3results about How to "Dense coating structure" patented technology

This invention discloses a superhydrophobic and oleophobic coating combined with a solvent-free anti-corrosion primer and its preparation method. The superhydrophobic and oleophobic coating includes a solvent-free anti-corrosion primer layer, an intermediate paint layer, and a topcoat layer. The solvent-free anti-corrosion primer layer includes epoxy resin, butyl glycidyl ether, pigments, fillers, and additives. The intermediate paint layer includes fluorocarbon resin, diluent, pigments, fillers, and additives. The topcoat layer includes fumed silica and ethanol. This invention, through the mutual compatibility and synergistic effect of the primer layer, intermediate paint layer, and superhydrophobic topcoat layer, enables the overall coating to not only exhibit excellent hydrophobic and oleophobic properties but also possess long-lasting anti-corrosion performance, extending the service life of the metal substrate. It also improves the hydrophobic and oleophobic stability of the superhydrophobic and oleophobic coating, showing promising application prospects.

The invention relates to the technical field of alloy coatings, in particular to an in-situ TiC reinforced AlCoCrFeNiMo high-entropy alloy laser cladding coating and a preparation method thereof.The preparation method comprises the steps that S1, mixed metal powder, Ti powder, graphite powder and modified powder are added into a ball milling tank and subjected to ball milling under argon protection; s2, the surface of the base material is polished with abrasive paper, an interface bonding modifier is sprayed after ultrasonic cleaning, and a pretreated base material is obtained; and S3, cladding a coating on the surface of the base material by using DML2000 laser cladding equipment, and cooling to room temperature along with the furnace after cladding is completed. According to the method, through the in-situ reaction of Ti and C in the laser cladding process, a TiC reinforced phase is generated in an AlCoCrFeNiMo high-entropy alloy matrix, the problems of uneven distribution, poor interface bonding and the like caused by direct addition of TiC are avoided, and the bonding strength of the reinforced phase and the matrix is improved. And due to introduction of TiC, crystal grains are refined, lattice distortion is increased, and therefore the comprehensive performance of the coating is improved.

The application relates to the technical field of wave-absorbing materials, and particularly discloses a metal element doped lithium ion compound wave-absorbing coating and a preparation method thereof. The lithium ion wave-absorbing material is directly prepared into a plasma spraying slurry after a mixing and grinding of a synthesis raw material (manganese dioxide and a lithium-containing compound) and a doped metal (Fe, Cu, Ni, Al and the like), a wave-absorbing material (i.e. lithium manganate) is synthesized in a spraying process, and a plurality of process steps such as wave-absorbing material preparation, granulation and spraying are concentrated into one, so that the process is simpler, and since the doped metal is mixed with the synthesis raw material first, the doped metal is directly doped in a microcrystal structure of the lithium manganate compound, a wave-absorbing material with better uniformity is formed, and the technical problem that the preparation of the wave-absorbing material, the preparation of the master batch and the preparation of the coating are carried out in steps, the process is complex and loss is prone to occur in the prior art is solved.