Activated Deposition of Aluminum Silicate Film at Granite-Dry Steam Interaction

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  • YAMASAKI Nakamichi
    Department of Geosciences and Technology, Graduate School of Engineering, Tohoku University
  • KORABLOVA Inna R.
    Department of Geosciences and Technology, Graduate School of Engineering, Tohoku University
  • KORABLOV Sergiy F.
    Department of Geosciences and Technology, Graduate School of Engineering, Tohoku University

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  • 花崗岩-乾燥蒸気相互作用下のアルミニウムケイ酸塩薄膜の活性化析出

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This work focused on granite-SUS pipe-dry steam interaction in the presence of copper. Three types of hydrothermal experiments were conducted: 1) SUS-Cu-granite, 2) SUS-Cu, 3) SUS-granite. It was found that a high protective amorphous AlSi1.6O4 layer (thickness about 5 μm) formed on the supporting pipe surface only in the case of SUS-Cu-granite interaction. The formed layer was characterized by X-ray diffraction (XRD) techniques and scanning electron microscopy (SEM) equipped with an energy dispersive X-ray (EDX) device. According to kinetics data this layer was confirmed to have highly protective properties.

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