【摘 要】
：
In this investigation,high density 2024Al/SiCp metal-matrix composites have been fabricated by powder metallurgy activated sintering technology.Loose powder by
【机 构】
：
InstituteofAdvancedMaterialsandTechnology,UniversityofScienceandTechnologyBeijing,Beijing100083,Chin
【出 处】
：
2013年全国粉末冶金学术会议及海峡两岸粉末冶金技术研讨会
论文部分内容阅读
In this investigation,high density 2024Al/SiCp metal-matrix composites have been fabricated by powder metallurgy activated sintering technology.Loose powder by means of ultrasonic vibration,control of sintering atmosphere on pressureless sintering,the relative density of 99％ or more of powder metallurgy of aluminium matrix composites can be obtained.The microstructure and SiC particulate performance of the 2024Al/ SiCp composites were investigated using optical morphology,scanning electronic microscopy,energy dispersive spectrometer and X-ray diffraction analysis.Microstructure characterization of the composites showed relative uniform reinforcement distribution and presence of minimal porosity.Meanwhile,The presence of submicron-SiC particulates assisted in improving the thermal stability,micro-hardness,elastic modulus and 0.2％ yield strength.Both of the 0.2％ yield strength and ultimate tensile strength increased with the increasing of SiC particulate content,however,decreased as the SiC particulate content overrun 25 vol.％.
其他文献
As wind development expands,concern for impacts to wildlife and habitats must be addressed.The availability of scientifically sound environmental practices
With the energy crisis intensified and peoples increasing awareness of environmental protection,wind energy as one of the clean,non-polluting and renewable
Dynamic and static frequency of the rotor about diameter of 1.4m small horizontal axis wind turbine was tested in different conditions by using PULSE16.1 st
三元硼化物金属基陶瓷具有优良的耐磨、耐蚀、耐高温性能.激光熔覆原位合成技术克服了金属与陶瓷间不易润湿的缺点可获得良好的界面结合强度.采用激光熔覆原位合成技术制备了
A treaty of 1959 made the Antarctica the continent of peace and science.It is the cleanest continent in the world,but also the most inhospitable,especially
本文在分析油液监测技术标准的内涵和意义基础上,简述了在我国应用和研究的现状,重点讨论了油液监测技术标准建设在今后的发展重点.要实现油液监测技术的快速发展，要从油液监
在分析船舶液压系统污染控制标准建设的意义和必要性的基础上,详细论述了国内外现行相关标准的内容,并对比国内外船舶行业标准指出了差别和标准中存在的问题,最后对船舶液压
本文提出了一种测量大型钢包回转轴承游隙的新方法,并结合润滑脂的光谱和铁谱分析等手段,对钢包回转轴承的磨损状态进行跟踪监测,准确预报了轴承存在的故障以及故障的严重程
为了在片式陶瓷上获得铜电极制成电容器,研究了前处理的活化工艺,如:活化液配方、活化时间对后续镀铜层的外观、可焊性和耐焊性、镀覆过程中的完全覆盖时间、铜镀层与基体的
Microwave sintering was explored in preparation of WC-8Co micro gears,which were formed by micro injection molding (μ-PIM).The micro gears were realized su