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cleaning [2013/11/17 07:15] – mcmaster | cleaning [2013/11/17 07:18] (current) – mcmaster | ||
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Shame on you if you picked up a die with your bare hands but things do happen. | Shame on you if you picked up a die with your bare hands but things do happen. | ||
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===== Polymide passivation ===== | ===== Polymide passivation ===== | ||
- | Can be removed with strong acids (eg RFNA). | + | General reccomendations: |
- | + | * Oxygen plasma is probably best if you have access to it | |
+ | * If you can deal with safety issues, ethylendiamine may be next best | ||
+ | * Fuming nitric aicd works but takes a while. This can potentially cause chip damage but shouldn' | ||
+ | * Piranha eats it quickly but it eats other metals nearly as quickly so its probably best avoided | ||