Oxidation of TiAl, Ni and Fe in a dynamic environmental SEM--颗粒学报PARTICUOLOGY

Shao, M., & Kwauk, M. (2004). Oxidation of TiAl, Ni and Fe in a dynamic environmental SEM. China Particuology, 2(1), 31-36. https://doi.org/10.1016/S1672-2515(07)60017-7

Oxidation of TiAl, Ni and Fe in a dynamic environmental SEM

Manjun Shao ^*, Mooson Kwauk

Key Laboratory of Multi-phase Reaction, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, P. R. China

10.1016/S1672-2515(07)60017-7

Volume 2, Issue 1, February 2004, Pages 31-36

Received 10 October 2003, Accepted 31 December 2003, Available online 27 November 2007.

E-mail: mjshao@hotmail.com

Highlights

Abstract

A Dynamic Environmental Scanning Electron Microscope (DESEM) was developed in this laboratory for in situ monitoring of the morphology of metal surface during oxidation. The process of nucleation and growth of oxide grains/whiskers on Fe, Ni and TiAl during oxidation were successfully observed and recorded continuously by using our KYKY1500 ESEM. The experiments were carried out under different conditions of oxidation: temperature in the range of 500∼750 °C and oxygen partial pressure in the range of 10⁻⁴∼45 Pa. In the light of the observed surface morphology and microstructure during the oxidation, the growth mechanism and reaction kinetics were discussed.

Graphical abstract

Keywords

oxidation; metal; dynamic scanning electron microscope

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