Is Si Metal Powder Useful?
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Is metal silicon powder useful?
The preparation method of metal silicon powder is relatively simple and easy, and the preparation principle is also very simple and easy to understand. That is, after a certain amount of coarse silicon powder is dispersed, it is sent into the plasma arc with inert gas, and instantly heated, so that the coarse silicon powder is instantly evaporated into silicon vapor at a relatively high temperature, and then the silicon vapor enters the cooling zone and condenses into nano-scale metal silicon powder.
1. Chemical vapor deposition: Under the action of external energy such as heat, microwave, laser, plasma, etc. Silane decomposes into silicon and hydrogen under high hydrogen dilution conditions, and then quickly condenses in a gas phase environment to prepare nano-silicon powder.
2. Ball milling method: Using the huge friction generated by mechanical rotation and the interaction between particles, large-sized silicon materials are ground into nano-scale powders. The metal silicon powder produced by the ball milling method has a high impurity content, the particle size distribution cannot be well controlled, and the post-processing is complicated.
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