| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
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| Symposium
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Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
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| Presentation Title |
Carbon-Carbon Composite Materials from 3D Printed Preforms Graphitized by Electric Field Assisted Sintering |
| Author(s) |
Arin S. Preston, Jorgen Rufner, Joshua Kane, Troy Holland, Robert Fox, Blesson Isaac, Lu Cai, Kunal Mondal |
| On-Site Speaker (Planned) |
Arin S. Preston |
| Abstract Scope |
Formation of Carbon-Carbon (C-C) composite materials requires putting a carbon fiber preform through a cycle of densification, carbonization, and graphitization. In traditional furnaces this is quite time consuming as typical heating rates are low. C-C composites were formed by pyrolyzation of 3D-printed carbon fiber preforms, vacuum infiltration of naphthalene based mesophase pitch, and carbonization. The part was then graphitized in the Electric Field Assisted Sintering (EFAS) system. Graphitization of the composite matrix was achieved in less than an hour. A part density of over 1.6g/cc was achieved after two rounds of infiltration and a single graphitization. The process is significantly faster than traditional methods. SEM, XRD, and X-ray CT will be discussed to characterize the degree of graphitization, internal porosity, and evaluate the microstructure throughout the process. Mechanical testing of the part was performed showing the impact on fiber direction to strength of the final part. |