FR2367019A1 - Procede de fabrication de produits en nitrure de bore hexagonal - Google Patents
Procede de fabrication de produits en nitrure de bore hexagonalInfo
- Publication number
- FR2367019A1 FR2367019A1 FR7630497A FR7630497A FR2367019A1 FR 2367019 A1 FR2367019 A1 FR 2367019A1 FR 7630497 A FR7630497 A FR 7630497A FR 7630497 A FR7630497 A FR 7630497A FR 2367019 A1 FR2367019 A1 FR 2367019A1
- Authority
- FR
- France
- Prior art keywords
- boron nitride
- mixt
- compsn
- boric acid
- urea
- 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
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
- C04B35/583—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 boron nitride
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)
Abstract
Le procédé de fabrication de produits faisant l'objet de l'invention consiste en ce que la poudre fine de nitrure de bore hexagonal est prise en combinaison avec une composition à bas point de fusion contenant du bore et de l'azote, puis le mélange est comprimé à une température de 80 à 160 degrés C, sous une pression suffisante pour que la composition fondue pénètre dans les pores du demi-produit et les remplisse. De plus, avant la cuisson à haute température, le demi-produit obtenu est chauffé dans une atmosphère d'ammoniac jusqu'à une température de 1.000 à 1.400 degrés C. Les produits fabriqués par ce procédé trouveront des applications étendues dans divers domaines de la technique, comme matériaux à haut caractère réfractaire, isolants thermostables, diélectriques pour divers dispositifs électroniques, matériaux antifriction, etc
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7630497A FR2367019A1 (fr) | 1976-10-11 | 1976-10-11 | Procede de fabrication de produits en nitrure de bore hexagonal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7630497A FR2367019A1 (fr) | 1976-10-11 | 1976-10-11 | Procede de fabrication de produits en nitrure de bore hexagonal |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2367019A1 true FR2367019A1 (fr) | 1978-05-05 |
FR2367019B1 FR2367019B1 (fr) | 1979-02-23 |
Family
ID=9178585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7630497A Granted FR2367019A1 (fr) | 1976-10-11 | 1976-10-11 | Procede de fabrication de produits en nitrure de bore hexagonal |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2367019A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111377742A (zh) * | 2020-03-23 | 2020-07-07 | 河北工业大学 | 一种三维多孔六方氮化硼的无模板合成方法 |
-
1976
- 1976-10-11 FR FR7630497A patent/FR2367019A1/fr active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111377742A (zh) * | 2020-03-23 | 2020-07-07 | 河北工业大学 | 一种三维多孔六方氮化硼的无模板合成方法 |
CN111377742B (zh) * | 2020-03-23 | 2022-04-26 | 河北工业大学 | 一种三维多孔六方氮化硼的无模板合成方法 |
Also Published As
Publication number | Publication date |
---|---|
FR2367019B1 (fr) | 1979-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |