Nano tungsten trioxide laser sintering method is a method of preparing nano tungsten trioxide material by using laser heating and sintering technology. In this method, the high energy density of the laser can rapidly heat the nanoparticles to a high temperature, enabling the sintering and solidification process.
The basic steps of nano-tungsten trioxide laser sintering method are as follows:
Preparation of nano tungsten trioxide powder
First, it is necessary to prepare nano-tungsten trioxide powder as a raw material. Nano tungsten trioxide powder is usually prepared by chemical synthesis or physical methods (such as sol-gel method, solvothermal method, vapor deposition method, etc.).
Pressing to prepare lumps
The nano tungsten trioxide powder is pressed to form a block. This step is usually performed using cold or hot pressing techniques to increase the compactness and consistency of the block.
Laser irradiation sintering
The pressed nano-tungsten trioxide block is placed under the laser beam and irradiated with the high energy density of the laser. The thermal energy of the laser is quickly transferred to the surface of the nanoparticles, initiating the sintering process.
Sintering and solidification
Simultaneously with laser irradiation, sintering occurs on the surface of the nanoparticles, melting and solidifying the contact points between the particles. This sintering process results in bonding between the nanoparticles to form a dense bulk of tungsten trioxide.
The advantage of the nano-tungsten trioxide laser sintering method is that the sintering process is highly controllable and can achieve high temperature sintering without causing significant particle growth and grain growth. This makes the prepared nano-tungsten trioxide material have a fine particle size and a high specific surface area, thereby retaining its nano-level characteristics and excellent performance. It is worth noting that the laser parameters (such as power, irradiation time) and the thermal conductivity properties of the sample need to be controlled during the laser sintering process to ensure a uniform and efficient sintering process.
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