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GB2012309A - Boric oxide or boric acid sintering aid for sintering ceramics - Google Patents

Boric oxide or boric acid sintering aid for sintering ceramics

Info

Publication number
GB2012309A
GB2012309A GB7900548A GB7900548A GB2012309A GB 2012309 A GB2012309 A GB 2012309A GB 7900548 A GB7900548 A GB 7900548A GB 7900548 A GB7900548 A GB 7900548A GB 2012309 A GB2012309 A GB 2012309A
Authority
GB
United Kingdom
Prior art keywords
sintering
boric
sintering aid
ceramics
oxide
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.)
Granted
Application number
GB7900548A
Other versions
GB2012309B (en
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.)
Unifrax I LLC
Original Assignee
Carborundum Co
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 Carborundum Co filed Critical Carborundum Co
Publication of GB2012309A publication Critical patent/GB2012309A/en
Application granted granted Critical
Publication of GB2012309B publication Critical patent/GB2012309B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • General Preparation And Processing Of Foods (AREA)

Abstract

A liquid sintering aid for densifying ceramic material is selected from solutions of H3BO3, B2O3 and mixtures of these solutions. In sintering ceramic articles, e.g. silicon carbide, a shaped green body is formed from a particulate ceramic material and a resin binder, and the green body is baked at a temperature of 500 to 1000 DEG C to form a porous body. The liquid sintering aid of B2O3 and/or H3BO3 is then dispersed through the porous body and the thus treated body is sintered at a temperature of 1900 to 2200 DEG C to produce the sintered ceramic article.
GB7900548A 1978-01-09 1979-01-08 Liquid sintering aid and methods of producing sintered ceramic articles using such and aid Expired GB2012309B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86786178A 1978-01-09 1978-01-09

Publications (2)

Publication Number Publication Date
GB2012309A true GB2012309A (en) 1979-07-25
GB2012309B GB2012309B (en) 1982-12-08

Family

ID=25350613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7900548A Expired GB2012309B (en) 1978-01-09 1979-01-08 Liquid sintering aid and methods of producing sintered ceramic articles using such and aid

Country Status (5)

Country Link
JP (1) JPS54101809A (en)
CA (1) CA1136388A (en)
DE (1) DE2900440A1 (en)
FR (1) FR2414030B1 (en)
GB (1) GB2012309B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026506A1 (en) * 1979-09-26 1981-04-08 Holec N.V. A process for the preparation of shaped, electrically conductive articles from silicon powder, as well as shaped articles obtained by using this process
EP0110053A1 (en) * 1982-11-25 1984-06-13 Hutschenreuther AG Method of manufacturing a dense polycrystalline silicon carbide article
WO2005102959A1 (en) * 2004-04-21 2005-11-03 Dow Global Technologies Inc. Method for increasing the strength of porous ceramic bodies and bodies made therefrom
US8999457B2 (en) 2009-07-31 2015-04-07 General Electric Company Methods for making environmental barrier coatings using sintering aids
US9005716B2 (en) 2009-07-31 2015-04-14 General Electric Company Method for making solvent based environmental barrier coatings using sintering aids
US9005717B2 (en) 2009-07-31 2015-04-14 General Electric Company Methods for making environmental barrier coatings using sintering aids
US9023435B2 (en) 2009-07-31 2015-05-05 General Electric Company Methods for making water based environmental barrier coatings using sintering aids
US9062564B2 (en) 2009-07-31 2015-06-23 General Electric Company Solvent based slurry compositions for making environmental barrier coatings and environmental barrier coatings comprising the same
US9771826B2 (en) 2009-07-31 2017-09-26 General Electric Company Components with environmental barrier coatings having improved surface roughness
RU2699337C2 (en) * 2017-11-24 2019-09-04 Акционерное Общество "Наука И Инновации" Method of processing porous implants based on metal materials

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5585467A (en) * 1978-12-15 1980-06-27 Hitachi Ltd Silicon carbide sintered body and its manufacture
JPS57160970A (en) * 1981-03-27 1982-10-04 Omori Mamoru Silicon carbide sintered formed body and manufacture
JPS6011269A (en) * 1983-06-27 1985-01-21 松下電器産業株式会社 Manufacture of nitride, carbide ceramic
IT1215202B (en) * 1986-12-03 1990-01-31 G E V I P I A G SEALING BODY IN HARD MATERIAL SINTERED BY A SEMI-FINISHED FORMED WITH AN ORGANIC BINDER

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938807A (en) * 1957-08-13 1960-05-31 James C Andersen Method of making refractory bodies
GB1175887A (en) * 1967-05-31 1970-01-01 Gen Electric & English Elect Improvements in or relating to the Manufacture of Articles of High Density Polycrystalline Refractory Oxide Material
GB1478898A (en) * 1973-10-24 1977-07-06 Gen Electric Silicon carbide ceramic
JPS543682B2 (en) * 1974-08-29 1979-02-26
US4312954A (en) * 1975-06-05 1982-01-26 Kennecott Corporation Sintered silicon carbide ceramic body

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026506A1 (en) * 1979-09-26 1981-04-08 Holec N.V. A process for the preparation of shaped, electrically conductive articles from silicon powder, as well as shaped articles obtained by using this process
EP0110053A1 (en) * 1982-11-25 1984-06-13 Hutschenreuther AG Method of manufacturing a dense polycrystalline silicon carbide article
WO2005102959A1 (en) * 2004-04-21 2005-11-03 Dow Global Technologies Inc. Method for increasing the strength of porous ceramic bodies and bodies made therefrom
US7381681B2 (en) 2004-04-21 2008-06-03 Dow Global Technologies Inc. Method for increasing the strength of porous ceramic bodies and bodies made therefrom
US7381680B2 (en) 2004-04-21 2008-06-03 Dow Global Technologies Inc. Method for increasing the strength of porous ceramic bodies and bodies made therefrom
CN101628824B (en) * 2004-04-21 2012-05-16 陶氏环球技术有限责任公司 Method of enhancing the strength of a porous ceramic body and ceramic bodies formed therefrom
US9005717B2 (en) 2009-07-31 2015-04-14 General Electric Company Methods for making environmental barrier coatings using sintering aids
US9005716B2 (en) 2009-07-31 2015-04-14 General Electric Company Method for making solvent based environmental barrier coatings using sintering aids
US8999457B2 (en) 2009-07-31 2015-04-07 General Electric Company Methods for making environmental barrier coatings using sintering aids
US9023435B2 (en) 2009-07-31 2015-05-05 General Electric Company Methods for making water based environmental barrier coatings using sintering aids
US9062564B2 (en) 2009-07-31 2015-06-23 General Electric Company Solvent based slurry compositions for making environmental barrier coatings and environmental barrier coatings comprising the same
US9771826B2 (en) 2009-07-31 2017-09-26 General Electric Company Components with environmental barrier coatings having improved surface roughness
US9926805B2 (en) 2009-07-31 2018-03-27 General Electric Company Solvent based slurry compositions for making environmental barrier coatings and environmental barrier coatings comprising the same
US10094237B2 (en) 2009-07-31 2018-10-09 General Electric Company Solvent based environmental barrier coatings for high temperature ceramic components
US10487686B2 (en) 2009-07-31 2019-11-26 General Electric Company Solvent based slurry compositions for making environmental barrier coatings and environmental barrier coatings comprising the same
RU2699337C2 (en) * 2017-11-24 2019-09-04 Акционерное Общество "Наука И Инновации" Method of processing porous implants based on metal materials
EA037685B1 (en) * 2017-11-24 2021-05-04 Акционерное Общество "Наука И Инновации" Method for processing porous metal-based implants

Also Published As

Publication number Publication date
CA1136388A (en) 1982-11-30
FR2414030B1 (en) 1985-08-09
GB2012309B (en) 1982-12-08
JPS6350310B2 (en) 1988-10-07
DE2900440C2 (en) 1987-06-25
DE2900440A1 (en) 1979-07-19
JPS54101809A (en) 1979-08-10
FR2414030A1 (en) 1979-08-03

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee