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| Title: | Selective laser sintering of high-density alumina ceramic parts |
| Author (s): | Liu, Z. H. Nolte, J. J. Packard, J. I. Hilmas, Greg Dogan, Fatih Leu, Ming C. |
| Department/Lab Affiliations: | Energy Research and Development Center Intelligent Systems Center Materials Research Center Materials Science & Engineering Mechanical & Aerospace Engineering University Transportation Center Virtual Reality & Rapid Prototyping Lab |
| Keywords: | 3D geometry alumina ceramic parts process parameter tuning selective laser sintering |
| Issue Date: | 2007-06-30 |
| Publisher: | Springer Verlag |
| Citation: | Liu, Z.H., Nolte, J.J., Packard, J.I., Hilmas, Gregory, Dogan, Fatih, and Leu, Ming C. "Selective Laser Sintering of High-Density Alumina Ceramic Parts.", Proceedings of the 35th International MATADOR Conference, pp.351-354, 2007. |
| Abstract: | Manufacturing high temperature ceramic parts with Solid Freeform Fabrication (SFF) technology has been of great research interest lately. Described in this paper is a process based on Selective Laser Sintering (SLS) to fabricate 3-dimensional alumina green parts layer-by-layer, followed by binder burnout and sintering to obtain high-density ceramic parts. This SLS process has been developed to manufacture 3D parts including airplane models, letter bars, etc. from mixtures of alumina powder and stearic acid binder. These mixtures were generated by mixing alumina powder with stearic acid in a ball mill. The average particle size of the alumina particles is 0.26 µm. The SLS process parameters were tuned such that the green parts can be built with reasonably sharp geometrical features and that the sintered parts have good mechanical and physical properties. Proper binder burnout conditions were determined in order that the resultant parts after the binder burnout process have no visible cracks. Alumina ceramic parts were obtained by firing the green parts at 1600°C. The alumina ceramic bars achieved 255 MPa in flexural strength, and the bar relative density achieved is 88%. These results are discussed. |
| Type: | Article - Conference proceedings text |
| In Title: | Proceedings of the 35th International MATADOR Conference |
| 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. Pre-print: author can archive; Post-print: author can archive; FULL COPYRIGHT INFORMATION: |
| Publisher URL: | |
| Link to this page: |
| title | Selective laser sintering of high-density alumina ceramic parts |
| contributor.author | Liu, Z. H. |
| contributor.author | Nolte, J. J. |
| contributor.author | Packard, J. I. |
| contributor.author | Hilmas, Greg |
| contributor.author | Dogan, Fatih |
| contributor.author | Leu, Ming C. |
| contributor.deptlab | Energy Research and Development Center |
| contributor.deptlab | Intelligent Systems Center |
| contributor.deptlab | Materials Research Center |
| contributor.deptlab | Materials Science & Engineering |
| contributor.deptlab | Mechanical & Aerospace Engineering |
| contributor.deptlab | University Transportation Center |
| contributor.deptlab | Virtual Reality & Rapid Prototyping Lab |
| subject | 3D geometry |
| subject | alumina ceramic parts |
| subject | process parameter tuning |
| subject | selective laser sintering |
| date.issued | 2007-06-30 |
| publisher | Springer Verlag |
| identifier.citation | Liu, Z.H., Nolte, J.J., Packard, J.I., Hilmas, Gregory, Dogan, Fatih, and Leu, Ming C. "Selective Laser Sintering of High-Density Alumina Ceramic Parts.", Proceedings of the 35th International MATADOR Conference, pp.351-354, 2007. |
| identifier.pub.URI | |
| description.abstract | Manufacturing high temperature ceramic parts with Solid Freeform Fabrication (SFF) technology has been of great research interest lately. Described in this paper is a process based on Selective Laser Sintering (SLS) to fabricate 3-dimensional alumina green parts layer-by-layer, followed by binder burnout and sintering to obtain high-density ceramic parts. This SLS process has been developed to manufacture 3D parts including airplane models, letter bars, etc. from mixtures of alumina powder and stearic acid binder. These mixtures were generated by mixing alumina powder with stearic acid in a ball mill. The average particle size of the alumina particles is 0.26 µm. The SLS process parameters were tuned such that the green parts can be built with reasonably sharp geometrical features and that the sintered parts have good mechanical and physical properties. Proper binder burnout conditions were determined in order that the resultant parts after the binder burnout process have no visible cracks. Alumina ceramic parts were obtained by firing the green parts at 1600°C. The alumina ceramic bars achieved 255 MPa in flexural strength, and the bar relative density achieved is 88%. These results are discussed. |
| type | Article - Conference proceedings |
| type.DCMIType | text |
| 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 | Pre-print: author can archive; Post-print: author can archive; |
| rights.URI | |
| rights.URI | |
| relation.isPartOf | Proceedings of the 35th International MATADOR Conference |
| date.available | 2008-08-08T14:14:17Z |
| identifier.persist.URI |