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 wayInfo
- 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
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.
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) |
-
1989
- 1989-06-27 ES ES8902247A patent/ES2013684A6/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19990301 |