I would agree. Every time I have looked at open air plasma, it appears
that it works well for flat substrates, like bare boards, but not for full
assemblies with any kind of topography.
Out of curiosity, when you vacuum plasma, what gas are you using? We
generally use argon so as not to blacken silver parts.
*Douglas Pauls *| Principal Materials and Process Engr | Advanced
Operations Engineering
*COLLINS AEROSPACE*
400 Collins Road NE, MS 108-101, Cedar Rapids, IA 52498 USA
*Tel:* +1 319 295 2109 | *Mobile: *+1 319 431 3773
[log in to unmask]
On Wed, Mar 6, 2019 at 1:50 PM lduso - Diamond-MT.com <[log in to unmask]>
wrote:
> Not as a standard procedure on CCAs but a couple here and there. It came
> about due to poor surface energy tests and it does help. Quite often on
> metallic parts like stainless steel and nickel before parylene coating. All
> done in a vacuum. Although I would love to try open-air plasma.
>
> Lloyd Duso
> General Manager
> Diamond-MT
> (814) 535-3505
> www.Diamond-mt.com
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.Diamond-2Dmt.com&d=DwMFaQ&c=ilBQI1lupc9Y65XwNblLtw&r=lTRDjB8ojaf7ZaJ9DHeDAm7e-HFP9fxIkv6fRnV49HE&m=w13JU2W1V8UO5sePYWQBU04jy9DhgL4qXpKHfLaXFpA&s=xlQdpAXqDTjxXvzI2GcrjVv6--XbIxDd8PTkCsO-6WE&e=>
>
>
> On Wed, Mar 6, 2019 at 2:42 PM Douglas Pauls <
> [log in to unmask]> wrote:
>
>> Good morning all,
>> Are any of you routinely treating assembly surfaces with plasma prior to
>> conformal coating? We do not, except for very niche applications, but I
>> wanted to see if that was a mainstream process for anyone else.
>>
>> *Douglas Pauls *| Principal Materials and Process Engr | Advanced
>> Operations Engineering
>>
>> *COLLINS AEROSPACE*
>>
>> 400 Collins Road NE, MS 108-101, Cedar Rapids, IA 52498 USA
>>
>> *Tel:* +1 319 295 2109 | *Mobile: *+1 319 431 3773
>>
>> [log in to unmask]
>>
>
|
