Claims
- 1. A composition, comprising:
- calcium aluminate cement;
- ceramic aggregate granules;
- toughness enhancing materials selected from the group consisting of ceramic materials, metal reinforcing screen, graphite fibers, and alumina fibers; and
- pore forming additives in the form of organic fibers or powders which disintegrate to leave voids in a mixture of said calcium aluminate cement, said ceramic aggregate granules, and said toughness enhancing materials.
- 2. A composition as recited in claim 1 wherein said pore forming additives are selected from the group consisting of polyethylene, polypropylene, polyester, sawdust, and naphthalene.
- 3. A composition as recited in claim 1 further comprising a sintering agent.
- 4. A composition as recited in claim 3 wherein said sintering agent is zinc oxide.
- 5. A composition, comprising:
- 21-23% calcium aluminate cement;
- 63-66% ceramic aggregate granules;
- 0.12-0.67% toughness enhancing materials selected from the group consisting of ceramic materials, metal reinforcing screen, graphite fibers, and alumina fibers; and
- 8.92-10.2% pore forming additives in the form of organic fibers or powders which disintegrate to leave voids in a mixture of said calcium aluminate cement, said ceramic aggregate granules, and said toughness enhancing materials.
Parent Case Info
This application is a division of co-pending application Ser. No. 07/676,813, filed on Mar. 28, 1991, now U.S. Pat. No. 5,087,277.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
4946487 |
Aug 1990 |
DEX |
246921 |
Jun 1987 |
DDX |
0190276 |
Oct 1984 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
676813 |
Mar 1991 |
|