Ask the Experts
Electroless Nickel Problem Solving and Related Applications
| Answer Archive
| Ask a question
Q: We are coating 6061 parts with two coatings: one is electroless nickel with tin plating on top.
After plating, we have noticed that some areas have a coarse texture relative to areas with a smooth surface.
What could be the reason for that?
If the roughness is occurring after the tin plating, but not after the electroless nickel plating, I would be focusing my concentration on the tin bath itself. First, make sure the tin bath you are using is within spec and not contaminated. Second, check your rectifier to make sure it is operating properly.
Date asked: 11 November 2013
Q: I have a question about mid-phosphate electroless nickel: How many hours (salt spray test) are required to pass with 15 micron thickness? We are plating over aluminum 6061, and we require 48 hrs of salt spray test to pass. Note: Any white spots on the component will be rejected after salt spray test.
The standard for most mid-phos electroless nickel is 100hr salt spray protection with 1mil of thickness. Over 6061 aluminum, you should not see any white spots after testing. Note: not all electroless nickel's are created equal. Please contact me if you need information on a product that is guaranteed pass your 48 hour test (standard for the aerospace connector industry).
Date asked: 05 September 2013
Back to the list of experts