Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade
The fabrication process of integral ceramic mold based on stereolithography and gelcasting can eliminate the assembly errors between cores and that between cores and shell in the traditional manufacturing process of ceramic molds. However, the bending strength of the mold at 500°C (mid-temperature s...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2016
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| Online Access: | https://hdl.handle.net/10356/84570 http://hdl.handle.net/10220/41850 |
| _version_ | 1811686952502558720 |
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| author | Tian, Guoqiang Li, Dichen Lu, Zhongliang Wan, Weijian Miao, Kai |
| author2 | Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) |
| author_facet | Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) Tian, Guoqiang Li, Dichen Lu, Zhongliang Wan, Weijian Miao, Kai |
| author_sort | Tian, Guoqiang |
| collection | NTU |
| description | The fabrication process of integral ceramic mold based on stereolithography and gelcasting can eliminate the assembly errors between cores and that between cores and shell in the traditional manufacturing process of ceramic molds. However, the bending strength of the mold at 500°C (mid-temperature strength) drops significantly during pre-sintering because the gel networks surrounded the ceramic particles are burnt off, which often causes the core fracture or shell cracking of the integral ceramic mold. In this paper, short alumina-based fibers were added into the gelcast ceramic slurry to improve the mid-temperature of the ceramic mold. Filling experiment and computed tomography (CT) test were performed to investigate the effect of fiber content and fiber length on the filling ability of ceramic slurry in the cavity with small complex structures. The mid-temperature strengths of the ceramic mold were tested. Microstructures of the ceramic mold sintered at 500°C were observed by scanning electron microscope (SEM). It was found that the filling ability of the ceramic slurry decreased as the fiber length and fiber content increased, however the mid-temperature strength of the ceramic mold increased with the fiber length and fiber content. When 1.5wt% short alumina-based fibers with lengths between 0.5 mm and 1 mm were added, the ceramic slurry could meet the requirement of gelcasting, and the midtemperature strength of the ceramic mold was improved from 0.78 MPa to 1.65 MPa. |
| first_indexed | 2024-10-01T05:08:35Z |
| format | Conference Paper |
| id | ntu-10356/84570 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:08:35Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/845702020-09-24T20:12:21Z Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade Tian, Guoqiang Li, Dichen Lu, Zhongliang Wan, Weijian Miao, Kai Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) Singapore Centre for 3D Printing The fabrication process of integral ceramic mold based on stereolithography and gelcasting can eliminate the assembly errors between cores and that between cores and shell in the traditional manufacturing process of ceramic molds. However, the bending strength of the mold at 500°C (mid-temperature strength) drops significantly during pre-sintering because the gel networks surrounded the ceramic particles are burnt off, which often causes the core fracture or shell cracking of the integral ceramic mold. In this paper, short alumina-based fibers were added into the gelcast ceramic slurry to improve the mid-temperature of the ceramic mold. Filling experiment and computed tomography (CT) test were performed to investigate the effect of fiber content and fiber length on the filling ability of ceramic slurry in the cavity with small complex structures. The mid-temperature strengths of the ceramic mold were tested. Microstructures of the ceramic mold sintered at 500°C were observed by scanning electron microscope (SEM). It was found that the filling ability of the ceramic slurry decreased as the fiber length and fiber content increased, however the mid-temperature strength of the ceramic mold increased with the fiber length and fiber content. When 1.5wt% short alumina-based fibers with lengths between 0.5 mm and 1 mm were added, the ceramic slurry could meet the requirement of gelcasting, and the midtemperature strength of the ceramic mold was improved from 0.78 MPa to 1.65 MPa. Published version 2016-12-13T09:12:55Z 2019-12-06T15:47:27Z 2016-12-13T09:12:55Z 2019-12-06T15:47:27Z 2016 Conference Paper Tian, G., Lu, Z., Wan, W., Miao, K., & Li, D. (2016). Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade. Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016), 73-78. https://hdl.handle.net/10356/84570 http://hdl.handle.net/10220/41850 en © 2016 by Pro-AM 2016 Organizers. Published by Research Publishing, Singapore 6 p. application/pdf |
| spellingShingle | Tian, Guoqiang Li, Dichen Lu, Zhongliang Wan, Weijian Miao, Kai Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade |
| title | Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade |
| title_full | Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade |
| title_fullStr | Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade |
| title_full_unstemmed | Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade |
| title_short | Effect Of Alumina-based Fiber On The Mid-temperature Strength Of Integral Ceramic Mold For Casting Hollow Turbine Blade |
| title_sort | effect of alumina based fiber on the mid temperature strength of integral ceramic mold for casting hollow turbine blade |
| url | https://hdl.handle.net/10356/84570 http://hdl.handle.net/10220/41850 |
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