About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
Presentation Title |
Phase Formation and High Temperature Electrical Conductivity in Polymer-Derived Silicon Oxycarbide – Ti3C2Tx ‘MXene’ Nanocomposites |
Author(s) |
Advaith V. Rau, Kathy Lu |
On-Site Speaker (Planned) |
Advaith V. Rau |
Abstract Scope |
Two-dimensional Ti3C2Tx (MXene) nanomaterials have gained popularity for their exceptional electrical conductivity as a potential material in electrodes and sensors. However, wider application in bulk composites is precluded by low exfoliated Ti3C2Tx yield and surface chemistry constraints. The MXene nanosheets are attractive filler materials in polymer-derived ceramic (PDC) systems due to the inherent compatibility of the ceramic matrix and Ti3C2Tx, which can significantly increase the electrical conductivity. In this work, Ti3C2Tx nanosheets were exfoliated and twice-functionalized to promote dispersion in the preceramic green body. The effect of Ti3C2Tx content (1/2/5 wt%) on phase evolution and electrical conductivity of Ti3C2Tx-SiOC ceramic nanocomposites were investigated from 900 to 1400°C. SiOC-¬Ti3C2Tx ceramic nanocomposites have potential in high temperature electrical and aerospace applications that leverage the structural and chemical stability of the ceramic constituents. |