prior to further copper...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006491
EISBN: 978-1-62708-207-5
... power of the copper electrolyte. The copper strike is achieved during the first 2 min while the current density of the electrolyte is maintained at 2.4 A/dm 2 (24 A/ft 2 ) to obtain a film thickness of approximately 7.5 μm ( Table 4 ). The copper strike bath should be a Rochelle-type copper cyanide...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001308
EISBN: 978-1-62708-170-2
... surface with, or dip a test panel into, an unheated chromate conversion coating bath of the acid type until an orange-colored film is formed. A uniform orange film indicates a chemically clean surface. Solvent Cleaning The primary function of solvent cleaners is to remove oil and grease compounds...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001255
EISBN: 978-1-62708-170-2
... or condition Amount Makeup Potassium cyanide, g/L (oz/gal) 64 (8.6) Copper cyanide, g/L (oz/gal) 29 (3.9) Potassium stannate, g/L (oz/gal) 35 (4.7) Potassium hydroxide, g/L (oz/gal) 10 (1.3) Rochelle salt, g/L (oz/gal) 4.5 (6.0) Analysis “Free cyanide,” g/L (oz/gal) 22 (2.9...
Book Chapter

By George B. Rynne
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001251
EISBN: 978-1-62708-170-2
... baths using the following cycle: Degrease with solvent (optional) Alkali clean (anodic) Rinse Dip in 5 to 25% hydrochloric acid Rinse thoroughly Dip in 30 to 75 g/L (4 to 10 oz/gal) sodium cyanide Rinse Copper cyanide strike Rinse thoroughly Dip in 10% fluoboric acid...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.9781627081702
EISBN: 978-1-62708-170-2
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001265
EISBN: 978-1-62708-170-2
... due to their tendency to dissolve any metallic surfaces encountered, either before or after discharge. Certain plating bath additives used in the past, including mercury and cyanide compounds, have been virtually eliminated from use due to waste water restrictions. Adjustment of waste water pH...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.9781627081993
EISBN: 978-1-62708-199-3
Book Chapter

Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003786
EISBN: 978-1-62708-177-1
... but not essential Uses General use for copper alloys Copper: electrolytic; cyanide bath Solution CuCN, 20 g/L NaCN, 30 g/L NaOH, 1.5–3 g/L Temperature 45–60 °C (115–140 °F) Voltage 4–6 V Current density 0.5–1 mA/cm 2 Agitation Mild stirring Anode Copper Anode bags Desirable...