What are the optimal parameters I need to achieve a successfull Electrodeposition of Ca-P on WE43.
Parameters include: Pre-surface treatment,composition of Electrolytic solution, Post-surface treatment and the settings of the Power Unit for both pulse and non-pulse methods.
Hi Iniobong.
Kindly, see attached file that explains the important parameters for the coating methods as well pre-surface treatment with composition of electrolyte.
And see the following links:
https://www.science.gov/topicpages/e/electrodeposited+hydroxyapatite+coatings.html
https://www.science.gov/topicpages/h/hydroxyapatite+bioceramic+coatings.html
Regards,
The most important parameters for electrodeposition are
1. Check whether your substrate is conductive. Proper cleaning is mandatory for any thin film growth.
2. Go through the Pourbaix diagram of the materials to be deposited. The pH-potential window is essential to find. You can also perform an LSV experiment (cathodic scan) with the precursor electrolyte, and find the specific pH-potential window by looking at the reduction potential.
3. In some cases, specific additives are required. For that, find any suitable literature.
4. Maintain the temperature.
5. Choose the reference electrode properly. In highly basic condition, use Hg/HgO reference electrode. In high-temperature experiment (above 40 deg. C) don't use Calomel electrode, instead, Ag/AgCl is better.
Rest all are required to be discussed with your supervisor, I guess.
Hi Etim
Could you please give more details about your work; const. current or voltage or CV.
temp. used, thickness needed, application of this coating.......
Electrodeposition technique is very sensitive to many parameters.
If you do, believe me, you will find this when you begin to work.
Use high-quality chemical and control both pH and temp.
Good luck.
Gobara
The Power unit that is available for this electrodeposition is The KYD-III double pulse electroplating power supply (YSD Electronic and Mechanical Co. Ltd., Shenzhen). It has both the negative and postive pulse potential. I used 3volt constant potential and 60 degree temperature. Deposition time was 1 hour but I could not still get a reasonable deposition of CaP on the substrate. the electrolyte solution had a ph of 5 and my substrate is about 3mm in size.
Hi Etim
Could you please let me know how do you choose these conditions. (could you put the ref.). what is the anode, Pt or what?
The sample is very small, could you, first, increase the sample surface area.
One key of electrodeposition is purity of the raw materials. Also, the cleaning of the sample surface area.
Did you try to use applied current instead of constant voltage? Usually, people use constant current density.
Good luck
Gobara
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