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Clear Alodine - Loss tangent and dielectric constant?

Clear Alodine - Loss tangent and dielectric constant?

Clear Alodine - Loss tangent and dielectric constant?

(OP)
Does anyone happen to have the loss tangent and dielectric constant for Clear Anodize?

Thanks!

RE: Clear Alodine - Loss tangent and dielectric constant?

Clear Alodine.  Perhaps Alodine 1500 per MIL-C-5541C, Class 3?

I'm not sure that reliable data exist for the loss tangent and dielectric constant.  The only electrical property  usually measured is the contact resistance for MIL-C-5541C, Class 3 coatings.  The maximum contact resistances allowed are:
5000 micro-ohm/sq. in. (after 24 hrs cure at 70-90oF, and
10 000 micro-ohm/sq. in. (as above, plus 168 hrs salt spray per ASTM B117).
See thread332-136478 for more info.
You can maybe figure out a dielectric constant from the resistance, measurement paraameters & coating thickness (extremely thin, I'll have to look it up).
Ken

RE: Clear Alodine - Loss tangent and dielectric constant?

RayBlaze,

Alodine is a very thin metal pretreatment based either on chromate or new titanium-bearing compounds.  In general, Alodine has "medium" resistivity.

Anodizing is a process that creates an oxide layer from the base metal.  It can be thin (but still much thicker than Alodine) or thick.  In general, it has high resistivity.

Regards,

Cory

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RE: Clear Alodine - Loss tangent and dielectric constant?

I didn't see your other post - you obviously copied the message and didn't change Anodize to Alodine.  

I don't have specific data for you.

Since the samples are easily obtainable, and since the testing is simple, why not generate the data yourself?

Regards,

Cory

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