Scholarlink

<p>Incorporating MXenes as additives into polymeric ceramic precursors allows homogenous integration of these 2D carbides into ceramic matrices. In this study, Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> MXene flakes were functionalized using 3-(2-aminoethylamino)propyltrimethoxysilane (AEAPTMS) and stabilized in allyl-hydrido-polycarbosilane (SMP-10), a SiC polymeric precursor. Thermogravimetric analysis suggests the composites retain more residual mass (~ 2.45–4.21% mass loss) in the 1200–1400&#xa0;°C range, indicating enhanced ceramic yield for 2 wt% MXene addition. In-situ high temperature X-ray diffraction on SMP-10-derived SiC for the first time indicates faster but suppressed crystallization initiation in MXene-incorporated SiC. Microstructural characterizations indicate formation of a &lt; 20&#xa0;nm thick Ti-Si-C interfacial nanostructure between distinct SiC and MXene-derived TiC<sub><i>y</i></sub> phases, with greater defect accumulations at the grain interfaces. These findings are the first step towards realizing the potential of 2D MXenes as additives in polymer-derived ceramics (PDCs) for advanced engineering applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Understanding phase and microstructure evolution of Ti3C2Tx MXene-polymer derived silicon carbide

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月22日

查看全文
  • Srinivasa Kartik Nemani,
  • Kaustubh K. Bawane,
  • Brian C. Wyatt,
  • Mubina Shaik,
  • Apurba Naskar,
  • Babak Anasori,
  • Kathy Lu

摘要

Incorporating MXenes as additives into polymeric ceramic precursors allows homogenous integration of these 2D carbides into ceramic matrices. In this study, Ti3C2Tx MXene flakes were functionalized using 3-(2-aminoethylamino)propyltrimethoxysilane (AEAPTMS) and stabilized in allyl-hydrido-polycarbosilane (SMP-10), a SiC polymeric precursor. Thermogravimetric analysis suggests the composites retain more residual mass (~ 2.45–4.21% mass loss) in the 1200–1400 °C range, indicating enhanced ceramic yield for 2 wt% MXene addition. In-situ high temperature X-ray diffraction on SMP-10-derived SiC for the first time indicates faster but suppressed crystallization initiation in MXene-incorporated SiC. Microstructural characterizations indicate formation of a < 20 nm thick Ti-Si-C interfacial nanostructure between distinct SiC and MXene-derived TiCy phases, with greater defect accumulations at the grain interfaces. These findings are the first step towards realizing the potential of 2D MXenes as additives in polymer-derived ceramics (PDCs) for advanced engineering applications.