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2. Anti-scratch coating - Wikipedia

   en.wikipedia.org/wiki/Anti-scratch_coating

   Anti-scratch coating is a type of protective coating or film applied to an object's surface for mitigation against scratches. Scratches are small surface-level cuts left on a surface following interaction with a sharper object. Anti-scratch coatings provide scratch resistances by containing tiny microscopic materials with scratch-resistant ...

3. Transparent ceramics - Wikipedia

   en.wikipedia.org/wiki/Transparent_ceramics

   The AlON based transparent armor has been tested to stop multi-hit threats including of 30calAPM2 rounds and 50calAPM2 rounds successfully. The high hardness of AlON provides a scratch resistance which exceeds even the most durable coatings for glass scanner windows, such as those used in supermarkets.

4. Conservation and restoration of ceramic objects - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   The danger of mechanical cleaning is the potential for the surface to break or become scratched with a tool. Dusting is used when dirt is not strongly adhered to the surface of the ceramic and is carried out by either a brush or a soft cloth. Large ceramic vessels are cleaned with a delicate vacuum cleaner with a soft, muslin-covered head ...

5. Surface imperfections (optics) - Wikipedia

   en.wikipedia.org/wiki/Surface_imperfections_(optics)

   The scratches on a 10-5 or 20-10 surface can be hard to see, making the visibility standard more subjective. [1] Other standards may work better when precision surfaces are required. Optical coating can change scratch visibility, so for example an element that passes 40-20 before coating can be worse than 60-40 after coating. [1]

6. Paint protection film - Wikipedia

   en.wikipedia.org/wiki/Paint_protection_film

   Paint protection film being applied. Paint protection film (PPF, also called clear bra, clear film or clear paint film) is a thermoplastic urethane often self-healing film applied to painted surfaces of a new or used car in order to protect the paint from stone chips, bug splatters, and minor abrasions.

7. Coating - Wikipedia

   en.wikipedia.org/wiki/Coating

   A coating is a covering that is applied to the surface of an object, or substrate. [1] The purpose of applying the coating may be decorative, functional, or both. [2]