摘要
对采用熔体直接发泡法制备的SiCP/ZL104泡沫复合材料进行了阻尼性能和机理的分析。研究结果表明:在孔径一定的条件下,SiCP/ZL104泡沫复合材料室温下的阻尼性能表现为损耗因子随着孔隙率的增大呈非线性递增趋势,且递增幅度越来越小;SiCP/ZL104泡沫复合材料的阻尼性能好于相同孔隙率的泡沫铝、SiCP/ZL104复合材料和ZL104的阻尼性能;SiCP/ZL104泡沫复合材料的损耗因子随着SiCP含量的增加和SiCP粒度的减小而增大。SiCP/ZL104泡沫复合材料内部的气泡以及高密度位错对其阻尼性能的提高起主要作用。
The damping properties and damping mechanism were investigated for SiCp/ZL104 composite foams, fabricated by the method of direct melt foaming. The results show that under the conditions of the same pore-diameter, the loss factors of SiCp/ZL104 composite foams are non-linear rising with the increase of porosity at the ambient temperature, and the incremental changes lessen gradually. The damping properties of SiCp/ZL104 composite foams are better than those of foam aluminum, SiCp/ZL104 composites and ZL104 alloy. The loss factors of SiCp/ZL104 composite foams increase with the increase of the content of SiCp and the decrease of granularity of SiCp. Pores and high density dislocations in SiCp/ZL104 composite foams contribute to their damping properties.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2007年第1期65-69,共5页
Acta Materiae Compositae Sinica
基金
吉林大学‘985工程’项目
