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Technical Discussions

Dr.M.T.Shyamsunder

07:19 Jan-18-2000
Measurement of coating thickness

I am looking for methods to measure the coating thickness of
aluminide (NiAl) on Inconel 718. I need to measure the coating thickness of Aluminide in the range of 50 to 100 microns with an accuracy of + / - 10 microns. ANy ideas and past experience will be helpful.

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RON PRESTON

03:08 Feb-10-2000
Re: Measurement of coating thickness : TRY USING EDDY CURRENT INSPECTION. THE METHOD IS MADE FOR THIS PURPOSE.

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Vina

07:15 Dec-29-2000
Re: Measurement of coating thickness : : TRY USING EDDY CURRENT INSPECTION. THE METHOD IS MADE FOR THIS PURPOSE.

I have almost the same problem, I'm doing thickness measurement of NiAl on Inconel 600 for my final year project. I've tried eddy current, it doesn't help much. The signal was too weak.
But still, maybe anybody can specify more on that, I mean what are the machine capabilities, sample requirement, etc. Thank you

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