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Structure of Ni-Al intermetallic porous thick films produced by microscopic reactive infiltration

机译:微观反应渗入法制备Ni-Al金属间多孔厚膜的结构

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A microchanneling process utilizing microscopic reactive infiltration produces microchannels and alloy lining layers in metal bodies. We examined the composition and structure of a Ni-Al intermetallic lining layer with a peculiar porous structure produced by Ni-Al reactive infiltration. The Ni-Al lining layer is a thick film consists of multiple sub-layers and has many micropores. Such a porous structure and the heat resistance of Ni-Al intermetallic compound are appropriate for a catalyst support in high-temperature use. Image analysis and EPMA revealed that both aluminum concentration and voidage in the Ni-Al lining layer show a graded distribution along the thickness direction of the lining layer.
机译:利用微观反应渗透的微通道过程在金属体中产生微通道和合金衬里层。我们研究了由Ni-Al反应渗透产生的具有特殊多孔结构的Ni-Al金属间衬层的组成和结构。 Ni-Al衬里层是由多个子层组成的厚膜,并具有许多微孔。 Ni-Al金属间化合物的这种多孔结构和耐热性适合于高温用途中的催化剂载体。图像分析和EPMA表明,Ni-Al衬里层中的铝浓度和空隙率都沿着衬里层的厚度方向显示出梯度分布。

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