3 Responses to “Calculate the current density.”

1. admin says:

   July 28 at 7:37 am

   On Mar 14, 2:10 am, "Hafel" <AnGhf…@gmail.com> wrote:
   

   > Hi, i met a problem to calculate the current density in the
   > electroplating. As i know , to calculate the current density, we muz
   > know what is the current and the electrode surface area that immersed
   > in the electrolyte.

   Current density refers to the electrode, not to the whole system. For
   electroplating, it would refer to the object being plated (working
   electrode).

   The counterelectrode, as a rule, should be larger in any case, the
   better to know or control the plating potential at the working
   electrode.

   Dangerous Bill
2. admin says:

   July 28 at 7:37 am

   On Wed, 14 Mar 2007 10:10:00 +0100, Hafel <AnGhf…@gmail.com> wrote:
   > Hi, i met a problem to calculate the current density in the
   > electroplating. As i know , to calculate the current density, we muz
   > know what is the current and the electrode surface area that immersed
   > in the electrolyte. My question is that the electrode used to
   > calculate the surface area is cathode or anode, or the average of
   > both? and lets say the surface area of cathode to be plated is used to
   > calculate, then what if the cathode is more than one. What i mean is i
   > have to use the average of the srface area of the cathodes or the
   > total of all cathode surface area??

   Total surface at which the deposition is going on. This means sum of  
   surfaces of all cathodes present.

   Borek
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3. admin says:

   July 28 at 7:37 am

   > Total surface at which the deposition is going on. This means sum of
   > surfaces of all cathodes present.

   Thanks. This is what i want to know.