3 results about "Gel method" patented technology

The invention provides a self-activation vanadate fluorescent powder, a preparation method, and applications thereof. The chemical formula of the self-activation vanadate fluorescent powder is A2BMg2V3O12, wherein the A represents Li, Na, or K, and the B represents Y, Gd, Bi, La, or Lu. The self-activation vanadate fluorescent powder is synthesized through a sol-gel method, and can be activated by ultraviolet lights with a wave length of 200 to 400 nm. The emission spectrum of the fluorescent powder covers a wide range of 350 to 700 nm, and the main peak is at 500 nm. The light emission of the self-activation vanadate fluorescent powder can be adjusted by doping rare earth ions such as Eu3+, Sm3+, Yb3+, Pr3+, Nd3+, and the like. The fluorescent powder can be applied to the fields of LED and solar cells.

The invention discloses a nickel-coated graphite reinforced wear-resistant antifriction corrosion-resistant ceramic coating material, a coating and a preparation method and application thereof, and belongs to the technical field of metal coatings. The nickel-coated graphite reinforced wear-resistant antifriction corrosion-resistant ceramic coating material comprises the following components: 2%-4% of nickel-coated graphite, 45%-60% of micron aluminum oxide, 2%-8% of micron zirconium oxide, 4%-6% of sodium molybdate, 1%-3% of a curing agent and 40%-45% of a binder. The invention further provides a bonding ceramic coating prepared from the ceramic coating material and a preparation method of the bonding ceramic coating. The nickel-coated graphite reinforced wear-resistant antifriction corrosion-resistant ceramic coating is prepared by adopting a sol-gel method, is simple in preparation process, has good wear-resistant, antifriction and corrosion-resistant properties, can be applied to various harsh corrosive environments and the surfaces of various impact-resistant and wear-resistant parts, and has a quite wide application value.

The invention discloses a preparation method of a zirconia ceramic ultrafiltration membrane. According to the preparation method, a sol-gel method and a micro-emulsion medium hydrothermal method are organically combined, sol formed by the sol-gel method is used as a precursor, then a zirconium oxide nano solution is prepared by the hydrothermal method at 120-150 DEG C through a micro-emulsion medium, a coating solution is directly prepared from the zirconium oxide nano solution, and the zirconium oxide ceramic ultrafiltration membrane is prepared. The defects and deficiencies of the existing method for preparing a ceramic ultrafiltration membrane can be overcome.