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H2O2 catalyst packs...
I noticed the bail type catalyst packs that the Armadillo team are
using. Apparently the coatings just blow right off. Electroplating might be the answer but does anyone know if vibration in the pack from highspeed flow will just crack an electroplated coating off? Would something like catalyst coated inconel bearings work better? You could constrain them in a rigid manner and there would be practically no flex, plus its inconnel so expansion would be minimal. -Rich Nienhuis |
#2
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H2O2 catalyst packs...
Richard Nienhuis wrote:
I noticed the bail type catalyst packs that the Armadillo team are using. Apparently the coatings just blow right off. Electroplating might be the answer but does anyone know if vibration in the pack from highspeed flow will just crack an electroplated coating off? Would There are so many ways of electroplating, and so many surface preparations that it's not possible to answer it. Electroplating seems like an art, until you've spent many years learning the science. -- http://inquisitor.i.am/ | | Ian Stirling. ---------------------------+-------------------------+-------------------------- "An enemy will usually have three courses open to him. Of these he will select the fourth." -- Helmuth von Moltke |
#3
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H2O2 catalyst packs...
"Richard Nienhuis" wrote in message
om... I noticed the bail type catalyst packs that the Armadillo team are using. Apparently the coatings just blow right off. Electroplating might be the answer but does anyone know if vibration in the pack from highspeed flow will just crack an electroplated coating off? Would something like catalyst coated inconel bearings work better? You could constrain them in a rigid manner and there would be practically no flex, plus its inconnel so expansion would be minimal. /lurk It's a good idea. I know that coated beads of different materials are used in ion exchange columns for industry and would think that this might work here. Maybe several layers of electro-deposited metal beads tightly packed between the stainless spacers they are using..? Certainly high-speed flow should not remove the coating from the tiny beads/balls since there are no sharp surface edges. You would need to have fairly thin layers to ensure that flow wasn't restricted too much and would need to trial different sized beads to get the desired reaction rate - but if it works with water it should work for them too, IMO. Cameron:-) lurk |
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