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Title: Process for slip casting textured tubular structures

Abstract

A process for centrifugal slip casting a textured hollow tube. A slip made up of a carrier fluid and a suspended powder is introduced into a porous mold which is rotated at a speed sufficient to create a centrifugal force that forces the slip radially outward toward the inner surface of the mold. The suspended powder, which is formed of particles having large dimensional aspect ratios such as particles of superconductive BSCCO, settles in a textured fashion radially outward toward the mold surface. The carrier fluid of the slip passes by capillary action radially outward around the settled particles and into the absorbent mold. A layer of mold release material is preferably centrifugally slip cast to cover the mold inner surface prior to the introduction of the BSCCO slip, and the mold release layer facilitates removal of the BSCCO greenbody from the mold without fracturing.

Inventors:
; ;
Issue Date:
Research Org.:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
874192
Patent Number(s):
6335065
Application Number:
09/438,011
Assignee:
Purdue Research Foundation (West Lafayette, IN)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B28 - WORKING CEMENT, CLAY, OR STONE B28B - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
FG02-90ER45427
Resource Type:
Patent
Resource Relation:
Patent File Date: 1999 Nov 10
Country of Publication:
United States
Language:
English
Subject:
/428/264/505/

Citation Formats

Steinlage, Greg A., Trumble, Kevin P., and Bowman, Keith J. Process for slip casting textured tubular structures. United States: N. p., 2002. Web.
Steinlage, Greg A., Trumble, Kevin P., & Bowman, Keith J. Process for slip casting textured tubular structures. United States.
Steinlage, Greg A., Trumble, Kevin P., and Bowman, Keith J. Tue . "Process for slip casting textured tubular structures". United States. https://www.osti.gov/servlets/purl/874192.
@article{osti_874192,
title = {Process for slip casting textured tubular structures},
author = {Steinlage, Greg A. and Trumble, Kevin P. and Bowman, Keith J.},
abstractNote = {A process for centrifugal slip casting a textured hollow tube. A slip made up of a carrier fluid and a suspended powder is introduced into a porous mold which is rotated at a speed sufficient to create a centrifugal force that forces the slip radially outward toward the inner surface of the mold. The suspended powder, which is formed of particles having large dimensional aspect ratios such as particles of superconductive BSCCO, settles in a textured fashion radially outward toward the mold surface. The carrier fluid of the slip passes by capillary action radially outward around the settled particles and into the absorbent mold. A layer of mold release material is preferably centrifugally slip cast to cover the mold inner surface prior to the introduction of the BSCCO slip, and the mold release layer facilitates removal of the BSCCO greenbody from the mold without fracturing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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Works referenced in this record:

Slip casting high-T c superconductors
journal, July 1989


Magnetic shield of high-T/sub c/ Bi-Pb-Sr-Ca-Cu-O superconductors at 77 K for SQUID measurements
journal, March 1991


Effects of silver additions on resistance to thermal shock and delayed failure of YBa 2 Cu 3 O 7−δ superconductors
journal, June 1993


New method for fabrication of superconducting pipes in the Bi–Sr–Ca–Cu–O system
journal, January 1993