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Effect of Mg Content on Properties of SiC/Al Composites Prepared by Pressureless Infiltration
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Qiuyuan LIU1, 2, Feng WANG2, Xiaopan QIU2, Zhiyong HE2, Qifu ZHANG2, Zhipeng XIE1
Journal of the Chinese Ceramic Society | 2020, 48(6) : 818 - 823
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Journal of the Chinese Ceramic Society | 2020, 48(6): 818-823
• Special Topic on Engineering Ceramic Materials •
Effect of Mg Content on Properties of SiC/Al Composites Prepared by Pressureless Infiltration
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Qiuyuan LIU1, 2, Feng WANG2, Xiaopan QIU2, Zhiyong HE2, Qifu ZHANG2, Zhipeng XIE1
Affiliations
  • 1.State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • 2.Central Iron & Steel Research Institute, Beijing 100081, China

    • LIU Qiuyuan (1984-), male, Doctorial candidate. E-mail:

About Author:

LIU Qiuyuan (1984-), male, Doctorial candidate. E-mail:

Published: 2020-06-20 doi: 10.14062/j.issn.0454-5648.20190564
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SiC/Al composites were prepared by a pressureless infiltration process using SiC powder and aluminum alloy (3%Mg (in mass fraction), 5%Mg, 7%Mg, and 10%Mg) as main raw materials. The phase composition, microstructure, mechanical properties and thermal properties of SiC/Al composites were characterized. The effect of Mg content in aluminum alloy on the phase composition, microstructure, mechanical properties and thermal properties of SiC/Al composites was investigated. The results show that Mg can improve the impregnation properties of aluminum alloys and promote the occurrence of interfacial reaction in SiC/Al composites. The main crystalline phases of the prepared SiC/Al composites are both SiC and Al. The presence of Si, Mg2Si and MgAl2O4 phases is also detected. After comparison, the sample with 5% Mg performs the better properties. The optimum performance of the sample prepared with 5%Mg (i.e., flexural strength of (366.36±14.37) MPa, fracture toughness of (9.2±0.27) MPa·m1/2 and thermal conductivity of 178.81 W/(m·K) can be obtained when the porosity is 0.13% and the bulk density is 2.94 g/cm3.

aluminum-based silicon carbide composite  /  pressureless infiltration  /  structure  /  property
刘秋元, 王峰, 邱肖盼, 贺智勇, 张启富, 谢志鹏. 镁含量对无压浸渗SiC/Al复合材料性能的影响. 硅酸盐学报, 2020 , 48 (6) : 818 -823 . DOI: 10.14062/j.issn.0454-5648.20190564
Qiuyuan LIU, Feng WANG, Xiaopan QIU, Zhiyong HE, Qifu ZHANG, Zhipeng XIE. Effect of Mg Content on Properties of SiC/Al Composites Prepared by Pressureless Infiltration[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (6) : 818 -823 . DOI: 10.14062/j.issn.0454-5648.20190564
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Year 2020 volume 48 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.20190564
  • Receive Date：2019-08-13
  • Online Date：2026-10-29
  • Published：2020-06-20
Article Data
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History
  • Received：2019-08-13
  • Revised：2019-08-23
Funding
Affiliations
    1.State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
    2.Central Iron & Steel Research Institute, Beijing 100081, China

Corresponding:

XIE Zhipeng (1957-), male, Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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