According to paper in the Modern Electroplating book a typical Sulfamate
bath has 500psi stress while Watts bath has 18,000psi stress. Increasing
chloride concentration of Sulfamate bath increase stress to 1500psi. Is this
number too high to be low stress. Is there a range?
Regards,
Sofu
-----Original Message-----
From: Barmuta, Mike [mailto:[log in to unmask]]
Sent: Tuesday, February 11, 2003 9:13 AM
To: [log in to unmask]
Subject: Re: [TN] electroless vs. low stress NI
Bret: One word of caution. Simply calling out electrolytic Ni does not
assure you of low stress nickel. All electrolytic Ni is not stress free.
Typically a low stress Ni electroplate is produced with a sulfamate Ni bath
and low brightners/organics. Make sure you call it out correctly
Regards
Michael Barmuta
Staff Engineer
Fluke Corp.
Everett WA
425-446-6076
-----Original Message-----
From: Adair, Bret [mailto:[log in to unmask]]
Sent: Monday, February 10, 2003 3:29 PM
To: [log in to unmask]
Subject: Re: [TN] electroless vs. low stress NI
I guess the differentiation between the two should have been electrolytic or
electroless Ni. Thanks for the help.
Bret
-----Original Message-----
From: Crepeau, Phil [mailto:[log in to unmask]]
Sent: Monday, February 10, 2003 3:52 PM
To: [log in to unmask]
Subject: Re: [TN] electroless vs. low stress NI
hi,
for one, low stress nickel plating is associated with electro-deposited
nickel. the bath and plating process are formulated to electrodeposit
nickel with low stresses (no duh, huh?). for all i know, electroless nickel
deposits may have low stress also due to the fact that there ain't much
there, but it isn't referred to as 'low stress' nickel.
phil
-----Original Message-----
From: Adair, Bret [mailto:[log in to unmask]]
Sent: Monday, February 10, 2003 9:29 AM
To: [log in to unmask]
Subject: [TN] electroless vs. low stress NI
We have some prints here which call out low stress nickel followed by gold
and some call out electroless nickel followed by gold. What is the
difference between electroless and low stress nickel?
Bret
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