43results about How to "Change surface topography" patented technology

The invention discloses a TCO (transparent conducting oxide) thin film and a preparation method thereof. The TCO thin film comprises three zinc oxide thin film layers containing dopants from top to bottom, wherein the atom ratios of dopants in the zinc oxide thin film layer are different in zinc oxide. In the preparation method, dopant gas flows are adjusted in the thin film growing process to form a multiple-layer structure and modulate a surface microstructure and the optical performance of the TCO thin film, wherein the middle and an interface of the multiple-layer structure are different in dosage concentration. The light trapping effect of the film and the optical transmittance of a near-infrared light region can be greatly improved while good electrical conductivity of the TCO film and the interface of the film are maintained, a haze average value of a 400-1100nm waveband is improved from 27.3% to 34.9 %, the transmittance of a 700-2000nm near-infrared waveband is improved from 76% to 77.7%, and the photoelectric conversion efficiency of batteries is improved.

The invention relates to a deposition method capable of enhancing the preferred orientation growth of an AlN film. The deposition method comprises the following steps: adopting an ion beam-assisted deposition technique to prepare an AlN homogeneous transition layer: when using an Ar + ion beam of 2.0-2.5keV / 20-50mA for depositing an Al film in a sputtering way on a substrate, using a moderate-energy N+ ion beam of 20-35keV / 2-8mA for bombarding the Al film in an assisting way; and then depositing the AlN film by adopting magnetron sputtering, wherein base pressure is less than or equal to 5x10<-4>Pa, working air pressure is 0.5-10Pa and substrate temperature is 200 DEG C-500 DEG C. Through pre-depositing the homogeneous transition layer, the invention has the advantages that the internal stress between the film and the substrate can be effectively reduced, the full (002) orientation AlN film is formed, the surface roughness of the film is reduced, the bonding strength between the film and the substrate is increased and the film product can satisfy the requirements on the application in surface acoustic wave devices, acoustic bulk wave devices and other microelectronic devices and power devices.

An enhanced asphalt rejuvenator and its preparation method, the asphalt rejuvenator includes the following components in parts by mass: 10-60 parts of regeneration components, the regeneration components include mixing light oil and heavy oil in an appropriate proportion 1-30 parts of ultra-fine powder, the ultra-fine powder is a porous structure ultra-fine powder obtained through low-temperature plasma modification, and the average particle size of the powder is less than 100 μm. The invention can obtain the superfine powder reinforced asphalt rejuvenator with good dispersing effect and high compatibility. The improvement is relatively large, especially its anti-secondary aging performance has been greatly improved, thereby prolonging the service life of the pavement paved with recycled asphalt mixture, and it is expected to reduce the post-maintenance cost of the paved road in engineering.

The present invention provides a γ-C 2 The activation modification method of S, the activation modification method, comprises the following steps: 1) according to the calcium-silicon molar ratio of 2:1, mixes the calcium raw material and the silicon raw material, then, adds the metal ion compound, mixes by ball milling, and obtains sintering raw materials; 2) mixing the sintering raw materials with 10% alcohol, pressing them into green bodies, drying, sintering, and natural cooling to obtain metal ion-doped γ-C 2 S. The present invention adopts metal ion doping firing pair γ-C 2 S was modified to prepare γ‑C with high specific surface area and high carbonization activity 2 S, and after being doped with metal ions and fired, the metal ions are enriched at the grain boundaries and replace part of the calcium ions to form a continuous solid solution. The carbonized products prepared by the activated γ-C2S have a higher degree of carbonization and resistance to carbonization. compressive strength.

The invention relates to the technical field of energetic materials, and specifically discloses a metal corrosion resistant insensitive ammunition and a preparation method thereof, wherein the metal corrosion resistant insensitive ammunition comprises the following components by weight: 0-10% of layered MXene and 90-100% of 3-nitro-1,2,4-triazole-5-ketone; the preparation method firstly etches the aluminum layer in the MAX phase with hydrofluoric acid to obtain layered MXene, and then combines the layered MXene with NTO The raw materials are dissolved in anhydrous ethanol in proportion, and finally the metal corrosion-resistant insensitive ammunition is obtained through evaporative crystallization. In the invention, the anti-metal corrosion type insensitive ammunition not only enhances the anti-metal corrosion performance of NTO, but also further reduces the impact sensitivity and friction sensitivity of NTO; the preparation method is simple, and the MAX phase is etched with hydrofluoric acid to obtain conductive MXenes, and then The MXenes and NTO were prepared by recrystallization method, which has practical application value.