| Title: |
In-situ Formation of Reinforcement Phases in Ultra High Temperature Ceramic Composites |
| Authors: |
Johnson, Sylvia M; Hamby, Ian W.; Olson, Michael W; Stackpoole, Margaret M; Gasch, Matthew J |
| Source: |
CASI |
| Publication Year: |
2013 |
| Collection: |
NASA Technical Reports Server (NTRS) |
| Subject Terms: |
Metals and Metallic Materials |
| Subject Geographic: |
Unclassified; Unlimited; Publicly available |
| Description: |
A tough ultra-high temperature ceramic (UHTC) composite comprises grains of UHTC matrix material, such as HfB.sub.2, ZrB.sub.2 or other metal boride, carbide, nitride, etc., surrounded by a uniform distribution of acicular high aspect ratio reinforcement ceramic rods or whiskers, such as of SiC, is formed from uniformly mixing a powder of the UHTC material and a pre-ceramic polymer selected to form the desired reinforcement species, then thermally consolidating the mixture by hot pressing. The acicular reinforcement rods may make up from 5 to 30 vol % of the resulting microstructure. |
| Document Type: |
other/unknown material |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
Document ID: 20140001867; http://hdl.handle.net/2060/20140001867 |
| Availability: |
http://hdl.handle.net/2060/20140001867 |
| Rights: |
No Copyright |
| Accession Number: |
edsbas.40FA4FA4 |
| Database: |
BASE |