Summary for black nickel plating Discussion
Dark black plating for gold jewelry and stainless steel was the goal, but the questioner reported that Degussa black rhodium and black ruthenium solutions produced only dark gray despite extensive cleaning, polishing, ultrasonic washing, degreasing, rinsing, and steam washing. The discussion suggests the issue may be the coating system rather than the prep. Qutubuddin advised that black nickel is a better option than black chrome for jewelry, saying black chrome is more functional than decorative, often needs a chiller, and can create effluent-treatment problems. A second answer agreed and recommended anthracite nickel, describing it as giving a rich black to anthracite finish, being easier to maintain for jewelry, and allowing color adjustment with a single additive. Both answers steer the user away from black chrome for jewelry applications.
2003
Q. I want to know how I can achieve the dark black color plated on gold jewelry and stainless steel surfaces .. I already tried The Degussa plating solutions 474 .. 470 (for black rhodium plating solution [adv: black rhodium plating solution on
or
Amazon [affil link]
, and black ruthenium plating solution ) but unfortunately both of those solutions give a dark gray Result —NOT BLACK—- I tried to change the voltage and temperatures but it didn’t work .. I prepare the surface very well :
1- We make magnetic tumbling for the item to be plated
2- then we make the polishing with the traditional fabric polishing discs and waxes.
3- We do ultrasonic washing for the items.
4- We do electrolytic degreasing and neutralization.
5- Through Rinsing by ionized water.
6- Steam Washing.
7- Dipping, Plating of the item.
Even after all those steps, still the result is dark grey. Now I come to know that the problem is not with the procedure that I use to follow but with the materials and solutions that I used. Kindly advise me of what is the best way and products that can be used to get the dark black plating on gold jewelry and steel items. Remarks
: A friend of mine advised me to use black chrome plating, which is usually used to plate aluminium products, just I was wondering, is it advisable that I use black chrome plating for jewelry. Thanking You. Jihad Ali
Jihad Ali Abbas
jewellery – Dubai, United Arab Emirates
A. Dear Abbas,
Black nickel is better option then black chrome which has blackish appearance and secondly black chrome is more functional coating rather decorative and in most of the black chrome process you need a chiller also which is difficult to find in jewelry shop and then effluent treatment problem is also there . I think your friend needs some more classes in metal finishing.
Qutubuddin
– Ajman, UAE
2003
A. Well , I agree with Qutubuddin, the better option is either anthracite nickel- which gives a rich black to anthracite finish and with a single additive you can adjust the colour, also easy to maintain for jewelry, whereas efficiency of black chrome is less and difficult process, go to Ajman and meet the above guy maybe he will help you out.
Praveen Kumar
plating process supplier
Mumbai, India
2003
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A. Many people are allergic to nickel. It is not recommended for jewelry.
Julie Richardson
– Houston, Texas USA
November 1, 2016