|
|
|
| Studies on Interface Diffusion Layer of Ti/Al Composite Electrode Substrate Materials |
| ZHANG Jin ZHU Peixian** DAI Jianqing ZHOU Shenggang CAO Yong |
| (Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093) |
|
Cite this article:
ZHANG Jin ZHU Peixian** DAI Jianqing ZHOU Shenggang CAO Yong. Studies on Interface Diffusion Layer of Ti/Al Composite Electrode Substrate Materials. Chinese Journal of Materials Research, 2013, 27(6): 597-604.
|
|
|
Abstract A comparative study of performance advantages was made between Ti/Al composite electrode and conventional Ti electrode. Ti/Al composite electrode was fabricated by hot-pressing diffusion compound method. And the microstructure and properties of the novel electrode substrate materials were investigated by SEM, EDS, four-probe method and electrochemical measurements. The results show that the single phase of TiAl3 formed in Ti/Al compound interface has stable structure and excellent electrical conductivity under the condition of 540℃ sintering temperature and 90min holding time. In this case, the composite electrode has the lowest interfacial resistance and the best electrochemical performance. In this paper first principles calculations were applied to study the formation enthalpy and binding energy of four kinds of Ti/Al intermetallic compounds. The order of formation enthalpy is as following: Ti3Al< TiAl< TiAl2< TiAl3; the order of binding energies is as following: Ti3Al< TiAl< TiAl2< TiAl3. The formation mechanism of single interface diffusion layer of TiAl3 was explained from the view of thermodynamics. And growth dynamics equation of interface diffusion layer is obtained by diffusion kinetics calculation.
|
|
|
|
|
| Fund: Supported by National Natural Science Foundation of China No.51264025 and the National High Technology Research and Development Program of China No.2009AA03Z512 |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
