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Manufacture of Ultrapure Silicon Powder

IP.com Disclosure Number: IPCOM000085669D
Original Publication Date: 1976-May-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Bohg, A: AUTHOR [+2]

Abstract

Silicon powder which is not contaminated by the abrasion occurring during the mechanical pulverization of larger silicon pieces is produced as follows?

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Manufacture of Ultrapure Silicon Powder

Silicon powder which is not contaminated by the abrasion occurring during the mechanical pulverization of larger silicon pieces is produced as follows?

Highly pure silicon is melted in a quartz vessel. Above the silicon is a slightly pressurized argon atmosphere which serves to force the silicon melt through the heated jet. The emerging melt is sputtered by a cold argon jet. The sputtered silicon cools down immediately and is collected in a quartz collector. By switching the jet heater on or off the melt flow can be interrupted or restarted at any time.

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