| | | | | | | | | 2017/10/23 12:27:55 プライベート♪ | | | Nano - engineering Laser Treatment | |
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Aluminum is widely used in many fields, such as the automotive industry, shipbuilding, aerospace, construction and medicine. In most cases, these areas require aluminum alloy surface with some special properties. Used in the medical field and marine areas, the aluminum alloy must also have high corrosion resistance, high insulation, good anti-fouling properties, excellent wear resistance and waterproof performance. And applied to the field of aviation and space, aluminum cold performance, wear resistance and hydrophobic performance has become a key performance. Recently, the surface treatment technology for obtaining superhydrophobic properties on the surface of aluminum alloy has attracted wide attention. The technology solves some of the shortcomings of aluminum alloy performance, while giving the surface of the multi-functional aluminum alloy, but the super-hydrophobic coating in the good resistance to mechanical load and resistance to chemical shocks or encountered a lot of unresolved problems. In this paper, aluminum-magnesium alloy as the matrix material, through the functional nano-engineering and nanosecond green laser pointer texturing technology to prepare with excellent mechanical properties and chemical properties of super-hydrophobic aluminum alloy, for other materials, hydrophobic coating design provides a reference Research ideas.
Although there is no definite conclusion on the selection of a particular weight-raising manufacturing process, there has been a significant advance in the production of aero-engine metal parts based on direct laser sintering (DMLS) and electron beam melting based on the powder bed process. Powder laser deposition and electronic arc deposition based on filled wire. The versatility of each process means that there is no single solution. The powder bed process has the capability of high resolution and creating very complex geometric shapes, but the size and construction speed are limited. The powder and wire process offers unrestricted construction volumes and higher deposition rates, as well as the ability to integrate parts into the construction strategy.
The United States two companies to develop the world's first lunar burning laser communication lines, data transmission capacity per second reached 1000 trillion, the specific implementation method is unknown. But from the data, this speed is still very fast. Laser communication is a high-level communication technology, human has been developed for many years, but the progress is not large. Today, two US companies are expected to turn their dreams into reality, to ensure that high-definition video transmission, data-intensive experiments easily achieved, and even through the moon to experience the latest reality of virtual reality. Of course, since the United States in the late 60s of last century after the success of the moon, so far no country to board the moon. Lunar laser communication technology to become practical technology, but also depends on the future development.
Terahertz (THz) radiation usually refers to the frequency of 0.1THz-10THz range of electromagnetic radiation, the band is located between the microwave and infrared light, human beings have not yet fully understood and used to make the last wave (light) spectrum interval. The material's terahertz spectrum (including emission, reflection, and transmission) contains abundant physical and chemical information that studies the spectral response of the material in this band, explores its structural properties and the new physical content it has revealed as a new The research direction. Free Electron Laser (FEL) has the advantage of having the frequency continuously adjustable, the power is large, the line width is narrow, the direction is good, the polarization is strong, so that the terahertz source with the terahertz band full coverage on the same device becomes possible , so the free electron red laser is currently the most promising high power tunable coherent light source.
A series of experiments have proved that functional nanotechnologies and suitable nanosecond laser texturing processes can be used to produce superhydrophobic materials with excellent mechanical properties and chemical properties. The effects of surface morphology, elemental analysis and microstructure of SPLT samples and SPTT samples and SPLT superhydrophobic samples, anti-corrosion properties of ILT superhydrophobic samples and reference superhydrophobic samples, thermal shock resistance and abrasion resistance and hydrophobic properties, it was found that the morphology of aluminum nitrogen oxides, γ - Al2O3 and the surface formed by high power laser pointer treatment had a significant effect on the performance of the samples.
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