Summary for electroless ni-b composition Discussion
Electroless Ni-B composition is the focus of this thread, with Vladimir Igoshev asking what percentage-wise makeup a “regular” Ni-B electroless plating typically has. Ron Duncan replies that the answer depends on the bath chemistry and warns that “regular” is a vague term. He gives approximate ranges: about 3-8% boron for borohydride baths and about 0.2-4% boron for DMAB baths, with the balance being nickel. Ron also advises Vladimir to specify the application or bath situation, since the term can be misleading and the exact composition varies by process.
Hi everybody,
Could you please give me an idea on what the composition
(percentage wise) of a “regular” Ni-B electroless plating is.
Thanks a lot in advance,
Vladimir Igoshev
Senior Materials Researcher – Waterloo, ON, Canada
2004
Probably about 3-8 percent boron for borohydride baths, .2 to 4 percent boron for DMAB–balance nickel, Vladimir. But “regular” can be a dangerous word: if you ask for “a regular coffee” in New Jersey, you are telling the server that you want milk and 2 teaspoons of sugar in it 🙂
Please tell us your situation. Thanks!
Ted Mooney, P.E.
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2003
OK. Here is what I’m “hunting” for. Ni-B plating on a solderable surface. So it’s Au over Ni-B over Cu.
Thanks,
Vladimir Igoshev
– Canada
2004
A. For solderability, you want a DMAB reduced coating containing 0.2 to 0.5 percent boron. There are several that are commercially available from the metal finishing suppliers.
Ron Duncan [deceased]
– LaVergne, Tennessee
It is our sad duty to note Ron’s passing on Dec. 15, 2006. A brief obituary opens
Episode 13 of our Podcast.