摘要:
The present invention relates to a coat or coating to counteract crystalline deposits, said coat or coating being on a substrate and comprising a matrix composed of a binder system and ceramic particles and also boron nitride in particulate form, the boron nitride particles being embedded and essentially uniformly dispersed in the matrix; to a composition for producing such a coat or coating; to a process for producing such a coat or coating; to the use of a boron nitride composition as a material for coating surfaces coming into contact with salt-containing solutions; and also to a water treatment plant comprising components coming into contact with salt-containing water and provided at least partially with a coat comprising boron nitride.
摘要:
The invention relates to the use of a composition comprising a nanoscale powder, a porous ceramic powder, and a solvent to protect a metallic surface against chemical attacks at high temperatures, in particular in reducing and/or carburizing atmosphere, and to a corresponding method. The invention further relates to a system part that comprises a metallic surface that is exposed to a reducing and/or carburizing atmosphere in the operating state, wherein the surface is coated with a porous protective coating that has a specific surface area of at least 20 m 2 /g.
摘要:
The present invention relates to a coat or coating to counteract crystalline deposits, said coat or coating being on a substrate and comprising a matrix composed of a binder system and ceramic particles and also boron nitride in particulate form, the boron nitride particles being embedded and essentially uniformly dispersed in the matrix; to a composition for producing such a coat or coating; to a process for producing such a coat or coating; to the use of a boron nitride composition as a material for coating surfaces coming into contact with salt-containing solutions; and also to a water treatment plant comprising components coming into contact with salt-containing water and provided at least partially with a coat comprising boron nitride.
摘要:
The invention describes a method for recovering process or drinking water from water containing radioactive nuclides, more particularly from radium-containing ground water, comprising a chemical pre-treatment of the radioactive nuclide-containing water, and filtration of the chemically pre-treated water. As part of the chemical pre-treatment, manganese dioxide is added to the water and/or manganese dioxide is produced in the water in-situ. The chemically pre-treated water is filtered by means of at least one ceramic filter membrane. A station for removing radioactive nuclides from water is also described.
摘要:
The invention relates to a method for producing a highly-porous, ceramic layer and for applying said layer on metallic, ceramic, enamelled and/or glass substrates, by using porous, ceramic particles, preferably aluminium oxide, titanium oxide and zirconium oxide, as well as an inorganic binder system. Said inorganic binder system contains at least one ceramic nanoparticle having a particle size below 100 nm, preferably below 50 nm and ideally below 25 nm, water being used as a solvent. Layers so produced are suitable for self-cleaning catalytically-active layers, for example, in baking ovens, internal combustion engines etc. and, generally, for the coating of substrates, in order to drastically increase the specific surface thereof, for example for catalyst supports.
摘要:
The invention relates to a ceramic filter element (10), for water purification, whereby the element is embodied as a tubular body, with at least one wall (11) and at least one through opening (12), running the total length of the tubular body. The wall (11) is embodied as a functional layer, or as a support with a functional coating and the water for filtration either flows by pressurising the outer surface (18), thus flowing into the through opening (12), or the water for filtration flows by pressurising the inner surface (17) of the through opening (12), thus flowing to the outer surface (18) of the ceramic filter element (10). One end of the through opening (12) is sealed by means of a sealing screw (23), arranged within the housing (20).