| 压铸SiCw/Al复合材料的热物理性能研究 |
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| 引用本文： | 耿林,温丙先.压铸SiCw/Al复合材料的热物理性能研究[J].复合材料学报,1996,13(3):48-52. |
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| 作者姓名： | 耿林 温丙先 |
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| 作者单位： | 哈尔滨工业大学金属材料及热处理教研室 |
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| 基金项目： | 国家“863”高技术课题 |
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| 摘 要： | 本文对用挤压铸造法制备的SiCw/Al复合材料的热膨胀系数和热传导率进行了测试和分析。结果表明;随温度的提高,SiCw/Al复合材料和铝合金的热膨胀系数均明显增加。经人工时效处理的复合材料热膨胀系数比铸态略有降低,而经-196℃深冷处理的复合材料表现出最低的热膨胀系数。另外,随晶须含量的提高,SiCw/Al复合材料的热膨胀系数明显降低,并且热传导率有所下降。
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| 关 键 词： | 晶须 铝 复合材料 热膨胀 热传导 |
| 收稿时间： | 1994-12-30 |
| 修稿时间： | 1995-04-21 |
THERMAL PHYSICAL PROPERTIES OF SQUEEZE CASTING SiCw/Al COMPOSITES |
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| Geng Lin,Wen Bingxian,Yao Chongkai.THERMAL PHYSICAL PROPERTIES OF SQUEEZE CASTING SiCw/Al COMPOSITES[J].Acta Materiae Compositae Sinica,1996,13(3):48-52. |
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| Authors: | Geng Lin Wen Bingxian Yao Chongkai |
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| Affiliation: | Harbin Institute of Technology, Harbin 150001 |
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| Abstract: | Abstract The coefficient of thermal expansion and thermal conductivity of the squeeze casting SiCw/Al composites were measured and analyzed. The experimental results showed that with the increasing temperature, the coefficients of thermal expansion of both SiCw/Al composite and aluminium alloy are increased. The coefficient of thermal expansion of the T 6 state SiCw/Al composite is lower than that of the as-cast composite, and the deep-cooled(-196℃) SiCw/Al composite shows the lowest coefficient of thermal expansion. It is also found that with the increase of the whisker volumefraction, the coefficient of thermal expanlion of the SiCw/Al composite is obviously decreased, and the thermal conductivity of the composite is also decreased. |
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| Keywords: | whisker aluminium composite thermal expansion thermal conduction |
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