Filling of surface pores of aluminum foam with polyamide by selective laser melting for improvement in mechanical properties
Filling of surface pores of aluminum foam with polyamide by selective laser melting for improvement in mechanical properties
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DOI：
10.1016/j.jmatprotec.2016.06.025
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发表时间：
2016-11-01
影响因子：
6.3
通讯作者：
Utsunomiya, Hiroshi
中科院分区：
文献类型：
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作者：
Matsumoto, Ryo;Kanatani, Shigehiro;Utsunomiya, Hiroshi
为了改善多孔结构材料的力学性能，采用选择性激光熔融(SLM)技术对聚酰胺12(尼龙12)填充工业用闭孔型泡沫铝的表面气孔进行了研究。结果表明，在平均能量密度为10J/mm(2)的激光照射下，聚酰胺粉末连续熔融和固化。采用单轴压缩试验研究了聚酰胺表层泡沫铝(复合夹层结构)的力学性能。有表面层的泡沫比压缩强度最大提高了2.5倍。这不仅是由于聚酰胺的高比强度，而且是由于形成了三明治结构。(C)2016爱思唯尔B.V.保留所有权利。
To improve mechanical properties of porous structured materials, selective laser melting (SLM) was used to fill the surface pores of a commercial closed-cell type aluminum foam with polyamide 12 (nylon 12). It was found that polyamide powder was continuously melted and solidified under laser irradiation at an average energy density of 10 J/mm(2). The mechanical properties of the aluminum foam with fabricated polyamide surface layer (composite sandwich structure) was investigated using a uniaxial compression test. The specific compressive strength of the foam with surface layer increased 2.5 times in maximum higher than that of the foam without surface layer. The improvement was not only due to the high specific strength of the polyamide but also due to the formation of the sandwich structure. (C) 2016 Elsevier B.V. All rights reserved.