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What is deference Metal silicon with oxygen and no oxygen

What is deference Metal silicon with oxygen and no oxygen

Metal silicon with oxygen and no oxygen

Anyang Weiyuan Alloy provides professional Metallic silicon price information, high-quality products, and excellent delivery services.

Metallic silicon is a silicon material with a purity of up to 99.999%, which is widely used in solar photovoltaics, semiconductors, integrated circuits and other fields. In the production process of industrial silicon, there are two process methods: oxygen and oxygen-free. Oxygen is passed through the heating furnace to process raw silicon into silicon single crystal or polycrystalline silicon through a redox reaction; oxygen must not be processed without adding oxygen.

Metallic silicon

Metallic silicon lump composition


 

Metallic silicon Lump

Chemical composition%
Si Fe Al Ca p
1101 99.79 0.1 0.1 0.01 0.004
2202 99.58 0.2 0.2 0.02 0.004
3303 99.37 0.3 0.3 0.03 0.004
421 99.3 0.4 0.2 0.1 0.004
441 99.1 0.4 0.4 0.1 0.004
553 98.7 0.5 0.5 0.3 0.004
97# 97 1.8max 0.6-0.8 0.3-0.5max 0.004

The difference between Metallic silicon oxygenated and non-oxygenated


Reaction products: When metal silicon passes oxygen, it undergoes oxidation reaction with oxygen to form silicon dioxide (SiO2). In the absence of oxygen, a layer of oxide film primarily composed of silicon dioxide forms on the surface of metal silicon.

Reaction rate: When oxygen is present, the oxidation rate of metal silicon is relatively fast because oxygen can directly react with metal silicon. In the absence of oxygen, metal silicon remains relatively stable, and the formation rate of the oxide film is slower.

Surface characteristics: When oxygen is present, the surface of metal silicon may have a rough layer of silicon dioxide. In the absence of oxygen, the oxide film formed on the surface of metal silicon is relatively smooth and dense, providing a certain degree of corrosion resistance and oxidation resistance.

Electrical properties: When oxygen is present, the silicon dioxide formed by the reaction of metal silicon and oxygen exhibits insulating properties and can be used to manufacture insulation layers or materials. In the absence of oxygen, metal silicon is a semiconductor material with specific electrical conductivity.

Application fields: The reaction of metal silicon with oxygen can be used in various fields such as the preparation of silicon dioxide films, optical devices, and integrated circuits. In the absence of oxygen, metal silicon is commonly used in the preparation of semiconductor materials, solar cells, and optoelectronic devices. The characteristics of the oxide film play an important role in device performance.

Thermal chemical stability: Silicon dioxide formed by the reaction of metal silicon and oxygen under oxygen-passing conditions exhibits high thermal chemical stability and can remain stable in high-temperature environments. In the absence of oxygen, the thermal chemical stability of metal silicon is relatively low.

Thermal conductivity: Silicon dioxide formed by the reaction of metal silicon with oxygen exhibits good thermal conductivity when oxygen is present. In the absence of oxygen, the thermal conductivity of metal silicon is lower.

Silicon metal 553

Why Chose WeiYuan Alloy


1. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final inspection before shipment;

 

2. What services can we provide?
Accepted Delivery Terms: FOB, CFR, CIF;
Accepted Payment Type: T/T, L/C;

 

3. When can we get free samples and goods?
For samples, 1 KG is available for quality check and market test, delivery time within 2 days, ship by air transport door to door.

 

4. What’s the MOQ and delivery time?
For bulk order, 20T delivery time within 5-7 working days, 100T delivery time 10-15 working days.

 

5. What’s your payment terms?
For samples, FREE Samples will be sent immediately if there are in stock.
For bulk orders, T/T 30% as deposit and T/T 70% before delivery

 

 

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