期刊
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
卷 29, 期 7, 页码 4822-4829出版社
SPRINGER
DOI: 10.1007/s11665-020-04990-9
关键词
heat dissipation; in situ; self-propagating high-temperature synthesis (SHS); ZrB2-SiC
资金
- National Key Research and Development Program of China [2016YFB0700204, 2019YFC1711904]
- National Natural Science Foundation of China [51702331, 51702332, 51572268, 51432004]
The present work focuses on the in situ self-propagating high-temperature synthesis (SHS) of ZrB2-SiC (ZS) ceramic composites in a Si-Zr-B4C system. The reaction process characteristics, microstructure and radiative properties of products were investigated. The thermal conductivity of ZS/acrylic composite coating filled with 40 wt.% ZS is 1.77 W/m K, which is ninefold enhancement in comparison with neat acrylic coating. In addition, in situ ZS/acrylic composite coatings showed an excellent increase in infrared emissivity up to 0.93 for 45 wt.% in situ ZS content, which was nine times more than bare aluminum alloy substrate. The produced coatings remarkably increased the heat dissipation performance of an aluminum alloy tube by 17.9%, implying a promising prospect for real passive heat dissipation applications.
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