Loading patent…
AssigneeFerro Corporation
InventorsMartin Baumann, Klaus-Dieter Fritsche, Dagmar Korbelarz, Stephan Ludwig, Lutz Poth
Estimating the term…
The invention relates to glass, ceramic and metal substrates with at least one self-cleaning surface, comprising a layer with a micro-rough surface structure which is arranged on the substrate and made at least partly hydrophobic. The layer contains a glass flux and structure-forming particles with a mean particle diameter within the 0.1 to 50 μm range; the glass flux and structure-forming particles are present in a volume ratio within the 0.1 to 5 range, and the micro-rough surface structure has a ratio of mean profile height to mean distance between adjacent profile tips within the 0.3 to 10 range. To produce the subject of the invention the substrate is coated with a composition containing a glass flux and structure-forming particles, and the layer is burnt in and made hydrophobic.
A glass, ceramic or metal substrate with at least one self-cleaning surface comprising a layer with a micro-rough surface structure which is arranged on the substrate and made at least partly hydrophobic, characterised in that the layer contains a glass flux and structure-forming particles with a mean particle diameter within the 0.1 to 50 μm range, the glass flux and structure-forming particles are present in a volume ratio within the 0.1 to 5 range, and the micro-rough surface structure has a ratio of mean profile height to mean distance between adjacent profile tips within the 0.3 to 10 range.
A glass, ceramic or metal substrate with at least one self-cleaning surface comprising a layer with a micro-rough surface structure which is arranged on the substrate and made at least partly hydrophobic, wherein the layer contains a glass flux and structure-forming particles having a bimodal size distribution, wherein a first portion of structure-forming particles has a mean diameter from 0.2 to 3 μm and a second portion of structure-forming particles has a mean diameter from 3 to 15 μm, the glass flux and structure-forming particles are present in a volume ratio within the 0.1 to 5 range, and the micro-rough surface structure has a ratio of mean profile height to mean distance between adjacent profile tips within the 0.3 to 10 range.
A glass, ceramic or metal substrate with at least one self-cleaning surface comprising a layer with a micro-rough surface structure which is arranged on the substrate and made at least partly hydrophobic, wherein the layer contains a glass flux and structure-forming particles having a bimodal size distribution, wherein a first portion of structure-forming particles have a mean diameter from 0.2 to 3 μm and a second portion of structure-forming particles have a mean diameter from 5 to 10 μm, the glass flux and structure-forming particles are present in a volume ratio within the 0.2 to 2 range, and the micro-rough surface structure has a ratio of mean profile height to mean distance between adjacent profile tips within the 0.3 to 10 range.
Dependencies are inferred from the claim text.