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Letter 39087
Detection of oil/grease on aluminum
surface
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1)Suggest me some methods to detect and quantify very,very small
amounts of oil/grease on aluminum tubes.
2)Suggest me some methods to detect and quantify the formations of
Aluminum oxide on aluminum tubes.
Steve Karun Vijayan
mechanical engineering student - Chennai, Tamilnadu, India
++++++
If the tubes are small, bake it at 125F and weigh a pyrex dish or
porcelain evaporation dish. Soak the tube with a suitable solvent.
Evaporate the solvent, bake the dish again and weigh. This requires a
very good analytical balance and does not discriminate between
anything that comes off of the tube. To identify the oil or grease,
it will take a good operator, a gas chromatograph and a great
chromatographic library.
I guess a scanning electron microscope might work, but I would expect
at least 50% variation in the results.
Now, tell us why you want to do this and the size of the parts.
James Watts
- Navarre, Florida
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