4results about How to "Dense microstructure" patented technology

The invention provides a collaborative optimization method for a magnetic-thermal composite field assisted laser cladding process. According to the method, a magnetic-thermal composite field-assisted laser cladding device is designed based on an energy field-assisted laser cladding process principle and is used for improving the structure and performance of a coating; the method comprises the following steps: generating a quadratic polynomial regression model on the basis of an RSM method, magnetic-thermal composite field assisted laser cladding process parameters and nickel-based composite coating quality evaluation indexes, performing multi-target optimization on the coating quality evaluation indexes on the basis of the quadratic polynomial regression model and an IMOGWO algorithm, determining a magnetic-thermal composite field assisted laser cladding target process parameter combination, and determining the quality of the nickel-based composite coating. And score calculation is carried out on the target process parameter combination based on an EWM-TOPSIS method to obtain a comprehensive evaluation sequence of the target process parameter combination, so that collaborative optimization of the magnetic-thermal composite field assisted laser cladding process is realized, and the performance optimization efficiency and quality of the nickel-based composite coating are improved.

This invention discloses a method for preparing rare earth metals by electrolytic oxides using a fluoride system, belonging to the field of rare earth metal preparation technology. This invention modifies graphite anodes used in rare earth molten salt electrolysis. It improves oxidation and corrosion resistance, reduces anode wear, lowers replacement frequency, and increases production efficiency, yielding high-purity, low-carbon rare earth metal lanthanum. A three-dimensional network framework material is constructed using Prussian blue self-assembly and SiC is deposited to obtain a composite framework material. During pre-calcination with graphite and other materials, the derivatives optimize the crystal structure and interfacial bonding, enhancing the strength of the pre-shaped anode material and ensuring the integrity and performance stability of the electrode structure. Thirdly, the pre-shaped anode material is impregnated with a specific impregnation solution, altering the gas diffusion path and resistance, inhibiting oxidation reactions, and high-temperature sintering generates substances that fill the pores, forming a dense microstructure. Simultaneously, the compounds formed by phosphoric acid enhance cohesion and adhesion, improving oxidation and molten salt corrosion resistance, and extending the service life of the graphite anode.

The application belongs to the technical field of anticorrosive coating and provides a silicon carbide modified waterborne alkyd resin anticorrosive coating and a preparation method thereof, a dense three-dimensional reinforcing network structure is constructed in the alkyd resin matrix by introducing silicon carbide particles and optimizing the synergic ratio of the silicon carbide particles, titanium dioxide and quartz powder fillers. The method effectively solves the problems of low hardness, poor medium resistance, uneven filler dispersion, weak interface bonding and difficulty in simultaneously improving mechanical and anticorrosive properties in the conventional physical filling modification due to low crosslinking density and many polar groups in the existing waterborne alkyd resin coating. The prepared coating has excellent comprehensive performance, the hardness can reach 2 H level, the gloss can reach 90%, the acid resistance, alkali resistance, salt water resistance and water resistance are significantly improved, and excellent electrochemical anticorrosive protection effect is exhibited on the metal matrix. The application is suitable for long-term anticorrosive protection of metal surfaces of steel structures, ships, bridges and the like, and has the characteristics of environmental protection and high performance.

The invention discloses a preparation method of a high-oil-phase solid plant-based fat analogue, which comprises the following steps: adding hydrophobic modified chitosan gel into a soybean protein isolate solution, then adding linseed oil and transglutaminase into the homogenized mixed solution, carrying out enzymatic crosslinking, and then putting into a calcium chloride solution for ionic crosslinking. According to the preparation method disclosed by the invention, a network structure is formed by carrying out enzyme induction on soybean protein isolate, and a double-network structure is formed by introducing hydrophobic modified chitosan microgel through ionic crosslinking and is used as a structural framework, so that the technical bottleneck that a stable three-dimensional network is difficult to form by traditional emulsion gel under a high-oil-phase condition is successfully broken through; the obtained fat analogue shows a highly compact and uniform microstructure, key texture parameters such as hardness, adhesion and chewiness of the fat analogue are remarkably improved along with structural optimization, high unification of high oil phase load and high-strength texture is realized, and solid taste and morphological stability of animal fat can be truly simulated.