三氧化二铝7075基复合材料的_摩擦磨损性能研究毕业设计.doc

内蒙古工业大学本科毕业论文本科毕业论文题目: Al 2O 3/ 7 0 7 5 基复合材料的摩擦磨损性能研究内蒙古工业大学本科毕业论文摘要颗粒增强铝基复合材料因其特有的比重轻、比强度与比模量高、耐磨及耐高温等优良性能,在航空航天、电子和汽车制造等行业中具有广阔的应用前景。研究了原位反应生成 A1 20 3制备颗粒增强铝基复合材料的工艺,其制备条件是:熔体温度 900 ℃,CuO 粉末与 Al粉混合均匀,压制成块,加入铝液中搅拌,扒去表面的浮渣,将熔体浇铸到预热的模具中,快速冷却。颗粒是在基体内部原位反应生成,颗粒细小,表面洁净,与基体结合良好。将试样切割成块,在摩擦磨损机上分别设置 20N ,30N ,40N ,50N 和转速为 80r/min, 100r/min, 110r/min, 120r/min 摩擦 600s 后称量其磨损量。研究表明加入 8% A1 20 3后硬度和磨损性能大大提高,表面磨痕变浅。关键词:原位反应;颗粒增强体;磨损性能内蒙古工业大学本科毕业论文 Abstract Partieulate reinofreed metal positesPossess several additional advantages such as light weight , high speeific strength and stinffess , wear-resistingand high temperature-resisting. Studing in situ reaction of A1 20 3 particulate reinforced aluminum posite prepared by the process, the preparation conditions are: melt temperature is900 ℃, CuO powder mixed with Al powder, pressed into blocks, by adding aluminum liquid mixing, Pa to the surface scum, will melt into warm mold casting and rapid cooling. Particles within the matrix in situ in the reaction, small particles, surface cleanliness, and good substrate. The sample cut into pieces, the friction and wear machine were set to 20N, 30N, 40N, 50N, and speed 80r/min, 100r/min, 110r/min, 120r/min 600s after weighing the friction wear. The results show that, after adding 8% A1 20 3 greatly improved hardness and wear resistance of the surface, the marks are shallow. Keywords : In situ reaction ; particle reinforcement ; Wear 内蒙古工业大学本科毕业论文目录第一章绪论.................................................................................................................. 5 颗粒增强金属基复合材料.............................................................................. 2 颗粒增强金属基复合材料的制备工艺............................................... 2 颗粒增强金属基复合材料的原位反应制备方法............................... 3 铝基原位复合材料的研究现状........................................................... 5 颗粒增强铝基复合材料的应用及展望............................................... 6 原位反应铝基复合材料的研究发展方向.......................