Fabrication of SiC-Particles-Shielded Al Spheres upon Recycling Al/SiC Composites

Fabrication of SiC-Particles-Shielded Al Spheres upon Recycling Al/SiC Composites
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DOI:
10.1007/s11661-011-0691-2
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发表时间:
2011-04
期刊:
Metallurgical and Materials Transactions A
影响因子:
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通讯作者:
D. Madarász;I. Budai;G. Kaptay
D. Madarász;I. Budai;G. Kaptay
中科院分区:
其他
文献类型:
--
作者:
D. Madarász;I. Budai;G. Kaptay

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在180℃的熔盐条件下,液态A359合金在碳化硅颗粒上的润湿性被发现,这意味着碳化硅颗粒优先选择熔盐相而不是铝相或铝/熔盐界面。因此,这种熔盐可以用于回收,即分离出碳化硅增强铝基复合材料中的相。如果分离过程中断,可以产生铝液滴(亚毫米凝固粉末),并被单层屏蔽的碳化硅颗粒稳定/包围。
Wettability of liquid A359 alloy on SiC particles under molten salt NaCl-KCl-NaF is found at 180 deg, meaning that SiC particles prefer the molten salt phase against the Al phase or the Al/molten salt interface. Thus, this molten salt can be used for recycling,i.e., to separate the phases in the SiC reinforced Al matrix composites. If the separation process is interrupted, Al droplets (submillimeter solidified powder) can be produced, stabilized/surrounded by a monolayer of shielding SiC particles.