Title:
セラミック材料からなる中空体の製造方法
Document Type and Number:
Japanese Patent JP4555417
Kind Code:
B2
Abstract:
A method of forming hollow bodies of ceramic material suitable for use as the discharge vessels of high intensity discharge lamps comprises forming a fugitive core of substantially pure graphite having a configuration matching the interior configuration of the hollow body. A flowable powder, including binders, of the ceramic material is formed and added to fill the annular space between a flexible elastomeric mold defining the outer contour and the fugitive core defining the inner contour. The ceramic powder is isostatically compressed in the mold about the core to form a sub-assembly. The sub-assembly is removed from the mold, heated at a rate and time and in a suitable atmosphere to volatilize the fugitive core, and subsequently the sub-assembly is sintered to form the hollow body.
Inventors:
Carlene Jay Zoouk
Jeffrey T. Nail
Christopher A. Tally
Jeffrey T. Nail
Christopher A. Tally
Application Number:
JP28164399A
Publication Date:
September 29, 2010
Filing Date:
October 01, 1999
Export Citation:
Assignee:
OSRAM SYLVANIA Inc.
International Classes:
B28B21/42; B28B1/00; B28B3/00; B28B7/34; C04B35/111; C04B35/115; H01J9/24
Domestic Patent References:
| JP10232290A | ||||
| JP5177619A | ||||
| JP49001605A |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Toshiomi Yamazaki
Takuya Kuno