6results about How to "Uniform preparation" patented technology

The method for preparing an amorphous silicon thin film according to the present invention includes: placing a substrate in a vacuum chamber; controlling the pressure in the vacuum chamber at a predetermined value and performing surface treatment on the substrate; and introducing silane gas and a rarefied gas into the vacuum chamber, heating the substrate, and depositing an amorphous silicon thin film on the substrate using silane gas ions. This method is characterized by low manufacturing difficulty, simple process, and low cost, while improving the growth rate and uniformity of the thin film, making the manufacturing process more stable and controllable, and resulting in a more uniform, dense, and stable amorphous silicon thin film.

The application discloses high-entropy rare earth silicate ceramic nano powder and a preparation method and application thereof. The preparation method of the high-entropy rare earth silicate ceramic nano powder comprises the following steps: 1) dissolving rare earth oxide powder in an acid solution to prepare a rare earth salt solution; 2) mixing the rare earth salt solution and a sodium silicate solution, adding ammonia water to perform chemical co-precipitation, then performing standing and aging, and then taking the precipitate to perform drying to obtain a precursor powder; and 3) placing the precursor powder under the condition that the temperature is 1100 DEG C to 1200 DEG C to perform calcination. The high-entropy rare earth silicate ceramic nano powder has excellent characteristics such as small particle size, uniform element distribution, large component space and no impurity phase, and the preparation method has the advantages of low synthesis temperature, simple equipment, simple and controllable process, low industrialization cost and the like, is suitable for being used on a hot end part of an aerospace engine and has a very wide application prospect.

The utility model belongs to conductive material technical field discloses a kind of substrate surface conductive polyaniline coating continuous processing device, for processing conductive polyaniline coating to substrate surface, comprising: DBD plasma processor, including plasma power supply, plasma power supply output end is connected with discharge electrode, plasma power supply ground end is connected with ground electrode, ground electrode and discharge electrode are placed in parallel, and gap for substrate passing is left between ground electrode and discharge electrode, DBD plasma processor is used to carry out hydrophilization and roughening treatment to substrate surface;Liquid storage system, liquid storage system includes three liquid storage tanks, three liquid storage tanks are respectively filled with aniline monomer solution, doped acid solution and oxidizing agent solution;The problems existing in the prior art that the preparation process is complex, the coating uniformity and the conductivity are not good are solved, the processing efficiency and the quality of the conductive polyaniline coating are effectively improved, and the continuous production of environmental protection and controllable morphology is ensured.

The invention belongs to the technical field of material surface engineering, and particularly relates to a simple and efficient preparation method of a multi-scale particle triple-strengthened medium-entropy alloy-based wear-resistant coating. In order to solve the problems that in an existing ceramic particle reinforced metal matrix composite wear-resistant coating, a single-scale reinforced phase is uneven in distribution, and the strengthening effect is limited, the invention innovatively provides a synergistic strengthening mechanism based on additional particles and in-situ precipitation. A multi-scale carbide enhancement system is constructed in a CoNiV medium-entropy alloy matrix through a laser cladding technology, and the principle of the multi-scale carbide enhancement system is elaborated; through unique configuration of a laser cladding original material system and advancement of a strategy method, it is ensured that WC particles are moderately dissolved in a CoNiV medium-entropy alloy matrix, and meanwhile the integrity of the original morphology of the WC particles is reserved; and submicron V-C spherical particle precipitates and quasi-continuous (V, W) C precipitated phases on crystal boundaries are precipitated in situ in the coating matrix, and triple synergistic strengthening is achieved, so that the surface hardness and wear resistance of the metal material are remarkably improved.

This application provides a biomimetic mineralized hydrogel, relating to the field of medical polymer materials. The biomimetic mineralized hydrogel provided in this application uses a biodegradable polymer containing carboxylate groups as a mineralization template, and phosphate-containing small molecules as strong ligands and phosphate donors, inducing Fe... 3+ In-situ mineralization forms stable iron-bearing mineralized crystals, achieving Fe³⁺ + Long-term, low-dose sustained release, thereby delivering Fe 3+ The concentration is maintained within a safe window to allow it to exert its positive bioregulatory effects while avoiding the risks of iron overload-induced oxidative damage and ferroptosis. Simultaneously, it slows the release of Fe³⁺. + It can regulate cellular iron metabolism and activate antioxidant stress-related pathways, inhibit ferroptosis, and create a favorable repair microenvironment for osteochondral regeneration. Experimental results show that this hydrogel not only has excellent flexibility, biocompatibility, antibacterial properties, and angiogenesis-promoting properties, but also promotes osteogenic and chondrogenic differentiation of cells, thereby achieving an integrated osteochondral repair effect.

The application discloses an oil core microcapsule preparation device and a drop forming method, wherein the oil core microcapsule preparation device comprises a drop head module, a vibration element, an oil phase channel, an aqueous phase channel, a cooling phase channel, a cooling forming pipe, a collection box and a cooling box; the drop head module comprises an oil phase inlet, an aqueous phase inlet, a cooling phase inlet, an oil phase drop head, an aqueous phase drop head, a cooling phase shunt and a cooling liquid outlet; the vibration element comprises a reciprocating motor, an eccentric shaft connecting rod, and the lower end of the eccentric shaft connecting rod is above the oil phase channel; the upper end of the cooling forming pipe is connected with the outlet, and the lower end extends into the collection box; and the cooling box is arranged below the collection box. The application is favorable for improving the preparation speed and stability of the oil core microcapsule, the size uniformity of the oil core microcapsule, and effectively improving the quality of the oil core microcapsule product.