(哈爾濱工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院， 哈爾濱 150001)
摘 要: 采用擠壓浸滲法制備了短碳纖維增強(qiáng)鋁基復(fù)合材料，研究了浸滲壓力、鋁液澆注溫度、纖維預(yù)熱溫度等對(duì)復(fù)合材料組織的影響。結(jié)果表明：合適的工藝參數(shù)為鋁液澆注溫度740～800℃，預(yù)制塊預(yù)熱溫度350～400℃，浸滲壓力2～5MPa；在氬氣保護(hù)下，無(wú)須對(duì)碳纖維表面進(jìn)行涂層處理，可獲得組織均勻的鋁基復(fù)合材料。加入Al2O3顆粒可以改善纖維分布的均勻性。
關(guān)鍵字: 碳纖維；鋁基復(fù)合材料；浸滲
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
