| 常规铸造工艺条件下SiCp/Al-Si复合材料中的界面反应 |
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| 引用本文： | 郭建,王西科,沈宁福.常规铸造工艺条件下SiCp/Al-Si复合材料中的界面反应[J].材料工程,2003(12):18-22. |
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| 作者姓名： | 郭建 王西科 沈宁福 |
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| 作者单位： | 郑州大学工学院材料研究中心,郑州,450002 |
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| 摘 要： | 采用搅拌复合法制备了10%SiC／Al—5Si—Mg，10%SiC／Al—7Si—Mg(体积分数)复合材料，研究了在常规铸造工艺条件下重熔后复合材料中的界面反应。通过透射电镜和能谱分析可知，SiC界面基本上都是单一的SiC／Al及SiC／Si界面，部分界面上有MgAl2O4颗粒相形成，由于基体合金中Si的存在，生成Al2C3的有害界面化学反应得到了抑制。对不同文献中抑制Al4C3产生所需临界Si含量实验测定结果的差异进行了分析。
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| 关 键 词： | SiCp／Al-Si复合材料 界面反应 热胀系数 耐磨性 |
| 文章编号： | 1001-4381(2003)12-0018-05 |
| 修稿时间： | 2003年3月11日 |
The Interfacial Reaction in SiCp/Al-Si Composites under Conventional Casting Condition |
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| GUO Jian,WANG Xi-ke,SHEN Ning-fu.The Interfacial Reaction in SiCp/Al-Si Composites under Conventional Casting Condition[J].Journal of Materials Engineering,2003(12):18-22. |
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| Authors: | GUO Jian WANG Xi-ke SHEN Ning-fu |
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| Abstract: | SiC/Al-5Si-Mg,10% SiC/Al-7Si-Mg (volume fraction) composites were fabricated by stirring cast. By means of TEM and EDS, investigations had been made for the interfacial reaction in re-melt composites under conventional casting condition. The SiC interfaces mainly consisted of SiC/Al interface and SiC/Si interface. With the presence of Mg in the alloy melt, particulates of MgAl_2O_4 were formed on some interfaces. The detrimental interface reactions of forming Al_4C_3 were suppressed because of Si in matrix. Different references gave different critical Si contents that avoid Al_4C_3 forming and the reason was explained. |
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| Keywords: | particulate of SiC Al-Si alloy interfacial reaction composite |
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