铸造技术2016，Vol.37Issue(6)：1090-1094,5.DOI:10.16410/j.issn1000-8365.2016.06.003
颗粒形貌对SiCp/Al复合材料热性能的影响
Effect of SiC Particle's Morphology on Thermal Conductivity and Thermal Expansion Properties of SiCp/Al Composites
蔡庆 1张晓波 1孙靖 1张亦杰 1马乃恒 1王浩伟1
作者信息
- 1. 上海交通大学材料科学与工程学院,上海200240
- 折叠
摘要
Abstract
In order to investigate the effect of morphology of SiC particles on the thermal conductivity,the sharp edge of the coarse SiC particles was polished by water jet Saw,SiCp/Al composites with 67％ volume fraction of SiC particles was fabricated by pressure infiltrating.Meanwhile the thermal conductivity and the coefficient of thermal expansion was predicted by the different effective medium (DEM),Kemer,Tumer analysis and 2D finite element molding (FEM) respectively.The prediction results show that the 2D FEM results match the experiment results perfectly.The comparison between the 2D FEM results and experimental results shows that the thermal conductivity and the coefficient of thermal expansion are affected by the morphology of SiC particles.The thermal conductivity of SiCp/Al composites with lower ratio of coarse particles is higher than that with higher ratio of coarse particles,meanwhile the thermal conductivity and the coefficient of thermal expansion of SiCdAl composites with lower ratio of coarse particles has small fluctuation,conversely the thermal conductivity and the coefficient of thermal expansion of SiCp/Al composites with higher ratio of coarse particles has large fluctuation.关键词
SiCp/Al复合材料/导热率/热膨胀系数/2D有限元模型Key words
SiCp/Al composites/thermal conductivity/the coefficient of thermal expansion/2D FEM model分类
通用工业技术引用本文复制引用
蔡庆,张晓波,孙靖,张亦杰,马乃恒,王浩伟..颗粒形貌对SiCp/Al复合材料热性能的影响[J].铸造技术,2016,37(6):1090-1094,5.
