JPS643083A - Porous material of silicon carbide and production thereof - Google Patents
Porous material of silicon carbide and production thereofInfo
- Publication number
- JPS643083A JPS643083A JP15752187A JP15752187A JPS643083A JP S643083 A JPS643083 A JP S643083A JP 15752187 A JP15752187 A JP 15752187A JP 15752187 A JP15752187 A JP 15752187A JP S643083 A JPS643083 A JP S643083A
- Authority
- JP
- Japan
- Prior art keywords
- silicon carbide
- layer part
- porous material
- treated
- molded article
- 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.)
- Pending
Links
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
PURPOSE: To produce a porous material of silicon carbide having high strength and high porosity, by constituting an inner layer part of entangled silicon carbide whiskers and a superficial layer part of granular silicon carbide.
CONSTITUTION: Silicon carbide whiskers (about 0.1W1.0μ diameter and about 30W100μ length) is uniformly dispersed into a dispersion medium to give a molded article having desired voids. The molded article is impregnated with a thermosetting polymer and heated at 800W1,200°C in a nonoxidizing atmosphere to burn and carbonize the thermosetting polymer. Then the resulting material is heat-treated in an oxidizing atmosphere at ≤800°C, carbon dispersing on the superficial layer part of the molded article is burnt and removed, the resulting material is heat-treated in a nonoxidizing atmosphere at 1,800W2,200°C, the whiskers on the superficial layer part are converted into a granular state to form a high-strength superficial part 1 and to maintain an inner layer part 2 in a whisker state. Further the resultant material is heat-treated in an oxidizing atmosphere at ≤800°C for a proper time to burn and to remove free carbon remaining in the porous material. Consequently, a porous material of silicon carbide suitable for filters for various filtrations is obtained.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15752187A JPS643083A (en) | 1987-06-26 | 1987-06-26 | Porous material of silicon carbide and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15752187A JPS643083A (en) | 1987-06-26 | 1987-06-26 | Porous material of silicon carbide and production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH013083A JPH013083A (en) | 1989-01-06 |
| JPS643083A true JPS643083A (en) | 1989-01-06 |
Family
ID=15651490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15752187A Pending JPS643083A (en) | 1987-06-26 | 1987-06-26 | Porous material of silicon carbide and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643083A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7572106B2 (en) | 2004-03-09 | 2009-08-11 | Tokyo Kikai Seisakusho, Ltd. | Ink pumping apparatus for printing press and ink leak preventing method |
-
1987
- 1987-06-26 JP JP15752187A patent/JPS643083A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7572106B2 (en) | 2004-03-09 | 2009-08-11 | Tokyo Kikai Seisakusho, Ltd. | Ink pumping apparatus for printing press and ink leak preventing method |
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