DE2937740C2 - - Google Patents

Info

Publication number
DE2937740C2
DE2937740C2 DE2937740A DE2937740A DE2937740C2 DE 2937740 C2 DE2937740 C2 DE 2937740C2 DE 2937740 A DE2937740 A DE 2937740A DE 2937740 A DE2937740 A DE 2937740A DE 2937740 C2 DE2937740 C2 DE 2937740C2
Authority
DE
Germany
Prior art keywords
si3n4
sio2
weight
ceramic body
oxidation
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.)
Expired
Application number
DE2937740A
Other languages
German (de)
English (en)
Other versions
DE2937740A1 (de
Inventor
J. Thomas Acton Mass. Us Smith
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.)
Verizon Laboratories Inc
Original Assignee
GTE Laboratories 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 GTE Laboratories Inc filed Critical GTE Laboratories Inc
Publication of DE2937740A1 publication Critical patent/DE2937740A1/de
Application granted granted Critical
Publication of DE2937740C2 publication Critical patent/DE2937740C2/de
Granted 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
    • C04B35/515—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
    • C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
    • 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
    • C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
    • C04B35/593—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride obtained by pressure sintering

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)
DE19792937740 1978-09-20 1979-09-18 Oxidationsbestaendiges siliziumnitrid mit einem gehalt an seltenerdenoxid Granted DE2937740A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US94451578A 1978-09-20 1978-09-20

Publications (2)

Publication Number Publication Date
DE2937740A1 DE2937740A1 (de) 1980-04-03
DE2937740C2 true DE2937740C2 (xx) 1987-10-08

Family

ID=25481551

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792937740 Granted DE2937740A1 (de) 1978-09-20 1979-09-18 Oxidationsbestaendiges siliziumnitrid mit einem gehalt an seltenerdenoxid

Country Status (5)

Country Link
JP (1) JPS5542295A (xx)
CA (1) CA1123862A (xx)
DE (1) DE2937740A1 (xx)
FR (1) FR2436764B1 (xx)
GB (1) GB2032414B (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383958A (en) * 1981-12-21 1983-05-17 Gte Laboratories Incorporated Method of producing dense silicon nitride ceramic articles having controlled surface layer composition
US4400427A (en) * 1981-12-21 1983-08-23 Gte Laboratories Incorporated Sintered silicon nitride ceramic articles having surface layers of controlled composition
EP0107919A1 (en) * 1982-10-01 1984-05-09 The British Ceramic Research Association Limited Silicon nitride ceramic bodies
JPS59169980A (ja) * 1983-03-17 1984-09-26 フオ−ド・モ−タ−・カンパニ− 窒化ケイ素含有単一体およびその製造方法
JPS62207765A (ja) * 1986-03-06 1987-09-12 日本碍子株式会社 窒化珪素焼結体
DE3744692C2 (de) * 1986-03-28 1995-03-09 Ngk Insulators Ltd Siliciumnitridpulver und Verfahren zu seiner Herstellung
DE3709137A1 (de) * 1986-03-28 1987-10-15 Ngk Insulators Ltd Siliciumnitrid-sinterkoerper, verfahren zu ihrer herstellung und siliciumnitridpulver
US5292489A (en) * 1991-06-24 1994-03-08 Alliedsignal Inc. Ternary silicon-rare earth nitrides and process for their preparation

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830652A (en) * 1973-06-28 1974-08-20 Us Army Hot pressed, high strength silicon nitride
GB1482465A (en) * 1974-06-20 1977-08-10 Lucas Ltd Joseph Method of producing a sintered ceramic product
JPS566392B2 (xx) * 1974-04-01 1981-02-10
JPS56388B2 (xx) * 1974-06-28 1981-01-07
JPS5628865B2 (xx) * 1974-07-05 1981-07-04
US4073845A (en) * 1976-01-29 1978-02-14 Gte Sylvania Incorporated High density high strength S13 N4 ceramics prepared by pressureless sintering of partly crystalline, partly amorphous S13 N4 powder
US4102698A (en) * 1976-11-23 1978-07-25 Westinghouse Electric Corp. Silicon nitride compositions in the Si3 N4 -Y2 O3 -SiO2 system
JPS6016387B2 (ja) * 1977-03-25 1985-04-25 株式会社東芝 耐熱性材料の製造方法
JPS5532785A (en) * 1978-05-31 1980-03-07 Ford Motor Co Si3n44y2033si02 ceramic cutting tool useful for cast iron cutting work and its manufacture
EP0009859B1 (en) * 1978-05-31 1984-11-21 Ford Motor Company Limited Ceramic cutting tool composition, method of its manufacture and its use in machining cast iron

Also Published As

Publication number Publication date
FR2436764B1 (fr) 1990-08-24
CA1123862A (en) 1982-05-18
FR2436764A1 (fr) 1980-04-18
GB2032414A (en) 1980-05-08
JPS5542295A (en) 1980-03-25
GB2032414B (en) 1982-11-17
DE2937740A1 (de) 1980-04-03

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Legal Events

Date Code Title Description
8128 New person/name/address of the agent

Representative=s name: GRUENECKER, A., DIPL.-ING. KINKELDEY, H., DIPL.-IN

8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8305 Restricted maintenance of patent after opposition
D4 Patent maintained restricted
8339 Ceased/non-payment of the annual fee