The difference between silicon metal with oxygen and silicon metal without oxygen refers to the presence or absence of oxygen in the preparation process of silicon metal, which affects the properties of the material.

Silicon metal with oxygen, also known as oxygenated silicon metal, is produced by introducing oxygen gas during the manufacturing process, which increases the oxygen content in the silicon metal. The oxygen atoms combine with the silicon atoms to form silicon oxide molecules, which create a layer of oxide film on the surface of the silicon metal. This oxide film enhances the chemical stability and corrosion resistance of the silicon metal.

In contrast, silicon metal without oxygen, also known as non-oxygenated silicon metal, is produced without the introduction of oxygen gas during the manufacturing process. As a result, the oxygen content in the silicon metal is lower, and there is no oxide film covering the surface of the silicon metal. Therefore, it has lower chemical stability and corrosion resistance compared to oxygenated silicon metal.

In addition, oxygenated silicon metal and non-oxygenated silicon metal may also have different physical and chemical properties, such as crystal structure, conductivity, melting point, etc.

In summary, the difference between silicon metal with oxygen and silicon metal without oxygen lies in the preparation process and the resulting material properties.