 
| Received: |
by ipc.org (Smail3.1.28.1 #2)
id m0uWsrB-0000CdC; Thu, 20 Jun 96 18:09 CDT |
| Old-Return-Path: |
|
| Date: |
Thu, 20 Jun 1996 19:17:49 -0400 |
| Precedence: |
list |
| Resent-From: |
|
| Message-ID: |
|
| X-Status: |
|
| Status: |
O |
| X-Mailing-List: |
|
| TO: |
|
| Return-Path: |
<TechNet-request> |
| From [log in to unmask] Fri Jun 21 09: |
00:19 1996 |
| Resent-Message-ID: |
<"Z-2J-.0.-37.ueTon"@ipc> |
| Subject: |
|
| From: |
|
| X-Loop: |
|
| Resent-Sender: |
|
| Parts/Attachments: |
|
|
the tin process after a while breaks down - the grain refiner - and stannous
turns into stannic - also current density decreases due to stannic tin and
breakdown of additive - deposit is not as pure and sufficient time is
required to plate sae thickness as originally.
Atotech does have what they call a clarifier - it willpercipitate all the
stannic out - run a carbon on the bath - and ur off to the races once more.
need more info e-mail me at [log in to unmask]
|
|
|
