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The oxide coatings are in fact corrosion products which are thin, usually less than 2.5 µm (.00001 in) oxide with good adhesion.
The advantages of conversion coating
- No dimensional changes:
- The finish will not chip, peel, flake, or rub off:
- Reduces light glare (reflection)
- Improved lubrication characteristics:
It make excellent finished surface for moving parts such as hand tools and machine parts
blackening chemicals
bluing chemicals
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