Title:
【発明の名称】ガラス質シリカ製容器の品質改良法
Document Type and Number:
Japanese Patent JPS62501067
Kind Code:
A
Abstract:
PCT No. PCT/GB85/00499 Sec. 371 Date Jul. 7, 1986 Sec. 102(e) Date Jul. 7, 1986 PCT Filed Nov. 4, 1985 PCT Pub. No. WO86/02919 PCT Pub. Date May 22, 1986.An improved quality vitreous silica boby and/or improved quality product made at high temperature in a vitreous silica vessel is/are obtained by applying a polarizing potential across the boundary surfaces of the vitreous silica body or vessel to cause migration of impurity ions away from one of the boundary surfaces thereof. Single crystal silicon (10) of reduced alkali content is drawn from melt (12) in a vitreous silica crucible (14) with a polarizing voltage applied across the wall of the crucible.
Inventors:
Winterburn, Jiyoung Alexander
Application Number:
JP50486085A
Publication Date:
April 30, 1987
Filing Date:
November 04, 1985
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO.,LTD.
International Classes:
C03B20/00; C03B5/08; C03B19/04; C03B23/04; C03B32/00; C03C23/00; C30B15/10; C30B15/18; (IPC1-7): C03B20/00; C03B23/04; C03B32/00; C30B15/10
Attorney, Agent or Firm:
Kyozo Yuasa