| 配方类型： |
METALS AND THEIR TREATMENT |
| 配方说明： |
Electroforming Baths for Copper |
| 配方组成： |
Copper fluoborate/-
Mechanical Propertie
used.
Copper sulfate/-
Copper fluoborate/-
Copper pyrophosphate/10-15 oz/gal
Sulfuric acid/-
Fluoboric acid/-
Tetrapotassium pyrophosphate/30-50 oz/gal.
Cathode efficiency/99-100%
Ammonium hydroxide/0.6 fl. oz
Temperature, 'F/130-140
Voltage/4-7 volts
Current density, amp/ft^2/10-80
Ratio: anode/cathode/1:1
Agitation/Air preferred; cathode rocking at lower current densities.
Cathode efficiency/100%
Ratio: anode/cathode/-
Anodes/Various types; OFHC copper preferred
Filtration/Continuous preferred for heavy deposits;
periodic filtration must be minimum requirement. Activated carbon is
recommended
Baume at 80'F/-
pH/8.1-8.6
Anodes/Rolled, cast phosphorized or OFHC copper
Hardness/150-200 DPH
Tensile strength, psi/50,000-65,000
Elongation (2")%/8-12
Leveling/50% (0.001" deposit)
Stress/ 10,000 (compressive) at 40 amp/ft^2 up to 0 |
|
