ES2013684A6 - Process for producing a ceramic body from silicon nitride and a ceramic body produced in this way - Google Patents

Process for producing a ceramic body from silicon nitride and a ceramic body produced in this way

Info

Publication number
ES2013684A6
ES2013684A6 ES8902247A ES8902247A ES2013684A6 ES 2013684 A6 ES2013684 A6 ES 2013684A6 ES 8902247 A ES8902247 A ES 8902247A ES 8902247 A ES8902247 A ES 8902247A ES 2013684 A6 ES2013684 A6 ES 2013684A6
Authority
ES
Spain
Prior art keywords
si3n4
ceramic body
producing
whiskers
silicon nitride
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 - Fee Related
Application number
ES8902247A
Other languages
Spanish (es)
Inventor
Aleksander J Pyzik
William J Dubensky
Douglas B Schwarz
Donld R Beaman
Harold E Rossow
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to ES8902247A priority Critical patent/ES2013684A6/en
Publication of ES2013684A6 publication Critical patent/ES2013684A6/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

Process for producing a ceramic body from silicon nitride and a ceramic body produced in this way. The body is inherently reinforced and has a high resistance to fracture. A mixture of powders containing silicon nitride (Si3N4), magnesium and yttrium oxides and a compound which increases the growth of [beta]-Si3N4 whiskers, producing densification and forming [beta]-Si3N4 whiskers in situ is hot pressed. The new Si3N4 ceramic material which has high strength and fracture resistance comprises a crystalline phase of Si3N4 with >= 20% by volume in the form of whiskers which have an average aspect ratio >= 2.5 a second vitreous phase which contains a source of magnesium, a source of yttrium, a compound which increases the growth of [beta]-Si3N4 whiskers, and silica in a quantity <= 35% by weight and <= 10% by weight of other phases. Applications to ceramic parts subject to wear and high temperatures.
ES8902247A 1989-06-27 1989-06-27 Process for producing a ceramic body from silicon nitride and a ceramic body produced in this way Expired - Fee Related ES2013684A6 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES8902247A ES2013684A6 (en) 1989-06-27 1989-06-27 Process for producing a ceramic body from silicon nitride and a ceramic body produced in this way

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES8902247A ES2013684A6 (en) 1989-06-27 1989-06-27 Process for producing a ceramic body from silicon nitride and a ceramic body produced in this way

Publications (1)

Publication Number Publication Date
ES2013684A6 true ES2013684A6 (en) 1990-05-16

Family

ID=8262758

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8902247A Expired - Fee Related ES2013684A6 (en) 1989-06-27 1989-06-27 Process for producing a ceramic body from silicon nitride and a ceramic body produced in this way

Country Status (1)

Country Link
ES (1) ES2013684A6 (en)

Similar Documents

Publication Publication Date Title
TW217402B (en)
UKYO et al. High strength Si3N4 ceramics
WO1990015785A1 (en) Method of producing ceramic sinter
GB2063302A (en) Sintered silicon nitride
CA2016336A1 (en) Silicon nitride sintered bodies and method of manufacturing the same
US4552711A (en) Use of free silicon in liquid phase sintering of silicon nitrides and sialons
JPS6487551A (en) Sic-al2o3 composite sintered body and its production thereof
ES2013684A6 (en) Process for producing a ceramic body from silicon nitride and a ceramic body produced in this way
CA2025425A1 (en) Sintered ceramic composite body and method of manufacturing same
Briggs Pressureless sintering of sialon ceramics
US4487840A (en) Use of silicon in liquid sintered silicon nitrides and sialons
CA2025426A1 (en) Sintered ceramic composite body and method of manufacturing same
KR890005328B1 (en) Silicon nitride ceramics
KR100311694B1 (en) Preparation of porous sintered silicon oxynitride
SU1752522A1 (en) Method for preparation of composition powders on the base of refractory iron compounds with iron bundle
JPS6414167A (en) High-strength aluminum oxide-based sintered body and its production
GOGOTSI et al. The effect of the composition on the mechanical properties of a material based on silicon nitride(Vliianie sostava na mekhanicheskie svoistva materiala na osnove nitrida kremniia)
Kobayashi et al. STRENGTHENING OF Si 3 N 4 CERAMICS BY ZrO 2 ADDITION
EP0317147B1 (en) Si3n4-al2o3 composite sintered bodies and method of producing the same
Scafè et al. Mechanical Properties of Reaction Sintered Silicon-Silicon Carbide Composites
CA1189094A (en) Ceramic composition
Liu et al. BN/RBSN COMPOSITE MATERIALS
EP0241514A1 (en) Dense ceramics containing a solid solution and method for making the same
AU6332590A (en) In situ production of silicon carbide reinforced ceramic composites
Rogers Densified silicon nitride ceramics and their production

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990301