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Chemical components and microtopography of (100) surface for orthopyroxene

机译:邻苯二酚(100)表面的化学成分和微观形貌

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XPS and AES depth composition profile studies were carried on to understand chemical components of (100) surfaces for Chengde hypersthene from Hebei Province, China, and Bamble enstatite from Norway. Also, to understand the microtopography of them the AFM observation was carried on. There are obvious differences between chemical components of (100) surface and those of mineral inner. Compared with inner mineral Si~(4+) proportion in total cations has no distinguished variation, whereas Ca~(2+) and Al~(3+) proportions increase respectively, and Mg~(2+) proportion decreases. AES depth composition profile of 2000s shows that at a depth of 70 nm the atomic concentrations (%) for each element (except Si in Chengde hypersthene) slightly go up and down, but the average values have no obvious change. On the profile, the atomic concentrations (%) of Al and Si for Chengde hypersthene present a compensated relationship. Obviously, the Si and Al must have the relationship of isomorphic replacement on the (100) surface. The image of AFM shows that there is hillock growth on the (100) surface in the layered form of the polygon with 0 to several hundreds nm in thickness. The growth is a sort of secondary phyllosilicate minerals. The observation of the above-mentioned phenomenon and the recognition on the above regularities are benefit for understanding of the mechanism for weathering and water-rock reactions.
机译:进行了XPS和AES深度成分分布图研究,以了解(100)表面的化学成分,这些物质分别来自中国河北省的承德超硬石和挪威的Bamble顽辉石。另外,为了了解它们的微观形貌,进行了AFM观察。 (100)表面的化学成分与矿物内部的化学成分之间存在明显差异。与内部矿物质相比,总阳离子中Si〜(4+)的比例无明显变化,而Ca〜(2+)和Al〜(3+)的比例分别增加,而Mg〜(2+)的比例减少。 2000年代的AES深度成分图表明,在70 nm的深度处,每个元素的原子浓度(%)(承德高硫杂环丁烷中的Si除外)略有上升和下降,但平均值没有明显变化。在剖面上,承德高硫杂环丁烷的Al和Si原子浓度(%)具有补偿关系。显然,Si和Al必须在(100)表面上具有同晶替代关系。 AFM的图像显示,厚度为0到几百纳米的多边形的分层形式在(100)表面上有小丘生长。生长是一种次生页硅酸盐矿物。对上述现象的观察和对上述规律性的认识有利于理解风化和水-岩反应的机理。

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