宏观石墨颗粒增强工业纯铝金属基复合材料界面阻尼机制  

Interface damping mechanism of macroscopic graphite particulates reinforced commercially pure aluminum metal matrix composites

作　　者：魏健宁[1] 钟健松[1] 余里生[1] 黄天成[1] 胡华[1] 谢卫军[1] 

机构地区：[1]九江学院理学院,江西九江332005

出　　处：《合肥工业大学学报（自然科学版）》2010年第10期1481-1484,共4页Journal of Hefei University of Technology：Natural Science

基　　金：江西省自然科学(青年)基金资助项目(0550050);江西省教育厅科研资助项目(13-3-B-04)

摘　　要：文章运用空气加压渗流技术制备了宏观石墨颗粒增强的工业纯铝金属基复合材料,在温度为25~400℃和频率为0.5、1.0、3.0 Hz条件下,采用多功能内耗仪测量了材料的内耗和相对动力学模量,用透射电子显微镜对材料的微观结构进行了表征;依据内耗测量和微观分析研究了宏观石墨颗粒增强工业纯铝金属基复合材料的界面阻尼行为,结果表明材料的界面阻尼机制为弱结合界面阻尼。Macroscopic graphite particulate reinforced commercially pure aluminum metal matrix composites（MMCs） were prepared by air pressure infiltration process.The damping characterization was conducted using a multifunction internal friction apparatus.The internal friction and relative dynamic modulus were measured at frequencies of 0.5 Hz,1.0 Hz and 3.0 Hz in the range of 25 ℃to 400 ℃.The microstructure analysis was performed using transmission electron microscopy.The interface damping of macroscopic graphite particulates reinforced commercially pure aluminum MMCs was studied by the measurement of internal friction and microstructure analysis.Results show that the operative interface damping mechanism is weakly bonded interface damping.

关 键 词：界面阻尼 内耗 石墨颗粒 工业纯铝 

分 类 号：TG146.2[一般工业技术—材料科学与工程]