碳化硅铝复合材料的制备论文-毕业论文（设计）.docVIP

PAGE \* MERGEFORMAT 31 论文题目：碳化硅铝复合材料的制备 专 业：材料科学与工程 学 生：段红伟 签名: 指导老师：王涛 签名： 摘要 碳化硅颗粒增强铝基复合材料( SiCp / Al 复合材料) 具有高比强度和比刚度、耐磨、耐疲劳、低热膨胀系数、低密度、高微屈服强度、良好的尺寸稳定性和导热性、优异的力学性能和物理性能。 本文采用粉末冶金法制备SiCp复合材料。使用X射线衍射仪(XRD)、扫描电镜(SEM)，抗折强度试验，洛氏硬度实验以及密度，吸水率，气孔率实验等方法研究碳化硅铝复合材料的微观结构、性能特点和机理。得到实验结果为SiCp复合材料组织均匀，致密，无杂质，气孔少等优良特点。随着SiC复合材料质量分数的增加，SiCp的密度、抗折强度、硬度均相应增大，而气孔率、吸水率随之减小。SiC质量分数一定的情况下，随着烧结温度的升高试样的性能也越来越好。 关 键 字：粉末冶金法 碳化硅铝复合材料 制备 性能 研究类型：实验型 Subject: Preparation of Silicon Carbide Reinforced Aluminum Composite Speciality: Materials Science and Engineering Name: Duan hongwei Signature: Instructor: Wang Tao Signature: Abstract Silicon carbide particles reinforced aluminum matrix composites (SiCp / Al matrix composite) with high specific strength and stiffness, wear and fatigue resistance, low thermal expansion coefficient, low density and high micro-yield strength, good dimensional stability and thermal conductivity , excellent mechanical properties and physical properties. In this paper, Using method of powder metallurgy to preparation SiCp composite materials. Using X-ray diffraction (XRD),Scanning electron microscopy (SEM), bending strength and Rockwell hardness test and the density, water absorption, porosity of experimental methods research aluminum silicon carbide composite material microstructure, properties and mechanism. The experimental results obtained for the SiCp homogeneous, compact, no impurities, porosity and less good features. With the increase of SiC quality score, SiCp density, flexural strength and hardness, and all relevant porosity, bibulous rate is then decreased.SiC quality score certain situations, the sintering temperature elevatory sample properties and strengthened. Key words : Method of powder metallurgy; SiCp / Al matrix composite; Preparation; Performance; Thesis type：Experimental 目录 TOC \o 1-3 \h \u HYPERLINK \l _Toc263882