Articles
  • Preparation and sinterability of submicron titanium carbide powders synthesized with phenolic resin as carbon source by carbothermal reduction

  • Huijuan Qiua, Hongkang Weia,*, Shifeng Renb, Lingjun Sunb, Jia Lia, Zihan Wangb, Lin Zhaoa, Chang-an Wangc and Zhipeng Xiec

  • aAdvanced Ceramic Materials Research Institute, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, People’s Republic of China
    bJingdezhen Huaxun Special Ceramics Company Limited, Jingdezhen, Jiangxi 333426, People’s Republic of China
    cState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Titanium carbide powders were synthesized under an argon atmosphere using titanium dioxide and pyrolysis carbon derived from pyrolyzed phenolic resin as raw materials. The effects of synthesis temperature, holding time, and C/Ti molar ratio on the phase composition and morphology of the synthesized powders were investigated. The results show that the pyrolyzed phenolic resin at 1000 ℃ is a carbon source composed of amorphous and crystalline carbon. Increasing the C/Ti molar ratio of the mixed powder can reduce the content of titanium oxide impurity, indicating the improvement in the purity of TiC powder. In addition, the C/Ti molar ratio can also significantly affect the morphology of the synthesized TiC powders. SEM and EDS results exhibit that the atomic content on the surface of TiC particles is closely correlated with the atomic distribution on the surface of the particles. TiC powder with a median particle size of 384 nm could be synthesized at 1500 ℃ for 30 min at the C/Ti molar ratio of 2.3:1. In addition, the sinterability of the synthesized TiC powder was preliminarily discussed. The hardness and fracture toughness of the TiC ceramic sintered at 2000 ℃ under 40 MPa with a dwell time of 2 h are 15.92 GPa and 3.22 MPa·m1/2, respectively.


Keywords: Titanium carbide powder, Phenolic resin, Pyrolysis carbon.

This Article

  • 2024; 25(2): 212-219

    Published on Apr 30, 2024

  • 10.36410/jcpr.2024.25.2.212
  • Received on Nov 16, 2023
  • Revised on Dec 8, 2023
  • Accepted on Dec 11, 2023

Correspondence to

  • Hongkang Wei

  • Advanced Ceramic Materials Research Institute, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, People’s Republic of China
    Tel /Fax: +86-798-8499678

  • E-mail: weihongkang@jcu.edu.cn