生活垃圾灰渣增强铝基复合材料的性能

Mechanical Properties of Al/ Bottom Ash in Municipal Solid Waste Incinerator Composites

研发了以生活垃圾焚烧灰渣为增强相 ,制备铝 /生活垃圾灰渣复合材料的新工艺 .对铝与生活垃圾灰渣配比、烧结温度、保温时间等因素对铝 /生活垃圾灰渣复合材料的性能影响进行了实验研究 .试验表明 :当铝与生活垃圾灰渣配比为 8:2 ,烧结温度为 90 0℃ ,保温时间为 1 .5h ,在纯N2 保护性气氛的条件下制得的复合材料具有良好的机械性能 ,如热膨胀系数为 0 .3,密度为2 .43g/cm3,弹性模量为 30 1 4.3MPa ,耐磨性能比铝镁合金提高了 1 .

A type of composite combining Al powder with the bottom ash in municipal solid waste incinerator is developed through liquid phase sintering powder metallurgy. The effect on the performance of these composite materials with the ratio of ash/Al, sintered temperature and residing time are experimentally examined. The experimental results indicate that the composites enjoy excellent mechanical properties when the ratio of ash/Al is 8:2, and the materials are sintered at 900℃ residing time of 1.5?hr in pure N 2 atmosphere. Under these conditions, the properties of the composites are expected to reach as following: thermal expansion coefficient of 0.3, density of 2.43 g/cm 3, elastic modulo of 3?014.3?MPa . Moreover, the wear resistance of these composites is 2.3 times higher than that of aluminum-magnesium alloy.