Thermo chemical cleaning .
Thermo chemical cleaning .
(OP)
We are tyring to clean surface oxides from nickel nased superalloys using thermochemical cleaning ovens using cf4.
We are struggling to remove fully the oxide films using a 1000c fro 1 hour cycle . Any ideas?
We are struggling to remove fully the oxide films using a 1000c fro 1 hour cycle . Any ideas?





RE: Thermo chemical cleaning .
RE: Thermo chemical cleaning .
RE: Thermo chemical cleaning .
RE: Thermo chemical cleaning .
no water just hydrogen and cf4 and argon purge,
the parts are coming off wing and the cracked aerofoils are littered with okide clusters on the surface of the cracks
RE: Thermo chemical cleaning .
RE: Thermo chemical cleaning .
RE: Thermo chemical cleaning .
The best cleaning practices are probably abrasive, followed by chemical. The abrasive loosens/detaches/erodes a high % of the contaminates; then the agressive [highly dangerous acids] can be used. But this would be my best guess.
This materials cleaning problem is best suited for the materials "other" forum... Suggest posting your question there: http://www.eng-tips.com/threadminder.cfm?pid=367
Regards, Wil Taylor
Trust - But Verify!
We believe to be true what we prefer to be true.
For those who believe, no proof is required; for those who cannot believe, no proof is possible.
Unfortunately, in science what You 'believe' is irrelevant – "Orion"