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GeneralRe: Tantalum! Pin
glennPattonWork30-Oct-19 4:38
professionalglennPattonWork30-Oct-19 4:38 
GeneralRe: Tantalum! Pin
CodeWraith30-Oct-19 4:48
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GeneralRe: Tantalum! Pin
glennPattonWork30-Oct-19 5:53
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GeneralRe: Tantalum! Pin
CodeWraith30-Oct-19 6:00
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GeneralRe: Tantalum! Pin
CPallini30-Oct-19 5:25
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GeneralRe: Tantalum! Pin
CodeWraith30-Oct-19 5:33
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GeneralRe: Tantalum! Pin
Rick York30-Oct-19 6:47
mveRick York30-Oct-19 6:47 
GeneralRe: Tantalum! Pin
Rick York30-Oct-19 7:00
mveRick York30-Oct-19 7:00 
Every time I come across a mention of tantalum I think about some projects I did a few jobs ago involving chemical processing. We were making systems called "wetbenches" and this one particular variety of them was used to strip the oxide from the monitor wafers used in a deposition furnace. The wafers had to be cleaned with phosphoric acid that was VERY hot : around 150C. The only material we found that could stand up to that was tantalum so that's what the tanks were made from. I think they held on the order of ten gallons or so. Tantalum is very, very dense and that tank was really heavy. It took four guys to lift it into place. One curious thing - water and phosphoric acid is an exothermic reaction so when we wanted the acid bath to be hotter we would add cold water to it. That defies most logic but because it is an exothermic reaction it actually did raise the temperature.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"

GeneralRe: Tantalum! Pin
Ron Anders30-Oct-19 7:19
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GeneralPuzzle Me This Pin
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Ron Anders30-Oct-19 3:17
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GeneralWSO CCC OTD 2019-10-30 Pin
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GeneralRe: WSO CCC OTD 2019-10-30 Pin
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GeneralRe: WSO CCC OTD 2019-10-30 - we have a Winner! Pin
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GeneralRe: WSO CCC OTD 2019-10-30 - we have a Winner! Pin
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