多孔预制体对SiC/Al复合材料孔隙率的影响
Influence of Porous Preforms on Porosity of SiC/Al Composites
摘 要
采用无压浸渗法制备了SiC含量较高的SiC/Al复合材料,分析了造孔剂添加量对多孔预制体孔隙率的影响,利用铝液浸渗多孔体理论分析了多孔预制体孔隙结构对复合材料孔隙率的影响.结果表明：通过添加造孔剂可以调节多孔预制体的孔隙结构,使预制体的孔隙率增加;多孔预制体的孔隙结构的变化可以调节复合材料的孔隙率.多孔预制体的孔隙率越高、孔隙尺寸越大,则铝液浸渗畅通,复合材料的孔隙率越小.
多孔预制体
孔隙率
SiC/Al composites
porous preform
porosity
Abstract
SiC/Al composites were fabricated by pressureless infiltration technique.The effect of pore-making agent on porosity of porous preforms was studied.The results show that infiltration of liquid Al into porous preforms relies on various obstructions and force of infiltration,especially on the properties of the porous preforms.Composities with low porosity and high properties can be obtained by adjusting porosity and pore structures.Practice shows that the higher the porosity of porous preform and the larger diameter of pore in porous preforms,the lower the porosity of composites.
中图分类号 TB331
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收稿日期 2006/7/21
修改稿日期 2007/11/30
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备注李飞舟(1974-),男 ,陕西眉县人,工程师,硕士.
引用该论文: LI Fei-zhou. Influence of Porous Preforms on Porosity of SiC/Al Composites[J]. Materials for mechancial engineering, 2008, 32(3): 32～34
李飞舟. 多孔预制体对SiC/Al复合材料孔隙率的影响[J]. 机械工程材料, 2008, 32(3): 32～34
被引情况:
【1】林 晶,肖汉宁,高朋召,郭文明, "三维互穿网络结构Al/RSiC复合材料的制备及性能",机械工程材料 40, 38-41(2016)
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参考文献
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【3】Hemambar Ch,Srinivasa Rao B,Jayaram V.Al-SiC electronic packages with controlled thermal expansion coefficient by a new method of pressureless infiltration[J].Materials and Manufacturing Processes,2001,16(6):779-788.
【4】Cui Y.High volume fraction SiCp/Al composites prepared by pressureless melt infiltration:processing,properties and applications[J].Key Engineering Materials,2003,249:45-48.
【5】黄岳山,吴效明.真空浸渗法制备复合材料的渗透动力学特性[J].暨南大学学报,2000,21(1):19-21.
【6】Chong S Y,Atkinson H V,Jones H.Effect of ceramic particle size and alloy conditions on threshold pressure for infiltration of SiC powder compacts by aluminum-based melts[J].Materials Science & Engineering,1993,173(1/2):233-237.
【7】王连星,党桂彬.系列孔径多孔陶瓷的研制[J].功能材料,1997,28(2):186-191.
【8】朱炳琨.无压浸渗法制备SiCp/Al复合材料[J].机械工程材料,1999,23(2):30-33.
【9】胡 锐,李金山,毕晓勤,等.石墨/铜基复合材料真空液相浸渗过程动力学研究[J].西北工业大学学报,2004(3):296-299.
【10】Bear Jacob.多孔介质流体动力学[M].李竟生,陈崇希,译.北京:中国建筑工业出版社,1983:91-128.
【11】盛敬超.工程流体力学[M].北京:机械工业出版社,1988:274-275.
【12】薛定谔.多孔介质中的渗流物理[M].北京:石油工业出版社,1982:45-155.
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