Improvement of Oxidation Resistance of Graphite Powder Treated with Phosphate

Abstract:

Article Preview

Graphite powder was treated with lanthanum, aluminum and magnesium phosphate solution, and oxidation resistance of the obtained graphite powder was evaluated. Oxidation starting temperature and oxidation completion temperature of graphite powder treated with various phosphates were 50-100oC higher than those of as-received graphite powder. Graphite powder treated with small amount of lanthanum phosphate exhibited the higher oxidation starting temperature than graphite powder treated with aluminum and magnesium phosphates. LaP5O14 would partially exited on graphite powder, and protect the edge carbon atoms of graphite and reduce the reactivity of carbon atoms toward oxygen, resulting in improving the oxidation resistance.

Info:

Periodical:

Edited by:

Katsutoshi Komeya, Yohtaro Matsuo and Takashi Goto

Pages:

133-136

DOI:

10.4028/www.scientific.net/KEM.352.133

Citation:

K. Yoshida et al., "Improvement of Oxidation Resistance of Graphite Powder Treated with Phosphate", Key Engineering Materials, Vol. 352, pp. 133-136, 2007

Online since:

August 2007

Export:

Price:

$35.00

[1] Q. Zhu, X. Qiu and C. Ma : Carbon Vol. 37 (1999), p.1475.

[2] O. Yamamoto, T. Sasamoto and M. Inagaki : J. Chem. Soc. Japan No. 10 (1991), p.1326.

[3] E. Yasuda, S. -M. Park, T. Akatsu and Y. Tanabe : J. Mater. Sci. Lett. Vol. 13 (1994), p.378.

[4] D.W. MacKee : Carbon Vol. 10 (1972), p.491.

[5] D.W. MacKee, C.L. Spiro and E.J. Lamby : Carbon Vol. 22 (1984), p.285.

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