Electronic Binding Energy Changes of Elements in Al2O3-MgAlON Composite during the Crack Healing Process

Abstract:

Article Preview

Using Al, MgO and Al2O3 as raw materials, Al2O3-MgAlON composite was synthesized in N2 atmosphere by hot-press sintering at 900°C. Cracks prepared on the sample surface were healed at 1200°C×6hrs. Phase composition and element chemical state of sample were studied before and after healing. The results showed that: after healing process Al and MgO phase disappeare, and AlN and MgAlON phase appear, all kinds of elements in Al2O3-MgAlON material change their chemical state after the healing treatment, the changed electronic binding energy is Al 0.05ev, Mg 0.08ev, O 2.58ev or N 1.02ev respectively, and the chemical composition and crystal structure of MgAlON phase also change, all these change are helpful for crack healing process of Al2O3-MgAlON material.

Info:

Periodical:

Advanced Materials Research (Volumes 287-290)

Edited by:

Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li

Pages:

205-208

DOI:

10.4028/www.scientific.net/AMR.287-290.205

Citation:

D. Y. Yang et al., "Electronic Binding Energy Changes of Elements in Al2O3-MgAlON Composite during the Crack Healing Process", Advanced Materials Research, Vols. 287-290, pp. 205-208, 2011

Online since:

July 2011

Export:

Price:

$35.00

[1] D. Yang, K. Zhu, J, Wu, et al: China's Refractories, Vol. 42 (2008), pp.349-353.

[2] D. Yang, K. Zhu, J, Wu, et al: China's Refractories, Vol. 43 (2009), pp.31-34.

[3] D. Yang: Ph.D. Thesis, University of Science and Technology Beijing, Beijing, China, (2004).

[4] X. Wang: Ph.D. Thesis, University of Science and Technology Beijing, Beijing, China, (2002).

[5] X. Guo: M.E. Thesis, Zhengzhou University, Zhengzhou, China, (2004).

[6] H. Li: M.E. Thesis, Wuhan University of Science and Technology, Wuhan, China, (2002).

In order to see related information, you need to Login.