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首页> 外文期刊>Journal of the Indian Chemical Society >Green synthesis of silica nanoparticles and its corrosion resistance behavior on mild steel
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Green synthesis of silica nanoparticles and its corrosion resistance behavior on mild steel

机译：二氧化硅纳米粒子的绿色合成及其在低碳钢上的耐腐蚀性能

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摘要

In the past few years, several studies have been made in the preparation of silica froth natural resOurces (rice husk) and its effects on purification and characterization,. studies. The waste materials generally have been dis-. posed off without any environmental pollution but indeed the waste materials itself are recognized as a source of silica. In the present investigation, rice husk is subjected to sintering at 900 degrees C for 7 h. The sintered sample was then treated with 1 M NaOH to form sodium silicate. Finally, the gel was taken and reacted with 6 M H2SO4 to precipitate silica. The precipitated samples were characterized by XRD and the morphology was studied by AFM analysis. The silica coatings represent a PrOmising apProach for the development of a corrosion protective surface because of its chemical inertness, barrier properties. Silica coatings were developed on mild steel substrates by dip coating and its electrochemical behavior has been evaluated by the Tafel extrapolation method-and EIS analysis using 3.5% sodium chloride solution is electrolytes. From the results, it was found that the silica coatings produced by dip coatings has excellent corrosion resistance behavior than the uncoated.
机译：在过去的几年中，已对硅泡沫天然资源（稻壳）的制备及其对纯化和表征的影响进行了一些研究。学习。废料一般都已丢弃。废弃后不会造成任何环境污染，但实际上废料本身被认为是二氧化硅的来源。在本研究中，将稻壳在900摄氏度下烧结7小时。然后将烧结的样品用1M NaOH处理以形成硅酸钠。最后，取出凝胶并使其与6M H 2 SO 4反应以沉淀二氧化硅。通过X射线衍射（XRD）对沉淀的样品进行表征，并通过原子力显微镜（AFM）分析研究形貌。二氧化硅涂层由于其化学惰性，阻隔性能而代表了用于开发防腐表面的PrOmising apProach。通过浸涂在低碳钢基材上开发了二氧化硅涂层，并已通过Tafel外推法评估了其电化学行为-使用3.5％氯化钠溶液作为电解质的EIS分析。从结果发现，由浸涂产生的二氧化硅涂层比未涂层具有优异的耐腐蚀性。

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