Silicon powder and a method for producing silicon powder by gas

Details Silicon powder and a method for producing silicon powder by gas Silicon powder and a method for producing silicon powder by gas

1990-12-10

1992-03-10

Chaudhuri, Olik

Chemistry of inorganic compounds

Silicon or compound thereof

Elemental silicon

423348, C01B 3302

Patent

active

050948326

ABSTRACT:
The present invention relates to a silicon powder, which is characterized in that it is produced by gas atomizing of molten silicon and having a particle size between 0,1 and 1000 .mu.m, a specific surface area between 0.001 and 1 m.sup.2 /g, and the following chemical composition in percent by weight:
0.1-1% iron, 0.01-1% aluminium, 0-8% copper, 0-1% calcium, 0-1% zinc, 0-1% tin, 0-5% boron, 0-0.5% phosphorus, 0-0.5% sodium, 0-0.5% lithium, 0-0.5% potassium, 0-0.5% magnesium, 0-0.5% strontium, 0-0.5% barium, 0-0.5% beryllium, the rest being silicon and less than 0.3% impurities such as Ti, V, Cr, Mo, W and Zr.

REFERENCES:
patent: 3592391 (1971-07-01), Bender et al.
patent: 4298423 (1981-11-01), Lindmayer
patent: 4347199 (1982-08-01), Speier et al.
patent: 4419060 (1983-12-01), Speier et al.
patent: 4828814 (1989-05-01), Sanjurjo et al.

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