(哈尔滨工业大学 材料科学与工程学院， 哈尔滨 150001)
摘 要: 采用挤压浸渗法制备了短碳纤维增强铝基复合材料，研究了浸渗压力、铝液浇注温度、纤维预热温度等对复合材料组织的影响。结果表明：合适的工艺参数为铝液浇注温度740～800℃，预制块预热温度350～400℃，浸渗压力2～5MPa；在氩气保护下，无须对碳纤维表面进行涂层处理，可获得组织均匀的铝基复合材料。加入Al2O3颗粒可以改善纤维分布的均匀性。
关键词: 碳纤维；铝基复合材料；浸渗
short carbon fiber reinforced
aluminum alloy matrix composites
（School of Materials Science and Engineering，
Harbin Institute of Technology，Harbin 150001, China）
Abstract:The influence of infiltration pressure，liquid aluminum pouring temperature，fiber-preheating temperature on the composites microstructures was studied. The results show that aluminum matrix composites with uniform microstructure is obtained without surface coating treatment on carbon fiber under the condition of appropriate processing parameters (liquid aluminum pouring temperature is 740～800℃，perform preheating temperature is 350～400℃， infiltration pressure is 2～5MPa) and Ar gas protecting. Uniformity of fiber distribution is improved by adding Al2O3 particles.
Key words: carbon fiber; aluminum alloy matrix composite; liquid infiltration
