In some embodiments, modifying the dielectric region includes modifying a wetting angle of the dielectric region.
Hence, the wetting angle of the coating is increased and an attack by substances contained in the lubricant is effectively prevented.
The contact angle (wetting angle) is a measure of the wettability of a solid by a liquid.
Preferably, this wetting angle is less than 20° and the casting surface has an Arithmetic Mean Roughness Value (Ra) of less than 10 microns.
The molten steel produces extremely good wetting of the casting surface of the roll, resulting in a wetting angle of the molten steel on the casting surface of less than 40°.
Contact Angle is a measure of the wettability of a solid by a liquid.
The substrate with a reduced light-scattering, ultraphobic surface has a total scatter loss ≤ 7 %, preferably ≤ 3 % and especially ≤ 1 % and a contact angle in relation to water of ≥ 140°, preferably ≥ 150°.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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