Where the
world gathers for metal finishing
Q&As since 1989


-----

Electroless Ni-B

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
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.