rustpreventionandremoval:rust_prevention_and_removal
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rustpreventionandremoval:rust_prevention_and_removal [2014/01/09 06:14] – [How did it happen] eidis | rustpreventionandremoval:rust_prevention_and_removal [2019/08/27 20:45] (current) – external edit 127.0.0.1 | ||
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===== How did it happen ===== | ===== How did it happen ===== | ||
- | First of all the good news. | + | Warm air can hold more moisture than cold air. That is why humidity is much lower during winter (~30% - ~45%) and peaks during hot summer days (~45% - ~80%). Condensation occurs when air cools down and releases moisture, usually at night. Moisture tends to attach to the most coldest surfaces which are nearby. Unfortunately for us, it is metal. |
- | * PCB's and their chips are very resistant to corrosion. | + | * First of all the good news. PCB's and their chips are very resistant to corrosion. |
- | * Most of the times rust attacks steel and aluminum metal shieldings as well as various connectors which were directly or indirectly exposed to moisture. | + | * Most of the times rust attacks steel and aluminum metal shieldings as well as various connectors which were directly or indirectly exposed to dirt and moisture. |
- | * Rust does not form if ambient relative humidity is below 40%. The perfect level for storing | + | * Rust does not form if ambient relative humidity is below 40%. |
+ | * Recommended ambient relative humidity | ||
+ | * You can monitor it with hygrometer which is a must have and can be cheaply purchased on eBay. | ||
* Don't go lower than 30% because that can lead to electrostatic build up. | * Don't go lower than 30% because that can lead to electrostatic build up. | ||
- | * Recommended ambient relative humidity for semiconductors is 30 - 50% | ||
- | |||
- | Warm air can hold more moisture than cold air. That is why humidity is much lower during winter (~30% - ~45%) and peaks during hot summer days (~45% - ~80%). Condensation occurs when air cools down and releases moisture, usually at night. Moisture tends to attach to the most coldest surfaces which are nearby. Unfortunately for us, it is metal. | ||
===== Early symptoms ===== | ===== Early symptoms ===== | ||
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===== Nail varnish ===== | ===== Nail varnish ===== | ||
- | Use it to cover exposed copper if solder mask gets damaged and to seal off areas which had lots of rust to seal off air and prevent oxidation. | + | Use it to cover exposed copper if solder mask gets damaged and to seal off areas which had lots of rust. This will prevent oxidation. |
===== Baking soda ===== | ===== Baking soda ===== | ||
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|{{: | |{{: | ||
- | | Sanding | + | | Sanding |
* 80 grit | * 80 grit | ||
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|{{: | |{{: | ||
- | | Rubber | + | | Rubber |
|Black | |Black | ||
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Work in progress. | Work in progress. | ||
- | ====== | + | ====== |
Work in progress. | Work in progress. | ||
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Keep the scene alive ! | Keep the scene alive ! | ||
+ | |||
Eidis | Eidis | ||
rustpreventionandremoval/rust_prevention_and_removal.1389212047.txt.gz · Last modified: 2019/08/27 20:44 (external edit)