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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Plating cobalt on titanium

I am currently trying to plate cobalt onto titanium from a sulphamate bath in order to carry out magnetic studies. I have been able to plate good quality deposits on a gold substrate but so far any deposits on titanium have been poor quality,(patchy and rough). Any advice would be appreciated. Do I need some pre-treat titanium before plating, for example?

Shem Weekes
Physics - Exeter, Devon, UK
2004

Titanium is such a very active metal that it is exceptionally difficult to plate onto. ASM's Metals Handbook Volume 5 "Surface Engineering" includes some pretreatments you can try, although reports are that even these are marginal. But if the substrate doesn't HAVE to be titanium for your experiment, you'll find brass, copper, zinc, or aluminum much more satisfactory.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2003

I TRIED SILVER AND NICKEL SULFAMATE ON TI ALLOY AFTER SULFURIC ACID ANODIZING AND IT WAS OK

Khair Shishani
aircraft maintenance - Al Ain, UAE
2004

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