Scholars' Mine
Missouri S&T
Research Repository
Curtis Laws Wilson Library
400 W. 14th Street
Rolla, MO 65409-0060
scholarsmine@mst.edu
| Title: | Effect of hot pressing time and temperature on the microstructure and mechanical properties of ZrB2-SiC |
| Author (s): | Rezaie, A. Fahrenholtz, William G. Hilmas, Greg |
| Department/Lab Affiliations: | Materials Science & Engineering |
| Keywords: | Microstructure and Mechanical Properties ZrB2-SiC |
| Issue Date: | 2007 |
| Publisher: | Springer Verlag |
| Citation: | A. Rezaie, W.G. Fahrenholtz, and G.E. Hilmas, “Effect of Hot Pressing Time and Temperature on the Microstructure and Mechanical Properties of ZrB2-SiC,” Journal of Materials Science, 42(8) 2735-2752 (2007). |
| Abstract: | Structure-property relations were examined for ZrB2 containing 30 volume percent SiC particulates. Two grades of ZrB2 with initial particle sizes of 2 and 6 mu m were used. Billets of ZrB2-SiCwere produced by hot pressing at 1850, 1950 or 2050 degrees C for 45 min. In addition, the material prepared from ZrB2 with an initial particle size of 2 mu m was hot pressed at 2050 degrees C for 90 and 180 min. Microstructures and mechanical properties were characterized to determine the effects of the initial particle size, hot pressing time, and hot pressing temperature on the final grain size and morphology. The average grain size of the ZrB2 phase ranged from 2.2 to 4.7 mu m. Similarly, the average grain size of the SiC phase ranged from 1.2 to 2.7 mu m. Hardness and modulus of elasticity were not affected by the processing conditions with average values of 22 and 505 GPa, respectively. However, flexural strength decreased as grain size increased from a maximum of similar to 1050 MPa for the finest grain sizes to similar to 700 MPa for the largest grain sizes. Analysis suggested that the strength of ZrB2-SiC was limited by the size of the SiC inclusions in the ZrB2 matrix. |
| Type: | Article - Journal text |
| In Title: | Journal of Materials Science |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: |
| Link to this page: |
| title | Effect of hot pressing time and temperature on the microstructure and mechanical properties of ZrB2-SiC |
| contributor.author | Rezaie, A. |
| contributor.author | Fahrenholtz, William G. |
| contributor.author | Hilmas, Greg |
| contributor.deptlab | Materials Science & Engineering |
| subject | Microstructure and Mechanical Properties |
| subject | ZrB2-SiC |
| date.issued | 2007 |
| publisher | Springer Verlag |
| identifier.citation | A. Rezaie, W.G. Fahrenholtz, and G.E. Hilmas, “Effect of Hot Pressing Time and Temperature on the Microstructure and Mechanical Properties of ZrB2-SiC,” Journal of Materials Science, 42(8) 2735-2752 (2007). |
| description.abstract | Structure-property relations were examined for ZrB2 containing 30 volume percent SiC particulates. Two grades of ZrB2 with initial particle sizes of 2 and 6 mu m were used. Billets of ZrB2-SiCwere produced by hot pressing at 1850, 1950 or 2050 degrees C for 45 min. In addition, the material prepared from ZrB2 with an initial particle size of 2 mu m was hot pressed at 2050 degrees C for 90 and 180 min. Microstructures and mechanical properties were characterized to determine the effects of the initial particle size, hot pressing time, and hot pressing temperature on the final grain size and morphology. The average grain size of the ZrB2 phase ranged from 2.2 to 4.7 mu m. Similarly, the average grain size of the SiC phase ranged from 1.2 to 2.7 mu m. Hardness and modulus of elasticity were not affected by the processing conditions with average values of 22 and 505 GPa, respectively. However, flexural strength decreased as grain size increased from a maximum of similar to 1050 MPa for the finest grain sizes to similar to 700 MPa for the largest grain sizes. Analysis suggested that the strength of ZrB2-SiC was limited by the size of the SiC inclusions in the ZrB2 matrix. |
| type | Article - Journal |
| type.DCMIType | text |
| type.status | Postprint |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights.URI | |
| relation.isPartOf | Journal of Materials Science |
| date.accessioned | 2007-04-11T17:00:48Z |
| date.available | 2008-04-14T20:15:02Z |
| identifier.persist.URI |