About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Manufacturing and Processing of Advanced Ceramic Materials
|
Presentation Title |
Development of Textured UHTC Borides Using Extremely Low Magnetic Fields |
Author(s) |
Juan Diego Shiraishi Lombard, Ben Dillinger, Carolina Tallon |
On-Site Speaker (Planned) |
Juan Diego Shiraishi Lombard |
Abstract Scope |
Textured Ultra-High Temperature Ceramics have the potential for enhanced mechanical and thermal performance in extreme environments. Our previous analytical calculations predicted texture formation in UHTC borides using weak magnetic fields, which we validated experimentally by applying magnetic field as low as 0.55 T to various UHTC suspensions during slip casting to realize strong c-axis texture. In this work, we investigated the role of colloidal processing parameters, including solid content, dispersant concentration, and magnetic exposure, in texture development of ZrB2 and TiB2. We dicuss the interplay of interparticle, capillary, and magnetic forces through comparative study of casting and sedimentation by characterizing green bodies and supernatant and sediments. We also conducted initial thermal and mechanical characterization. The results give us new insight into the relationship between colloidal processing parameters and our analytical model of magnetically assisted slip casting, and the potential application to develop new microstructures and architectures with enhanced thermomechanical response. |