GB2553481A - Leachable ceramic materials for use in casting - Google Patents

Leachable ceramic materials for use in casting Download PDF

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Publication number
GB2553481A
GB2553481A GB1800344.2A GB201800344A GB2553481A GB 2553481 A GB2553481 A GB 2553481A GB 201800344 A GB201800344 A GB 201800344A GB 2553481 A GB2553481 A GB 2553481A
Authority
GB
United Kingdom
Prior art keywords
casting
phase
ceramic materials
alumina
matrix phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1800344.2A
Other versions
GB201800344D0 (en
Inventor
Larson Eric
Mccracken Douglas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Morgan Advanced Ceramics Inc
Original Assignee
Morgan Advanced Ceramics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Morgan Advanced Ceramics Inc filed Critical Morgan Advanced Ceramics Inc
Publication of GB201800344D0 publication Critical patent/GB201800344D0/en
Publication of GB2553481A publication Critical patent/GB2553481A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

A method of supporting mould parts and/or cores in investment casting comprises the use of supports comprising support material comprising a mechanically supportive continuous matrix phase comprising alumina; and at least one second phase interpenetrating the matrix phase and providing a pathway for leachants to penetrate into the material.

Description

71) Applicant(s):
Morgan Advanced Ceramics Inc.
(Incorporated in USA - California)
2425, Whipple Road, Hayward 94544, California, United States of America (72) Inventor(s):
Eric Larson Douglas Mccracken (74) Agent and/or Address for Service:
Phillips & Leigh
Pemberton Row, LONDON, EC4A 3BA,
United Kingdom (51) INT CL:
B22C 1/00 (2006.01) B22C 9/00 (2006.01) (56) Documents Cited:
EP 0539317 A1 US 4221594 A
Advanced Materials Research, Vol. 554-556, January 2012, LG Wang, Effect of SiO2 Micro-Powders on the Properties of Alumina-Based Ceramic Core, pp. 731-735
Anonymous, 17 March 2017, Micro particles based on silicon dioxide size: 0.5 [mu]m, Sigma-Aldrich [online], Available from URL: [2017-03-20]
Materials Science and Engineering: A, Vol. 508, Nos. 1-2, May 2009, Y Qin, Effect of Silica sol on the properties of alumina-based ceramic core composites, pp. 71-75
Key Engineering Materials, Vol. 368-372, January 2008, YX Qin, Propeties of In Situ Synthesized Alumina Ceramic Core Composites, pp. 724-725 (58) Field of Search:
INT CL B22C
Other: Online: EPO-internal, WPI (54) Title of the Invention: Leachable ceramic materials for use in casting Abstract Title: Leachable ceramic materials for use in casting

Claims (1)

  1. A method of supporting mould parts and/or cores in investment casting comprises the use of supports comprising support material comprising a mechanically supportive continuous matrix phase comprising alumina; and at least one second phase interpenetrating the matrix phase and providing a pathway for leachants to penetrate into the material.
    >
    This international application has entered the national phase early
GB1800344.2A 2016-02-05 2017-02-02 Leachable ceramic materials for use in casting Withdrawn GB2553481A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662291858P 2016-02-05 2016-02-05
PCT/EP2017/052209 WO2017134138A1 (en) 2016-02-05 2017-02-02 Leachable ceramic materials for use in casting

Publications (2)

Publication Number Publication Date
GB201800344D0 GB201800344D0 (en) 2018-02-21
GB2553481A true GB2553481A (en) 2018-03-07

Family

ID=57956306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1800344.2A Withdrawn GB2553481A (en) 2016-02-05 2017-02-02 Leachable ceramic materials for use in casting

Country Status (2)

Country Link
GB (1) GB2553481A (en)
WO (1) WO2017134138A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200406340A1 (en) 2017-08-08 2020-12-31 Morgan Advanced Ceramics, Inc. Leachable Ceramic Materials For Use In Casting

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221594A (en) * 1977-10-06 1980-09-09 General Electric Company Material composition for fired ceramic articles having a high degree of porosity and crushability characteristics
EP0539317A1 (en) * 1991-09-20 1993-04-28 United Technologies Corporation Process for making cores used in investment casting

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073662A (en) 1977-03-09 1978-02-14 General Electric Company Method for removing a magnesia doped alumina core material
US4187266A (en) 1977-10-06 1980-02-05 General Electric Company Process for making a ceramic article having a dense integral outer barrier layer and a high degree of porosity and crushability characteristics
GB1602027A (en) 1977-10-06 1981-11-04 Gen Electric Method for removing cores
GB2126569B (en) 1982-09-04 1986-01-15 Rolls Royce Non-silica based ceramic cores for castings
US4837187A (en) 1987-06-04 1989-06-06 Howmet Corporation Alumina-based core containing yttria
US5779809A (en) 1995-12-26 1998-07-14 General Electric Company Method of dissolving or leaching ceramic cores in airfoils

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221594A (en) * 1977-10-06 1980-09-09 General Electric Company Material composition for fired ceramic articles having a high degree of porosity and crushability characteristics
EP0539317A1 (en) * 1991-09-20 1993-04-28 United Technologies Corporation Process for making cores used in investment casting

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Advanced Materials Research, Vol. 554-556, January 2012, LG Wang, "Effect of SiO2 Micro-Powders on the Properties of Alumina-Based Ceramic Core", pp. 731-735 *
Anonymous, 17 March 2017, Micro particles based on silicon dioxide size: 0.5 [mu]m, Sigma-Aldrich [online], Available from URL: [2017-03-20] *
Key Engineering Materials, Vol. 368-372, January 2008, YX Qin, "Propeties of In Situ Synthesized Alumina Ceramic Core Composites", pp. 724-725 *
Materials Science and Engineering: A, Vol. 508, Nos. 1-2, May 2009, Y Qin, "Effect of Silica sol on the properties of alumina-based ceramic core composites", pp. 71-75 *

Also Published As

Publication number Publication date
WO2017134138A1 (en) 2017-08-10
GB201800344D0 (en) 2018-02-21

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)