The United States, Japan and other western countries use rare earth hydrogen sto
Back
2023/03/18 11:02:54
Recently, a new kind of biomimetic Mg-Ni-Ti composite material has been developed by Chinese and foreign research institutes. The composite not only realizes the complementarity and combination of Nitinol and magnesium matrix in performance advantages, but also makes the material have self-healing function.
According to the researchers, the new MG-Ni-Ti bionic composite can improve the strength and damping properties respectively through multiple mechanisms, break through the mutual restriction relationship between the two, and achieve a good combination of the strength, damping and energy absorption efficiency of magnesium alloy, and can even be comparable to some commonly used polymer materials. It has obvious advantages in shock absorption, energy absorption, noise reduction and so on. It is expected to become a new damping material for precision instruments, aerospace and other fields.
Rare earth hydrogen storage alloy material
Used to make tank batteries
At present, the lead-acid battery which is widely used in tanks and vehicles needs to be charged frequently because of its low capacity and high self-discharge rate, and its maintenance and handling are very inconvenient, which restricts the play of tank combat performance. To this end, the United States, Japan and other countries using rare earth hydrogen storage alloy materials made a new battery. The battery has the characteristics of high energy density, overcharge resistance, earthquake resistance, good low-temperature performance, long life, etc., which can play a very important supporting role in the future development of the main battle tank.
It is reported that rare earth hydrogen storage alloy materials are the key materials for the production of high capacity, wide temperature area, high technology and low power consumption of nickel metal hydride power batteries. Hydrogen storage alloy batteries are more environmentally friendly than nickel-cadmium batteries and safer than lithium batteries.
In addition, the hydrogen storage density of hydrogen storage alloy materials is very high, which is many orders of magnitude higher than the density of hydrogen in the standard state, even higher than the density of liquid hydrogen. Therefore, it is light and safe to use it as a container to store and transport hydrogen.
New photocontrolled ferroelectric material
Use photosensitive technology to store information
In the era of intelligent industry 4.0, low power consumption, high performance memory becomes more important, while traditional storage devices with high power consumption, slow speed and other problems, has been unable to meet the current requirements for memory. In recent years, researchers at the Institute of Materials Research in Barcelona have developed a new type of light-controlled ferroelectric material memory, which has the characteristics of low power consumption, high performance and multi-function, and can realize the optical storage of information.
The memory is a new type of memory based on photosensitive ferroelectric materials and designed by using nanotechnology and quantum effects. The ferroelectric material is photocontrolled and can switch polarization. By inputting pulsed light, the polarization direction inside the ferroelectric material film can be modulated to control the amount of charge passing through the current of the ferroelectric material, so as to realize the modulation of the resistance state of the ferroelectric material, and finally complete the information storage.
In addition, the memory has high stability, the stored information is non-volatile, even when the power is turned off, the stored information can be retained in the device. The device can be used not only in general memory, but also in neuromorphic vision and other high-end systems, which has a broad application prospect in the future military field.
Previous
