Preparation and Characterization of Nano-Fe₅₀Ni₅₀ Alloy Powder by Chemical Co-Precipitation Hydrogen Reducing Process

摘要

In this paper, the 0.1 mol·L−1 FeSO₄, NiSO₄ mix-solution and 4 mol·L−1 NaOH solution were prepared by FeSO₄·7H₂O, NiSO₄·6H₂O and NaOH as raw materials. The Ni-Fe precursor nano-powders were prepared by chemical co-precipitation. The reaction conditions were that dropping speed 50 ml·min−1, pH value of reacting terminal 12, stirring speed 1200 r·min−1, reacting temperature 20°C, and reacting time 40 min. The shape of Ni-Fe precursor nano-powders were nano-stick and nano-ball. Length of Fe50Ni50 precursor nano-stick was 100-150 nm, diameter was 10-30 nm. Diameter of Fe50Ni50 precursor nano-ball was 10-50 nm. The Fe50Ni50 alloy nano-powders were prepared with materials Fe50Ni50 composite oxide by hydrogen co-reduction in closed circular system. The process conditions were that reduction temperature 600°C, reduction time 30 minutes. The Fe50Ni50 alloy nano- powders size was less than 100 nm.View full textDownload full textKeywordsFe50Ni50 alloy, hydrogen co-reduction, co-precipitation, nanometerRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10584587.2011.576187