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| Title: | Dispersion of Zirconium Diboride in an aqueous, high solids paste |
| Author (s): | Huang, Tieshu Hilmas, Greg Fahrenholtz, William G. Leu, Ming C. |
| Department/Lab Affiliations: | Materials Science & Engineering |
| Keywords: | Aqueous paste Dispersion High Solids Paste ZirconiumDiboride |
| Issue Date: | 2007 |
| Publisher: | Wiley/ Blackwell (Formerly Blackwell or Blackwell Synergy) |
| Citation: | Tieshu Huang, Gregory E. Hilmas, William G. Fahrenholtz, Ming C. Leu (2007) Dispersion of Zirconium Diboride in an Aqueous, High-Solids Paste International Journal of Applied Ceramic Technology 4 (5) , 470–479 doi:10.1111/j.1744-7402.2007.02157.x |
| Abstract: | The dispersion of ZrB2 particles was investigated. In aqueous systems, the surface of ZrB2 consists of a thin layer of ZrO2 that controls the surface chemistry and surface charge. Measurements showed that the ZrB2 had an isoelectric point of pH=4.7 and a maximum ζ potential of −50 mV at pH=9. The addition of a dispersant, either an ionic ammonium polyacrylate or a nonionic alkoxylated polyether, increased the ζ potential of ZrB2 by as much as 60 mV to −110 mV. Viscosity measurements were used to optimize dispersant concentrations. High-solids loading (~45 vol.% ZrB2) aqueous pastes were prepared with two different dispersants. The pastes had viscosities of 40–50 Pa·s which was acceptable for extrusion, and were used to fabricate three-dimensional components from ZrB2. |
| Type: | Article - Journal text |
| 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. Definitive version at blackwell-synergy.com. Pre-print: author can archive; Post-print: author can archive FULL COPYRIGHT INFORMATION: |
| Publisher URL: | |
| Link to this page: |
| title | Dispersion of Zirconium Diboride in an aqueous, high solids paste |
| contributor.author | Huang, Tieshu |
| contributor.author | Hilmas, Greg |
| contributor.author | Fahrenholtz, William G. |
| contributor.author | Leu, Ming C. |
| contributor.deptlab | Materials Science & Engineering |
| contributor.sponsor | Air Force Research Lab |
| subject | Aqueous paste |
| subject | Dispersion |
| subject | High Solids Paste |
| subject | ZirconiumDiboride |
| date.issued | 2007 |
| publisher | Wiley/ Blackwell (Formerly Blackwell or Blackwell Synergy) |
| identifier.citation | Tieshu Huang, Gregory E. Hilmas, William G. Fahrenholtz, Ming C. Leu (2007) Dispersion of Zirconium Diboride in an Aqueous, High-Solids Paste International Journal of Applied Ceramic Technology 4 (5) , 470–479 doi:10.1111/j.1744-7402.2007.02157.x |
| identifier.pub.URI | |
| description.abstract | The dispersion of ZrB2 particles was investigated. In aqueous systems, the surface of ZrB2 consists of a thin layer of ZrO2 that controls the surface chemistry and surface charge. Measurements showed that the ZrB2 had an isoelectric point of pH=4.7 and a maximum ζ potential of −50 mV at pH=9. The addition of a dispersant, either an ionic ammonium polyacrylate or a nonionic alkoxylated polyether, increased the ζ potential of ZrB2 by as much as 60 mV to −110 mV. Viscosity measurements were used to optimize dispersant concentrations. High-solids loading (~45 vol.% ZrB2) aqueous pastes were prepared with two different dispersants. The pastes had viscosities of 40–50 Pa·s which was acceptable for extrusion, and were used to fabricate three-dimensional components from ZrB2. |
| type | Article - Journal |
| type.DCMIType | text |
| type.status | Final version |
| 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. Definitive version at blackwell-synergy.com. |
| rights | Pre-print: author can archive; Post-print: author can archive |
| rights.URI | |
| rights.URI | |
| date.accessioned | 2007-04-11T17:00:48Z |
| date.available | 2008-04-08T18:44:14Z |
| identifier.persist.URI |