Compositional characteristics of magnetite synthesised from aqueous solutions at temperatures upto 523K
Compositional characteristics of magnetite synthesised from aqueous solutions at temperatures upto 523K
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DOI：
10.1016/0025-5408(93)90024-8
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发表时间：
1993-08
影响因子：
5.4
通讯作者：
G. Visalakshi;G. Venkateswaran;S. K. Kulshreshtha;P. Moorthy
中科院分区：
文献类型：
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作者：
G. Visalakshi;G. Venkateswaran;S. K. Kulshreshtha;P. Moorthy
比较了不同水溶液法制备的磁铁矿的组成，即：a）采用Fe 2+-Fe 3+的混合物，B）在363 K下氧化Fe（OH）2的悬浮液，c）在523 K下水热处理Fe（OH）2浆料。将碳钢（CS）试样在473 K的pH为10的溶液中（有和没有络合剂）暴露导致在合金表面上优先形成磁铁矿而在溶液中保持铁铁矿作为污垢。用湿化学分析、X-射线衍射、热重和穆斯堡尔谱等方法对所得铁氧体进行了表征。
A comparison has been made of the compositions of magnetites prepared by different aqueous routes namely: a) by employing a mixture of Fe 2+ Fe 3+, b) by oxidising at 363K a suspension of Fe (OH) 2 & c) by giving a hydrothermal treatment at 523K to a Fe (OH) 2 slurry. Exposing a carbon steel (CS) specimen to a pH 10 solution at 473K with & without complexing agents has resulted in a preferential formation of magnetite on the alloy surface while haemetite remained as crud in solution. Wet chemical analysis, X-ray, TG and Mossbauer studies were carried out to characterise the ferro-ferrites obtained.