Preparation of Mn-Co-Ni mono-phase spinel oxide by oxidation of rock salt-type oxide
- 59 Downloads
Preparation of a mono-phase spinel from a ternary system Mn-Co-Ni oxide with a molar ratio of 3.0∶1.9∶1.1 was investigated. It was found that the oxidation profile of a rock salt-type oxide, which was formed at 1400 °C, was the most significant factor. As a result, the perfect mono-phase specimen was obtained by water quenching the rock salt-type oxide and then heat treating to oxidize it for more than 3 h at 1000°C.
KeywordsOxide Polymer Ternary System Spinel Oxide Oxidation Profile
- 1.T. Meguro, T. Sasamoto, T. Yokoyama, S. Yamada, Y. Abe and N. Torikai, J. Ceram. Soc. Jpn. 95 (1987) 307.Google Scholar
- 2.T. Meguro, T. Sasamoto, T. Yokoyama, K. Shiraishi, Y. Abe and N. Torikai, ibid. 96 (1988) 334.Google Scholar
- 5.T. Yokoyama, T. Meguro, T. Sasamoto, N. Hirai, Y. Abe and N. Torikai, ibid. 98 (1990) 610.Google Scholar
- 6.L. V. Azároff and M. J. Buerger, “The powder method in X-ray crystallography” (McGraw-Hill, New York, 1958) p. 181.Google Scholar