Design and preparation of continuous titanium carbide fibers via simple precursor route. Issue 16 (November 2020)

• Record Type: Journal Article
• Authors: Yu, Lei; Ji, Wangjin; Zhang, Shiwen; Song, Yun; Liu, Hui; Wang, Zhefei; Liu, Quan; Wang, Xuhong
• Is Part Of: Ceramics international. Volume 46:Issue 16(2020)Part A
• Page Start: 25485
• Page End: 25492
• Publication Date: 2020-11
• Subjects: Titanium carbide -- Ceramic fiber -- Ti-containing precursor -- Electrospinning; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.07.019
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Titanium carbide ( TiC) fibers are attractive functional materials that find application in the areas of energy, environment, and biology. Herein, a simple precursor route is designed to prepare TiC fibers by means of electrospinning. The precursor is prepared by adding polyvinylpyrrolidone (PVP) to as-synthesized polytitanoxane (PTO), and the synthesis process, structure, and thermal behavior of the resulting TiC fibers are analyzed. Smooth and continuous precursor fibers with a uniform diameter of ~1.22 μm are obtained after the electrospinning of the precursor. With increase in the preparation temperature, the phase composition of the fibers evolves into TiC from TiC x O y via pyrolysis and carbothermal reduction. Chemical-state analysis results show that the surface of as-prepared TiC fibers exhibits very weak oxidation, thus leading to TiO2 and TiC x O y formation. In addition, all the prepared fibers show uniform morphologies without adhesion. With the proposed approach, continuous TiC fibers with a diameter of ~0.55 μm can be obtained.