Journal
CERAMICS INTERNATIONAL
Volume 48, Issue 20, Pages 30418-30429Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.06.319
Keywords
TiC; Fe composites; Carbon source; Molar ratio; Mechanical performance
Categories
Funding
- National Natural Science Foundation of China [51971101]
- Industrial Technology Research and Devel-opment of Jilin Development and Reform Commission, China
- Guangdong Basic and Applied Basic Research Foundation, China [2019A1515110268]
- Graduate Innovation Fund of Jilin University [S202210183231]
Ask authors/readers for more resources
This work investigates the influence of carbon source and molar ratio in the Fe-Ti-C system on the size, distribution, and morphology of TiC particles in TiC/Fe composites. The results show that the size of TiC particles decreases with increasing Fe content, and the shape changes from spherical to cubic. Different carbon sources and molar ratios also lead to variations in the mechanical properties of the composites.
The size, distribution, and morphology of TiC particle in Fe-Ti-C system have a great influence on the me-chanical properties of TiC/Fe composites. In this work, TiC/Fe composites were fabricated in the Fe-Ti-C system with different carbon source and molar ratio by combustion synthesis and hot-pressing method. Morphology and size of ceramic particles, as well as microstructure, interface bonding and mechanical properties of composites were compared. The results showed that the size of TiC particles decreased with increase of Fe content of Fe-Ti-C systems fabricated by the same carbon source, while the particles change from spherical shapes to cubic shapes which can reduce stress concentration between ceramic particles and matrix. Furthermore, TiC/Fe composites fabricated by 5Fe-Ti-carbon blacks (CBs) system exhibited superior yield strength (1523 MPa) compressive strength (2203 MPa) and microhardness (691.5 HV), caused by the high interface bonding strength and lamellar pearlite matrix which can commendably limit the dislocation slip. By comparison, TiC/Fe composites fabricated by 21Fe-Ti-carbon nanotubes (CNTs) system showed higher fracture strain (25.85%) on account of the ferrite matrix with favorable plastic. This work reveals the influence of carbon source and molar ratio of Fe-Ti-C system on TiC/Fe composites, which is helpful to further improve the properties of TiC/Fe composites.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available