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论文类型：期刊论文

发表时间：2019-02-15

发表刊物：MATERIALS LETTERS

收录刊物：SCIE、Scopus

卷号：237

页面范围：193-196

ISSN号：0167-577X

关键字：Energy storage and conversion; Composite materials; Phase change material; Thermal cycling; Al-Si alloy

摘要：A novel phase change material based on the clad Al-Si composite ingot with eutectic Al-Si/Si-rich core-shell structure was designed for the high temperature thermal storage. The constructed Al-Si composite with core-shell structure exhibits a high thermal conductivity, large phase change enthalpy, and excellent cycling performance. Due to the spheroidized primary Si particles and continuous alpha-Al matrix in the Si-rich layer, the Al-Si composite ingot holds a good shape-stable property at 650 degrees C, which prevents the leakage of eutectic Al-Si melt during thermal cycling. Therefore, this novel clad Al-Si composite is a promising material for high temperature thermal storage, which may be directly used as an actual thermal storage device without containers. (C) 2018 Elsevier B.V. All rights reserved.