Published December 1, 2019 | Version v1
Journal article Metadata-only

Preparation of highly-dense TiB2 ceramic with excellent mechanical properties by spark plasma sintering using hexagonal TiB2 plates

Creators

  • 1. Nano-Science and Technology Research Center, Shanghai University, Shanghai 200444 (China)
  • 2. School of Materials Science and Engineering, Shanghai University, Shanghai 200444 (China)
  • 3. School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418 (China)

Description

Highly-dense TiB2 ceramic with excellent mechanical properties including Vickers hardness of 24.2 GPa and fracture toughness of 7.3 MPa.m1/2 is fabricated by spark plasma sintering of hexagonal TiB2 plates. Compared with the commercial TiB2 powder, the TiB2 plate is verified to have satisfying sinterability as well as the potential in promoting the mechanical properties of TiB2 ceramics. The graphite and boron-rich carbide formed in situ at the grain boundary of TiB2, which has remarkable effects on promoting the stress releases in the crack tip and enhancing the resistance to crack propagation. (paper)

Availability note (English)

Available from http://dx.doi.org/10.1088/2053-1591/ab5829

Additional details

Identifiers

DOI
10.1088/2053-1591/ab5829;

Publishing Information

Journal Title
Materials Research Express (Online)
Journal Volume
6
Journal Issue
12
Journal Page Range
[8 p.]
ISSN
2053-1591

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
52014556
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BORON CARBIDES; CERAMICS; CRACK PROPAGATION; FRACTURE PROPERTIES; GRAIN BOUNDARIES; PLASMA; PLATES; SINTERING; TITANIUM BORIDES; VICKERS HARDNESS
Descriptors DEC
BORIDES; BORON COMPOUNDS; CARBIDES; CARBON COMPOUNDS; FABRICATION; MECHANICAL PROPERTIES; MICROSTRUCTURE; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS