Abstract The Ni70Ga30, Ni70In30, Ni70Sn30 alloys were manufactured by melt spinning technique. The as melt-spun ribbons showed a multiphase microstructure prone to alteration by heat treatment at 800 °C. The average grain size in the as melt-spun ribbons was circa 3–4 μm and it increased after heat treatment; the increase is tenfold in the case of the Ni70In30 ribbon due to its low homologues temperature. The ribbons show strongly developed fiber texture with high concentration of high angle grain boundaries. Martensite microstructure was found in the Ni70Ga30 ribbon. At room temperature all the studied ribbons were found active for selective hydrogenation of phenylacetylene with conversion rates after 4 h reaction time of around 20%. Further improvement of catalytic activity is expected with surface pretreatment, pulverization and increasing of the reaction temperature. Altogether the as melt spun ribbons present an attractive alternative to cold rolled and annealed ribbons and to nanocrystalline intermetallics for application in a range of chemical reactions.

中文翻译：

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金属间化合物 Ni70Ga30、Ni70In30 和 Ni70Sn30 熔纺合金苯乙炔选择性加氢的显微组织和催化活性

摘要 采用熔纺技术制备Ni70Ga30、Ni70In30、Ni70Sn30合金。熔融纺丝带显示出多相微观结构，易于在 800 °C 下热处理发生变化。熔纺带的平均晶粒尺寸约为 3-4 μm，热处理后晶粒尺寸增加；Ni70In30 碳带由于其低同系物温度而增加了十倍。条带显示出强烈发展的纤维织构，具有高浓度的高角度晶界。在 Ni70Ga30 薄带中发现了马氏体组织。在室温下，所有研究的带都被发现对苯乙炔的选择性氢化具有活性，4 小时反应时间后的转化率约为 20%。通过表面预处理有望进一步提高催化活性，粉碎和提高反应温度。总而言之，熔纺带是冷轧和退火带以及纳米晶金属间化合物的一种有吸引力的替代品，可用于一系列化学反应。