MANUFACTURING METHOD OF SILICON INGOT, SILICON INGOT, AND VESSEL FOR MANUFACTURING SILICON INGOT

Title:

MANUFACTURING METHOD OF SILICON INGOT, SILICON INGOT, AND VESSEL FOR MANUFACTURING SILICON INGOT

Document Type and Number:

Japanese Patent JP2008088034

Kind Code:

A

Abstract:

To provide a manufacturing method of a silicon ingot restraining the generation of crack with a high probability.

In this invention, in manufacturing a silicon ingot by charging feed silicon in a vessel, melting it in the vessel, and then solidifying it, melting and solidifying of silicon is carried out through the intervention of a protecting layer which contains silicon nitride and whose oxygen content is regulated in the range of over 5 mass% by addition of silica having a particle diameter of not larger than 30 m and an aspect ratio of not greater than 10, between the inner surface of the vessel and the silicon to be melted and solidified in the vessel.

More Like This:

JP2009184922	FLOWABLE CHIP, AND METHOD FOR USING THE SAME
JP6492195	Composite powder used for the anode of lithium-ion batteries, methods for manufacturing composite powders, and lithium-ion batteries
JP4340124	Silicon casting equipment

Inventors:

YAMAZAKI HISAO
HIWASA SHOICHI
OSANAI HISASHI
BABA HIROYUKI
HARA KAZUAKI

Application Number:

JP2006273127A

Publication Date:

April 17, 2008

Filing Date:

October 04, 2006

Export Citation:

Click for automatic bibliography generation Help

Assignee:

JFE STEEL KK

International Classes:

C01B33/02; B22D25/04

Attorney, Agent or Firm:

Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma

Previous Patent: MANUFACTURING METHOD OF CERAMIC FILM

Next Patent: MOLTEN SOLDER COATING APPARATUS AND MOLTEN SOLDER COATING METHOD