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9th Feb 2021, 6:06 pm | #21 |
Nonode
Join Date: May 2016
Location: Cornwall, UK.
Posts: 2,317
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Re: Ultrasonic cleaning solution for variable capacitors
Momentary cleaning is fine, but I wouldn't want to leave a vinegar solution in a stainless steel (or any metal) container for long periods of time. My ultrasonic sits there with solution in it all the time, and I fear if that were an acidic one then the steel would be damaged, especially coupled with the periodic heating and ultrasonic agitation.
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10th Feb 2021, 12:13 pm | #22 | |
Hexode
Join Date: Jun 2018
Location: Buckinghamshire, UK.
Posts: 383
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Re: Ultrasonic cleaning solution for variable capacitors
Apparently even mild acidity can be damaging in combination with other factors...
https://iultrasonic.com/blog/ultraso...dic-solutions/ Quote:
Cheers |
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10th Feb 2021, 2:06 pm | #23 | ||
Dekatron
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 4,924
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Re: Ultrasonic cleaning solution for variable capacitors
Quote:
B
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10th Feb 2021, 3:06 pm | #24 |
Hexode
Join Date: Jun 2018
Location: Buckinghamshire, UK.
Posts: 383
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Re: Ultrasonic cleaning solution for variable capacitors
I wouldn't have thought pitting corrosion would be a significant problem when using washing up liquid, providing the pH remains above 7 ? (i.e. Whatever contamination is being washed off isn't creating an acidic condition.)
Cheers |
10th Feb 2021, 3:54 pm | #25 |
Dekatron
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 4,924
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Re: Ultrasonic cleaning solution for variable capacitors
I'd simply prefer not to have chloride in the bath or on the component being cleaned. I note your earlier posts refers to crevice corrosion being caused by chloride. Although the bulk liquid may have a pH>7, what the local pH is inside a pit or a crevice is unknowable.
Of course, we've had references to washing up liquid, vinegar and citric acid and Coke being used so there's scope for all sorts of interactions. I recall the use of "Harpic" being discussed some time ago. B
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