Characteristics of a Fe-Co Alloy-Dispersed Al2O3 Nanocomposite Powder Synthesized by a Solution Chemistry Route

• Published in: Korean Journal of Metals and Materials Vol. 51; no. 2; pp. 101 - 104
• Main Authors: Oh, Sung-Tag, Riu, Doh-Hyung, Jeong, Young-Keun, Suk, Myung-Jin
• Format: Journal Article
• Language: English
• Published: 대한금속·재료학회 01.02.2013
• Subjects: 재료공학
• ISSN: 1738-8228; 2288-8241
• DOI: 10.3365/KJMM.2013.51.2.101

An optimum route to synthesize a Fe-Co alloy-dispersed Al2O3 nanocomposite powders and their magnetic properties were investigated. Nanocomposite powders of Al2O3 and Fe-Co alloys were prepared by the solution chemistry method using Al2O3 and metal nitrates powders. Al2O3/Fe-Co alloy powders were sythesized by calcination at 350℃ and hydrogen reduction at 700℃ of Al2O3, Fe- and Ninitrate powders. Microstructural analysis for the nanocomposite powders synthesized by ball milling and a hydrogen reduction process showed that the Fe-Co alloy particles with an average size of 20 nm were well distributed on the surface of the Al2O3 powders. The ferromagnetism of the nano-sized Fe-Co alloy contributed to the magnetic properties of the nanocomposite powders. The increase in coercive force was explained as being due to nano-sized particles of the Fe-Co alloy. KCI Citation Count: 1