Imperial College London
Alternate

Professor WE (Bill) Lee FREng

Faculty of Engineering, Institute for Security Science & Technology

Distinguished Research Fellow
 
 
 
//

Contact

 

w.e.lee Website

 
 
//

Assistant

 

Miss Eva Konstantara +44 (0)20 7594 8864

 
//

Location

 

Abdus Salam LibrarySouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Jayaseelan:2021:10.1016/j.jeurceramsoc.2021.12.035,
author = {Jayaseelan, DD and Pramana, S and Grasso, S and Bai, Y and Skinner, S and Reece, MJ and Lee, WE},
doi = {10.1016/j.jeurceramsoc.2021.12.035},
journal = {Journal of the European Ceramic Society},
pages = {1292--1301},
title = {Fabrication and characterisation of single-phase Hf2Al4C5 ceramics},
url = {http://dx.doi.org/10.1016/j.jeurceramsoc.2021.12.035},
volume = {42},
year = {2021}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Single-phase Hf2Al4C5 ternary carbide was fabricated from Hf/Al/C powder mixtures by pressure assisted sintering techniques such as hot pressing and spark plasma sintering at 1900 °C for 3 h and 10 min, respectively. XRD confirmed that the ternary carbide started to form at temperatures as low as 1500 °C and with total formation of Hf2Al4C5 after reactive sintering for 1 h at 1900 °C. It is evident from HRTEM that two Hf-C layers were sandwiched with 4 Al-C layers (Al4C3) in the Hf2Al4C5 ternary carbide. Tight interlocking of grains, faceted grains and stacking faults were occasionally observed. Thermal conductivity of Hf2Al4C5 is measured to be 14 w m−1k−1 from room temperature to 1300 °C. The oxidation studies carried out at 1300 °C for 3 h reveal that the oxidation layer thickness is around 220 μm and it contains microcracks closer to sample surface whereas the interface looks seamless without any cracking or spallation of the oxide layer.
AU  - Jayaseelan,DD
AU  - Pramana,S
AU  - Grasso,S
AU  - Bai,Y
AU  - Skinner,S
AU  - Reece,MJ
AU  - Lee,WE
DO  - 10.1016/j.jeurceramsoc.2021.12.035
EP  - 1301
PY  - 2021///
SN  - 0955-2219
SP  - 1292
TI  - Fabrication and characterisation of single-phase Hf2Al4C5 ceramics
T2  - Journal of the European Ceramic Society
UR  - http://dx.doi.org/10.1016/j.jeurceramsoc.2021.12.035
UR  - https://www.sciencedirect.com/science/article/pii/S0955221921009298?via%3Dihub
UR  - http://hdl.handle.net/10044/1/93431
VL  - 42
ER  -
Download