| Si3N4/Al-Mg复合材料的无压浸渗制备技术 |
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| 引用本文： | 王守仁,耿浩然,王英姿. Si3N4/Al-Mg复合材料的无压浸渗制备技术[J]. 兵器材料科学与工程, 2006, 29(2): 9-12 |
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| 作者姓名： | 王守仁 耿浩然 王英姿 |
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| 作者单位： | 济南大学,机械工程学院,济南,250022;山东大学,材料与科学工程学院,山东,济南,250014;济南大学,材料工程学院,山东,济南,250022 |
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| 基金项目： | 中国科学院资助项目，济南大学校科研和教改项目 |
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| 摘 要： | 用β-Si3N4纳米颗粒浆料浸渍多孔聚合物材料,通过加热烧蚀掉聚合物,制备出三维空间连续网络结构预制块体,再通过无压浸渗将已熔炼好的铝液浸渗到预制体中,成功制备出陶瓷与金属相互贯穿的Si3N4/Al金属基复合材料。利用座滴定法测试了Al在Si3N4基片上的润湿角,分析了润湿角与浸渗温度的关系。适量镁元素的存在,在Si3N4/Al界面发生微化学放热反应,降低了表面张力,使润湿角大大减小,从而促进了自发浸渗的进行。
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| 关 键 词： | 网络陶瓷 Si3N4/Al金属基复合材料 浸渗 润湿角 |
| 文章编号： | 1004-244X（2006）02-0009-04 |
| 收稿时间： | 2005-05-26 |
| 修稿时间： | 2005-05-262005-08-08 |
Fabrication of Si3N4/Al-Mg metal matrix composites by pressureless infiltration |
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| WANG Shou-ren,GENG Hao-ran,WANG Ying-zi. Fabrication of Si3N4/Al-Mg metal matrix composites by pressureless infiltration[J]. Ordnance Material Science and Engineering, 2006, 29(2): 9-12 |
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| Authors: | WANG Shou-ren GENG Hao-ran WANG Ying-zi |
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| Affiliation: | 1.School of Mechanical Engineering, Jinan University, Jinan 250022, China;2.School of Material Science, Shandong University, Jinan 250014; China;3.School of Material Science, Jinan University, Jinan 250022, China |
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| Abstract: | Porous polymer material was immersed by β-Si3N4 slurry and ablated in oxidizing atmosphere,a three dimensional network preform of porous Si3N4 ceramic was prepared.With Al-Mg molten metal infiltrating into the preform,one Si3N4/Al-Mg interpenetrating phase composite had been fabricated.The wetting angle of Al molten metal and Si3N4 substrate was measured t-hrough sessile drop technique and the relation between wetting angle and infiltration temperature was analyzed.A light chemical reaction in the Si3N4/Al-Mg interface reduced the surface tension and wetting angle,thus successfully promoting the pressurel-ess infiltrating. |
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| Keywords: | reticulated ceramics Si3N4/Al metal matrix composites infiltration wetting angle |
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