Morphology, structure and chemistry of extracted diesel soot: Part II: X-ray absorption near edge structure (XANES) spectroscopy and high resolution transmission electron microscopy

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• 作者：Mihir Patel ; Pranesh B. Aswath ; ^{aswath@uta.edu}
• 关键词：Diesel soot ; Exhaust gas recirculation soot ; Lubrication ; XANES
• 刊名：Tribology International
• 出版年：2012
• 期刊代码：88_0301679x
• 类别：ce
• 出版时间：August, 2012
• 卷：52
• 期：Complete
• 页码：17-28
• 文件大小：2447 K

摘要

Chemical composition of diesel soot extracted from used diesel engine has been investigated using X-ray Absorption Near Edge Structure (XANES) spectroscopy and high-resolution transmission electron microscopy (HRTEM). The XANES spectra indicate the presence of phosphates of zinc and calcium and sulfates of zinc and calcium as well as the presence of sulfides of zinc. HRTEM coupled with EDS and lattice imaging indicates the presence of nanoparticles of Ca₃(PO₄)₂ and Fe₂O₃ embedded in the turbostratic soot structure. Both Ca₃(PO₄)₂ and Fe₂O₃ are hard particles and appear to have been incorporated within the turbostratic soot structure during third body wear.