Efficient separation of reinforcements and matrix alloy from aluminum matrix composites by supergravity technology
Efficient separation of reinforcements and matrix alloy from aluminum matrix composites by supergravity technology
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利用超重力技术从铝基复合材料中高效分离增强材料和基体合金
DOI：
10.1016/j.jallcom.2020.155814
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发表时间：
2020-05
影响因子：
6.2
通讯作者：
Guo Zhancheng
中科院分区：
文献类型：
--
作者：
Sun Ningjie;Wang Zhe;Guo Lei;Wang Lu;Guo Zhancheng
提出了一种超重力诱导分离法从废铝基复合材料中回收基体合金和SiC颗粒。考察了重力系数（G）、温度（T）和分离时间（t）对分离效果的影响，并分析了相应的分离机理。在最佳工艺条件下（T= 710 °C，G= 600，t = 300 s），Al和SiC的回收率分别达到83.9%和98.2%。根据毛细管定律计算的分离效率与实测值吻合较好。在710 °C时，液相Al与SiC之间生成Al4C3和游离Si的界面反应受到限制。残留物中残留有少量的Al4C3。通过酸洗去除残渣中的Al 4C3和过量的金属Al后，SiC颗粒被彻底回收，可以直接作为新鲜增强材料重复使用。此外，放大离心分离装置的概念设计，回收AMC废料的工程规模。初步结果表明，超重力技术可以作为一种实用的方法，从废料AMC中回收增强体和基体合金。
A supergravity-induced separation method was proposed to recover matrix alloy and SiC particles from scrap aluminum matrix composites (AMCs). Effects of the gravity coefficient (G), temperature (T), and separation time (t) on the separation efficiencies were evaluated and the corresponding separation mechanism was analyzed. Under optimum conditions (T= 710 °C,G= 600, andt= 300 s), the recovery rates of Al and SiC reached 83.9 and 98.2%, respectively. The theoretical calculated separating efficiencies based on the capillary law were in good consistent with the observed values. At 710 °C, the interfacial reaction between liquid Al and SiC that produced Al4C3and free Si was limited. A small amount of Al4C3was retained in the residue. After removing Al4C3and excess metallic Al from the residue by acid pickling, the SiC particles were thoroughly recovered and could be directly reused as fresh reinforcements. Moreover, an amplified centrifugal separation apparatus was conceptually designed for recycling AMC scraps on an engineering scale. Preliminary results indicate that supergravity technology can be potentially employed as a practical process for recovering reinforcements and matrix alloy from scrap AMCs.
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DOI：
10.1007/s11661-011-0691-2
发表时间：
2011-04
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
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通讯作者：
D. Madarász;I. Budai;G. Kaptay
影响因子：
4.5
作者：
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通讯作者：
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DOI：
10.1007/s00170-016-9012-7
发表时间：
2017-02
期刊：
The International Journal of Advanced Manufacturing Technology
影响因子：
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作者：
R. Tavakoli
通讯作者：
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DOI：
10.1007/bf02668570
发表时间：
1987-06
期刊：
Metallurgical and Materials Transactions A
影响因子：
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作者：
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通讯作者：
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DOI：
10.1007/s11663-010-9367-3
发表时间：
2010-08-01
影响因子：
3
作者：
Damoah, Lucas Nana Wiredu;Zhang, Lifeng
通讯作者：
Zhang, Lifeng