Ball-milled Al-Sn alloy as composite Phase Change Material

被引：21

作者：

Confalonieri, Chiara ^{[1
]}

Grimaldi, Aldo Tommaso ^{[1
,2
]}

Gariboldi, Elisabetta ^{[1
]}

机构：

[1] Politecn Milan, Dept Mech Engn, Via Masa 1, I-20156 Milan, Italy

[2] Ist Nazl Fis Nucleate INFN, Lab Acceleratori & Supercondutt Applicata LASA, Via Fratelli Cervi 201, I-20090 Milan, Italy

来源：

MATERIALS TODAY ENERGY | 2020年 / 17卷 / 17期

关键词：

Phase Change Alloy; Form-stable; Powder metallurgy; Thermal stability; Microstructure; THERMAL-ENERGY STORAGE; LATENT-HEAT; NUCLEATION; DENSITY; SIZE;

D O I：

10.1016/j.mtener.2020.100456

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The present study concerns a fully metallic solid-liquid composite Phase Change Material based on an Al-Sn Miscibility Gap Alloy produced by powder metallurgy, including its ball-milling, compression and further sintering heat treatment. The materials obtained by different routes display a narrow melting temperature range at about 230 degrees C, corresponding to the phase transformation of Sn- or of Sn-rich eutectic. The microstructures obtained by this manufacturing process lead to form-stable PCMs, which can keep their shape and prevent active phase leakage in service conditions. Ball milling of metal powders as mixing technique allowed to obtain a very fine microstructure, resulting in stability of thermal response and improvement of mechanical properties. Among the investigated Al-405n mass% samples, the most promising were those compressed at 240 degrees C followed by sintering at 500 degrees C. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：9

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