期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2015
卷号：6
期号：1
页码：155-167
出版社：University of Mohammed Premier Oujda
摘要：The present paper reports the effect of sintering parameters (i.e. temperature and time) on the corrosion characteristics of Iron (Fe) – Alumina (Al 2 O 3 ) metal matrix nanocomposites (MMNCs) synthesized by powder metallurgy (P/M) technique tested in freely aerated 1 N HCl solution and compared with that of pure iron specimen. The composite for the present investigation contains 10% Al 2 O 3 and 90% Fe. The composites were prepared by ball milling followed by compaction and then sintering the specimens in an inert atmosphere in the temperature range of 900-1100°C for 1 to 3 hour. Phase and microstructure of the prepared nanocomposite specimens showed the presence of nano size iron aluminate (FeAl 2 O 4 ) phase which is formed due to reactive sintering. It was found that the formatio n of nano iron aluminate improved the corrosion resistance of Fe-Al 2 O 3 nanocomposites. XRD pattern of the corroded specimen sho wed the presence of aluminum chlorate (AlCl 3 O 12 ) phase along with iron (Fe), aluminum oxide (Al 2 O 3 ) and trace amount of iron chloride (FeCl 2 ) phases. SEM studies also showed the formation of nano size particles of constituent phases
关键词：Metal Matrix Nanocomposites (MMNCs); Powder Metallurgy (P/M); Tafel Polarization; X;ray diffraction ; (XRD) and Scanning Electron Microscopy (SEM).
